Proceedingsof the

MINI! IIIIIIIIMIIIIIIIAIIIIIIIC

InternationalModal

. AnalysisConference

5th InternationalModal Analysis

ConferenceApril 6-9, 1987

Imperial College ofScience & Technology

London, England

DIRECTOR:

Dominick J. DeMichele

UNION COLLEGE

Arnold E.S. Gussin, Dean, Graduate and Continuing StudiesRae D'Amelio, Administrator

Volume I

UNIVERSITATSBIBLIOTHEKHANNOVER

TECHNiSCHEINFORMATIONSB'BLIOTHEK

Sponsored by:Union College

Schenectady, New York 12308

T A B L E O F C O N T E N T S

VOLUME I

GENERAL SESSION PAGE

Keynote Address: "Reflections On Modal Analysis And Its Applications xviiiR. Snoeys, P. Sas

SESSION 1. EXPERIMENTAL CASE HISTORIES I

Assessment And Comparison Of Three Different Experimental Modal Analysis Methods Applied To 1A Wing-Plate Model

W. Q. Feng, P. Q. Zhang, T. C. Huang

Estimation And Analysis Of The Input To A System For The Detection Of Abnormalities In The 9Excitation Signal

P. Davies

Modal Identification Of The Golden Gate Bridge Tower Using Ambient Vibration Data 16Gerard C. Pardoen, James M. White

Practical Sensitivity Analysis 21G. B. Patrick, Y. S. Wei

SESSION 2. ANALYTICAL METHODS I

Statistical Performance Of Modal Parameter Estimation Methods 26Risto Turunen

Hilbert Transform Implications For Modal Analysis 37Ronald Rodeman

Techniques For Implementing Statically Complete Component Mode Synthesis For Forced Response 42James J. Allen

Identification Of Physical Parameters With A Combined Algorithm Of Least Squares Stochastic 49Approximation

Janbao Han, Jingyi Yang

SESSION 3. STRUCTURAL DYNAMICS MODIFICATION I

The Effect Of Experimental Measurement Errors On The Predicted Modal Data Following Hardware 58Modifications

E. J. Williams, M. M. Tayeb

Accuracy Of Structural Modification Techniques 65J. Wang, W. Heylen, P. Sas

The Effect Of Modal Truncation On Modal Modification 72K. B. Elliott, L. D. Mitchell

System Modification Via Identified Dynamic Models 79T. K. Kundra, B. C. Nakra

SESSION 4. LINKING ANALYSIS & TEST I

Vibrations Of Structures Coupled By Nonlinear Transfer Behaviour Of Joints; A Combined 86Computational And Experimental Approach

S. Bohlen, L. Gaul

Interaction Between Flexural And Dilational Waves In A Fluid-Filled Duct With Yielding Walls 92Vincent Martin

Test/Analysis Correlation Of The STS Centaur Using Design Sensitivity And Optimization Methods 99Christopher C. Flanigan

Modal Analysis Of Portal Structure Of Gantry Served For Hydroelectric Station 108Lin-sheng Cai

SESSION 5. PROCESSING MODAL DATA I

Comparative Results From Time Domain And Frequency Domain Modal Parameter Estimation 115Algorithms

David Galyardt, Curtis Quantz

Experimental Modal Analysis For Structural Damage Assessment: The Case Of Natural Convection 122Cooling Towers

Paul Kopff

An Alternative Time Domain Method For Modal Analysis 127Z. Liang, D. J. Inman

A New Curve Fitting Algorithm For Modal Parameter Estimation 133Kwang-Joon Kim, Choong-Gun Sim

SESSION 6. MODAL TEST METHODS I

Distortion Modes Of Dynamically Excited Wind-Tunnel Models Examined Using A Real-Time Moire 140Fringe Technique

C. R. Pyne, W. Drew

Characteristics Of The Modal Test System Used For The ARIANE 4 Structural System Tests 146K. Muhlbauer, D. Jansen, G. Bothe, H. Kaiser, S. Dillinger

Can The Modal Analyst Afford To Be Ignorant Of Nonlinear Vibration Phenomena? 154Lawrence D. Zavodney

Identifying Frequencies And Three-Dimensional Mode Shapes From A Full-Scale Bridge Test 160James A. Richardson, Bruce M. Douglas

SESSION 7. SEISMIC TOPICS

High-Level Vibration Tests Using A 2-Kiloton Eccentric Mass Vibrator 166J. C. Stoessel, R. S. Keowen, P. Ibanez

Distortion Waves In Seismically Excited High-Rise Buildings 172Robert E. McClellan

Development Of Three Dimensional Non-Linear Dynamic Analysis Code For CANDU Fuelling Machine 178A. S. Banwatt, H. A. Wu, C. G. Duff, M. Nagata, K. Horikoshi, Y. Takenaka,H. Murakami, T. Hirai

The Imperial College Shake Table Facility 185J. G. Wardrop, B, Hillary, A. C. Hargreaves

A Review Of Dynamic Soil-Structure Interaction Problems And A Proposed New Hybrid Method 192T. Kundu, R. P. Mathur, C. S. Desai

Combining Composite Damping Material Technology And Modern Vibration Analysis Techniques: 199A Highly Effective Approach For Vibration Insulation of Structures

P. Carels, A. Goossens

SESSION 8. MODAL TECHNIQUES FOR ROTATING MACHINERY I

The Influence Of Torsional-Lateral Coupling On The Modes and Eigenvalues Of Geared Rotor 215Systems

P. Schwibinger, R. Nordmann, G. Grunhage

Modal Response Of A Rotating Bladed Disk Assembly 226Swaminadham Midturi, William A. Stange, John D. Reed

Change Of Crankshafts Balance 234Z. Sibaei, W. Stuhler

Experimental Investigation Of The System Damping Of Rotor-Bearing Systems 240You-yun Zhang, Yong-li Chen, You-bai Xie

Computer Aided Fault Diagnosis Of Crank Systems Using Engine Vibration Data 248

Hsin-Yi Lai

SESSION 9. MODELING STRUCTURES I

Envelope Models For The Characterisation of Coupled Systems 254J. K. Hammond, P. Davies

Modal Analysis Of Polygonal Plates 261Rudolph Heuer, Franz Ziegler

The Identification Of Spatial Parameter Changes Via Modal Analysis 267T. A. Brown

Modeling Of A Flexible Multi-Body System Using Mixed Modal and Tangent Coordinates 274Om Prakash Agrawal, Bipin Chadha

SESSION 10. SUBSTRUCTURING

An Adaptive Method For Large Eigenvalue Problems Using Substructure Synthesis 281Olof Friberg, Lennart Boman

Interface Loading Constraint Method For Dynamic Substructural Analysis Of Shrouded Turbine 288And Compressor Blades

Jin Zhang, Wen-liang Wang, Xiang-jun Chen

Component Information For Damped System Prediction 295K. F. Martin, K. H. Ghlaim

An Improved Component Modal Synthesis Method Using Retransformed Physical Coordinates 300And Its Application To Nonlinear Dynamics

Hiroshi Zui, Etsujiro Imanishi, Yoshlhiro Hamazaki, Takeshi Fujikawa

Reduction Of DOF In Component Mode Synthesis By Using Inter-Force Quasi-Compatability 307Constraint

Qiu Xiangjun

Equivalence Between The Use Of Residual Attachment Modes And The Use Of Attachment Modes 315In Component Mode Synthesis

Qiu Xiangjun

Identification Of A Complete Mobility Matrix Of A Synthesized System From Component 319Mobility Measurements

J. Brassard, M. Massoudiv

SESSION 11. NOISE/ACOUSTIC TOPICS

Optimization Of Internal Combustion Engine Intake And Exhaust Systems For Minimum Sound 324Transmission

John S. Lamancusa, David Heydrick

Evaluation Of Vibration Damping Treatments Using A Vehicle Structural-Acoustic Analysis 330Zafar A. Momin, Donald J. Nefske, Shung H. Sung

Application of Modal Analysis To The Acoustic Modelling Of Vibrating Cylinders 336K. R. Fyfe, F. Ismail

Alternative Methods For Computing Sound Radiation From Vibrating Surfaces 343R. J. Bernhard, B. K. Gardner, D. C. Smith

Modal Analysis As A Tool For Reducing Transmission Case Machining Noise 350Thomas Moore, Zygmunt Reif

Noise Radiation Reduction For High Speed Fully Formed Character Printer Using Dynamic 357Design Analysis Approach

M. Hashimoto, N. Tagawa

SESSION 12. EXPERIMENTAL TECHNIQUES I

An Unbiased Frequency Response Function Estimator 364L. D. Mitchell, R. E. Cobb, J. C. Deel, Y. W. Luk

Modal Parameter Estimation Of A Steel Moment Resisting Frame From Base Excitation 374A. Filiatrault, S. Cherry

Relationships Between Analysis Errors And Complex Mode Shapes 381Gregory W. Hopton, Filip Deblauwe

A New Method For Loss Factor Measurements, Using The Hilbert Transform Implementation 389In A Software To Automatize The "OBERST" Method

Gilles Collot

Multi-Point Transient Modal Testing 394James P. Lauffer, Mark D. Tucker, David 0. Smallwood

Experimental Stress Analysis Under Modal Conditions Using An Infra-Red Technique 399N. Harwood, W. M. Cummings

SESSION 13. VEHICULAR TOPICS

A Methodology For Combining Experimental And Mathematical Modal Analysis With Application 406To An Automotive Component

Patrick Vanhonacker

Analysis Of Interior Noise Induced By Vibrations Of A Car Body 409Youn-Sik Park, Seock Hyun Kim, Jang Moo Lee, Joong Hee Kim

Analysis Of Rider's Response To Road Surface Irregularities 415Guan Fei, Li Wanqiong

The Application Of Electronic Speckle Interferometry In Automotive Product Development 420C. Buckberry, J. C. Davies

SESSION 14. MODELING STRUCTURES II

Nonlinear Resonance Absorption In Vibratory Systems 427J. W. Roberts, J. Z. Zhang

Interaction Of A Compliant Slab With Boundary Layer Flow 435Arturs Kalnins, Cahit A. Evrensel

Modeling Of Large Turbines Mechanical Effects For Real Time Simulation 442A. Lozano, J. A. Romero

A Study On The Frequency-Dependent Lumped Parameter Model 448Tan Shanguang, Tong Zhongfang, Cheng Yaodong, Sun Yueming, Lu Naiyan, Qi Jin

SESSION 15. SPACE STRUCTURES I

Updating System Matrices Using Modal Test Data 453Bernd Caesar

Survey Of Parameter Estimation Methods In Experimental Modal Analysis 460U. Fullekrug

Identification Of A Complex Satellite Model By Means Of Modal Synthesis 468Werner Sachs

Modal Survey Of The Intelsat VI Cradle And Carrier Structure For A Shuttle 478Launched Spacecraft

J. M. O'Keeffe, I. Black, R. Williams, J. K. Bennett, D. Marler

SESSION 16. MACHINERY DIAGNOSTICS

Dynamic Trouble Diagnosis Of Large Load Part 488Qinghong Sun, Xu Chen, Si Zhang

An Anti-Resonance Technique For Detecting Structural Damage 491D. Afolabi

Sensitivity Analysis In Fault Vibration Diagnosis Of Structures 496Weiji Wang, Azhou Zhang

SESSION 17. MODAL TECHNIQUES FOR ROTATING MACHINERY II

Dynamic Characteristic Calculation And Analysis Of Twin-Rotor Engine 502Hong Bao Lin

On The Measurement Of Disk Drive Spindle Non-Repetitive Runouts 509Hatem R. Radwan, Lloyd C. Goss, S. H. Chen

Calculation Of Structural Parameters Related With Repeated Natural Frequencies 517Qiu Xiangjun, Zhu Shijin

SESSION 18. ANALYTICAL METHODS II

Construction of Equivalent Modal Simple Degree Of Freedom Oscillations For The Analysis 524Of Continuous Systems

E. A. Maragakis

Methods Of HOPF And Normal Form In The Analysis Of Non-Linear And Non-Conservative Systems 530Ghazi Majid Arif

An Improved Time Domain Polyreference Method For Modal Identification 536

Lingmi Zhang, Yingxian Yao, Mingfu Lu

SESSION 19. ANALYTICAL METHODS III

Space Station Dynamic Analysis 544Prem B. D'Cruz

Modal Parameter Extraction For Nonproportionally Damped Linear Structures 548Thomas Abrahamsson

A Fourier Transformation Method For Transient Response Of Internally Damped Beams 553H. H. Pan, G. Koenig

Modal Truncation Methods For Problems With Enforced Transient Displacement Inputs 561Robert J. Bernhard, Manfred R. Seidel

Transfer Functions Of Nonlinear Multi-Degree Of Freedom Systems 568Tang Jiashi

Stationary Responses Due To Exponential Cosine Random Excitations 574Tong Fang, Zhen-ni Wang

SESSION 20. NON-LINEAR STRUCTURES I

Continuous Time Estimation Of Lumped Parameter Systems 580M. Yar, J. K. Hammond

Second Order Transfer Function: Computation And Physical Interpretation 587T. Vinh, H. Liu, M. Djouder, T. Chouychai

A Functional Series Approach In The Identification Of Non-Linear Structures 593S. J. Gifford, G. R. Tomlinson

Estimating Higher Order Spectra 601S. A. Billings, K. M. Tsang

Stochastic Modal Interaction In Nonlinear Aeroelastic Structures 608R. A. Ibrahim, Z. Hedayati

Decoupling Condition And Damping Mechanism 620Li-Chung Lin

A Simple Method Of Interpretation For The Modal Analysis Of Nonlinear Systems 626J. He, D. J. Ewins

SESSION 21. LINKING ANALYSIS AND TEST II

System Identification Of A Satellite 635

Tetsuo Furuike, Stepan S. Simonian

Mode-Shape Inference For The Human Heart 643Josue NJock Libii

Modal Testing Theory For Continuous Systems 650

Yuan-Fang Chou

Rigid Body Mass Properties From Test Data 655John Bretl, Paul Conti

vii

Identification Of Material Constants For A Composite Shell Structure 660Thomas G. Carne, David R. Martinez

SESSION 22. PROCESSING MODAL DATA II

A Quantitative Study Using Residual Modes To Improve Dynamic Models 671Brett A. Brinkman

Identification Of Physical Mass, Stiffness And Damping Matrices Using Pseudo-Inverse 679Yiu Wah Luk

Development Of Automatic Modal Analysis 686Kazuki Takahashi, Masao Furusawa

Application of Stationary Sinusoidal Tracing Signal Real Time Processing Method In 693Modal Analysis Of Machine Tools

Zhi-Feng Zhao, Zi-Qiang Jia

Methods Of Processing Strain Response Signals From Rotating Bladed Assemblies To 700Extract Modal Parameters

H. T. Shu, D. G. Cutts

Real-Normalization Of Measured Complex Modes 708

Max L. Wei, Randall J. Allemang, David L. Brown

SESSION 23- MODAL TEST METHODS II

Structural System Tests On ARIANE 4 713K. Muhlbauer

Measuring And Evaluating Nonlinear Dynamic Behaviour Of Mechanical Structures Using 721Sinusoidal Excitation

M. Mertens, H. Van der Auweraer, P. Vanherck, R. Snoeys

Aircraft Ground Vibration Testing At NASA Ames-Dryden 728Michael W. Kehoe

A State-Of-The-Art Implementation Of Multiple Input Sine Excitation 737David L. Hunt, Jeff Mathews, Roger Williams

Modal Identification Of Large Structures From Background Vibrations 743S. Bhan, Z. Wozniak

High-Level Dynamic Testing Of Piping System Components 750John C. Stoessel, K. L. Merz, Mike P. Wade

SESSION 24. MODELING STRUCTURES III

Mass, Stiffness, And Damping Matrix Estimates From Structural Measurements 756Ken Shye, Mark Richardson

Identification Of Complex Structures With Frequency-Dependent Stiffness And Damping 762Zhong Qinghui

The Application Of Modal Analysis In Connection With The Finite Element Method To 766Determine The Dynamic Behaviour Of Machine Tools

F. Erfurt, W. Tietz

Frequency Domain Power Transfer During Impact Testing Of Structures 772Andres Soom, Bor-Jenq Wang

viii

Synchronizing Servo System Move Commands With Out Of Loop Dynamics 779Robert Riemer

Exponent Diagram Analysis Of Feedback Control Systems Including Flexible Structures 785Hubert Hahn

SESSION 25. SPACE STRUCTURES II

Transient Tests For Space Structures Qualification 799L. P.Bugeat, M. R. Razafimaharolahy

Direct Physical Matrix Identification As Compared To Phase Resonance 804804 Testing—An Assessment Based On Practical Applications

Michael Link, Matthias Weiland, Jorge Moreno Barragan

Vibratory Response Of A Stiffened, Floor Equipped, Composite Cylinder 812Ferdinand W. Grosveld, Todd B. Beyer

Modal Effective Parameters And Truncation Effects In Structural Dynamics 820A. Girard, J. F. Imbert

Application Of Tilt Mechanism With Pedestal For Data Reception Near The Local Zenith 827Man Mohan Saxena

SESSION 26. ANALYTICAL METHODS IV

The Polyreference Time Domain Technique 832Filip Deblauwe, Randall J. Allemang, David L. Brown

Modal Properties Of Equipment-Structure Systems By Perturbation Techniques 846Alan G. Hernried

Eigenvalue Sensitivity Derivatives For General Structural Systems 853Walter L. Wolf

Subspace Behaviour In Ibrahim's Time Domain Algorithm 857J. A. Brandon

On Some General Concepts Of Complex Mode Theory 862

De-bao Li

SESSION 27. EXPERIMENTAL CASE HISTORIES II

The Application of Modal Analysis And The Taguchi Method To Reduce Vibration In 868A Forklift Truck

Gregory W. Hopton, Dinesh Seksaria

Modal Test Of A Nuclear Steam Isolation Valve 875Shayan Pazargadi

Elimination Of Tool Chatter In A Boring Operation 879Z. Reif, M. Lai, M. Nardone

Resonant Vibration Of A Print Actuator Base Plate On A High Speed Line Printer 883Paul Shuo Hung Chang, Han-Chung Wang

Anatomy of the Collapse of the Hartford Coliseum Roof 889A. John Macchi

In Extensional Modes of Circular Cylinder 896

Y. G. Tsuei, C. L. Shen, J. Liu jx

SESSION 28. DESIGN METHODS I

Structural Control And Optimization Of Structures With Constraints In Dynamics 903H. J. Baier

Modal Control Of Structures Using Reduced Model 909Chang Jin, Gu Yi

Modal Analysis Technique For Design Improvements Of Machine Tools 914K. H. Chua, M. Rahman, M. A. Mansur, W. D. Ambrose

Modal Analysis Application To The Design Of A Fixture For Vibration Test 920Paolo G. Chiarlone, Silvio Berghenti, Emilio Gravano

SESSION 29. STRUCTURAL DYNAMICS MODIFICATION II

Structural Modification And Sensitivity Through A Multi-Point Constraint Formulation 928John Crowley, Havard Void

Servo Sensitivity—Extended Structural Sensitivity Analysis For An Electro-Mechanical 934Control System

Nobuyuki Okubo, Hiroshi Yamamoto

The Equivalent Mass And Equivalent Stiffness Of a Structure 939Hailin Hu, T. C. Huang

Structural Dynamics Modification Using Transfer Functions Part I Theories 944Zhu Jingshuo, Qi Jin, Tong Zongfang, Cheng Yaodong, Sun Yueming, Lu Naiyan

Expansion Of Rotational Degrees Of Freedom For Structural Dynamic Modifications 950Peter Avitabile, John C. O'Callahan, Chaur-Ming Chou, Venkatesh Kalkunte

Structural Modification Utilizing Beam Elements 956K. B. Elliott, L. D. Mitchell

SESSION 30. PROCESSING MODAL DATA III

Application And Evaluation Of Multiple Input Modal Parameter Estimation 966F. Lembregts, R. Snoeys, J. Leuridan

Integrated Stepped Sine Modal Analysis 979F. Lembregts, P. Sas, H. Van der Auweraer, J. Leuridan

Multiple Input Orthogonal Polynomial Parameter Estimation 986J. Leuridan, H. Van der Auweraer

The Use Of Modal Participation Factors To Determine Physical Poles 995J. Lipkens, J. Leuridan

Advances In Modal Identification—From SISI, SIMO To MIMO 1003Llngmi Zhang, Yingxian Yao

On The Transform Of The Complex Mode Into The Real Mode 1008Zhang Jinghui, Wang Wei

SESSION 31. DAMPING

The Effect of Damping On The In-Phase and Out-Of-Phase Components Of Harmonic Response 1015In Damped Structures

H. Nevzat Ozguvenx

Proportional Damping Approximations For Systems With Repeated Roots 1022Rajendra Singh, Satish S. Nair

Optimal Damper Design For A Heavily Damped System 1027Rufen Chu, Lin Lo, Chang-Ming Chen

Forced Vibration Of Sandwich Beam With Segmented Elastic-Viscoelastic Layers 1033Xi Dechang, Ying Zuguang

A New Design Method Based On Modal Damping Ratio Matrix Of MDOF System 1041B. L. Jiang

Dynamic Analysis Of Liquid Damper In Response To White Noise Excitation And 1047Solution Of The Motion

Guosheng Cheng

On The Effectiveness Of Damping Treatment And The Evaluation Criteria By Means 1054Of Modal Analysis

Li Debao, Gan Qiang, Sun Jiaqi

SESSION 32. SPACE STRUCTURES III'

An Equivalent Continuum Modal Analysis Procedure For Space Station Lattice Structures 1060John 0. Dow, Stephen A. Huyer

State-Space Formulation Of Multi-Shaker Modal Analysis 1069Roy R. Craig, Jr., Hyoung M. Kim, Andrew J. Kurdila

Effect Of Air Mass On Modal Tests 1078John Fowler, Norman Lagerquist, Howard Leve

Modal Survey Testing Of The Combined Release And Radiation Effects Satellite— 1084A Shuttle Payload

Antonie Stroeve

Large Truss Structures 1091M. Sierra, M. Fuentes

Space Station Dynamic Analysis Methods 1098Mary Baker, Paul Blelloch

SESSION 33. SHIP RELATED TOPICS

Modal Analysis Of Foremast On U.S. Naval Cruiser 1106Dennis Pierce, Rick Thorene, Mike Yargus

Modal Analysis Of A Mast Antenna Model 1113C. W. S. To

Modal Tests Under Different Boundary Conditions For A Polymer Concrete Machinery 1122Foundation

Paul Geissler

Dynamic Analysis And Modeling Of The Blades Of A Wind Energy Converter 1129Julio M. Montalvao e Silva, Mario M. R. Fernandes

SESSION 34. MODAL TEST METHODS III

Structural Modification And Coupling Dynamic Analysis Using Measured FRF Data 1136M. Imregun, D. A. Robb, D. J. Ewins

Electrodynamic Interaction Between A Resonating Structure And An Exciter 1142Dantam K. Rao

Experimental Results On Driven-Base Modal Parameter Estimation 1151Y. Soucy, F. R. Vigneron, T. Steele

An Eigensystem Realization Algorithm Using Data Correlations (ERA/DC) For Modal 1158Parameter Identification

Jer-Nan Juang, J. E. Cooper, J. R. Wright

Comparison Of Single Point And Polyreference Modal Testing On The Combined Release 1164And Radiation Effects Satellite

Nelson W. Smith

Modal Analysis With AR (ARMA) Model And Unknown Excitation 1171D. Shi, W. Stuhler

SESSION 35. LINKING ANALYSIS AND TEST III

Review Of Model Optimization Techniques 1177W. Heylen, P. Sas

A Complete Procedure For The Adjustment Of A Mathematical Model From The Identified 1183Complex Modes

Q. Zhang, G. Lallement, R. Fillod, J. Piranda

Modal Comparison Criteria 1191N. G. Humbad, S. Mallick

An Experimental Mode Synthesis Technique 1198Gu Song-Nian, You Wen-Jie, Jiang Jie-Sheng

Instrumenting A 900 MW Turbogenerator For Torsional Modal Tests 1207G. Coetzee, D. C. Levy

Comparison Of Theoretical And Experimental Modal Analysis Results Of A Rectangular 1214Three Dimensional Frame

R. Samuel, R. K. Ramanathan, S. Shankarnarayanan, K. H. Navalgund

SESSION 36. TRANSDUCERS AND INSTRUMENTATION TOPICS

The Evolution Of Modal Analysis Systems 1219Andrew J. Bates

Investigation Of Characteristics Of The Hammer Tip And The Force Impulse Signal 1224Wu Peijiang, Cheng Yaodong, Sun Yuemlng, Tong Zhongfang

Six Axis Dynamic Calibration Of Accelerometers 1230Anthony J. Severyn, Ray Zimmerman, Richard W. Lally, David L. Brown

Light-Weight Transducer Development Using Piezoelectric Polymer 1238Horn-Sen Tzou

A Multiple Input Multiple Output Signal Analysing System 1245A. H. Verbruggen

Trends In Accelerometer Calibration 1250Torben R. Licht, Henrik Andersen

SESSION 37. FINITE ELEMENT ANALYSIS I

Case Study Of Vibratory Stress Relief In High-Pressure Tubes 1256T. Janter, P. Sas, D. Vandepitte

The Missing Links—Advances In Graphic Processing Of Finite Element Modelling Information 1263Gerard A. Brennan

New Concepts For Finite Element Mass Matrix Formulations 1269C. Stavrinidis, J. Clinckemaillie, Dr. J. Dubois

A Big Height Fill Calculation By The Finite Element Method 1278Chokote Tchouateng, Kamga Fomo

Finite Element Modeling And Drop Resonance Spectroscopy Analysis Of A Printer Hammer 1290Sherman S. Wang, S. H. Chang, L. Crawforth, S. Y. Lee, A. C. Munce

Identification Of Modal Parameters By Using The Finite Dynamic Element For GFRP Structure 1297Zhu Kun-Quan, Huang Shui-Ping, Chen Shi-Lin

SESSION 38. ANALYTICAL METHODS V

Modal Analysis Of Double Modes: A First Approach To "Intelligent" Curve-Fitting 1302N. M. M. Maia, D. J. Ewins

Modal Identities For General Structural Systems 1309G. M. T. D'Eleuterio

The Large-Change Sensitivity Analysis And Modification Of The Dynamic Behavior Of 1317Mechanical Structures

Huang Shi-Lin, Tian Ji-Fang

Reflector Antenna Assessed For Low Orbitting Satellite Data Reception 1325Man Mohan Saxena

Non Orthogonality Arising From Repeated Roots 1331K. F. Martin, K. H. Ghlaim

SESSION 39. MODAL ANALYSIS SOFTWARE I

Structure Monitoring Using A Diagnosis Technique Based On Combined Use of FEA And Test 1338U. Vandeurzen, J. Leuridan, Y. Doucet

A New Method Of Identification Of System Parameters 1347S. K. Bhave, B. N. Murthy

Direct Parameter Identification From Frequency Response Measurements 1352Douglas K. Gustaveson

Modal Analysis For Engineers As Well As Academics 1357R. W. Hutton, R. C. Sohaney

The Application Of Modal Analysis On Package Design 1363Zushun Han, Xiaoyan Zhu, Panjun Wang

SESSION 40. MODAL TEST METHODS IV

A Desktop Computer Based Analysis System For Dynamic Testing 1367Joseph M. Keller, Mark A. Clifton, Douglas S. Hanna

Operational Deflection Shapes: Background, Measurement And Applications 1372Ole Dossing, Curtis H. Staker

Experimental Modal Analysis Of Machine Tool Structure With Rotating Spindle Under 1379Random Excitation

Liao Baiyu, Li Gongyu

Modal Analysis of Simulated Device of Excavator 1388Cai Lin-sheng, Li De-bao

Impact Testing Of Non-Linear Structures 1394T. Chouychai, T. Vinh

Research On Time Domain Identification Of Dynamic Parameters And Application To 1400Dynamic Analysis Of Composite Laminates

Shu-lian Chen, Zhi-feng Zen

SESSION 41. EXPERIMENTAL TECHNIQUES II

Modal Testing Using Multiple References 1407Chuck VanKarsen, Ken Shye, Mark Richardson

Influence Of Fluid-Structure Interaction On The Modal Parameters Of Thin Beams Of 1417Various Geometries

G. Nick Weisensel

A Technique For Nonintrusive Modal Analysis Of Ultralightweight Structures 1425Mark E. Patton, Martin W. Trethewey

Vibrational Kinematic Parameter Estimation For Robotic Manipulators 1432James R. Bosnik, H. J. Sommer III

A Computer Aided Design Program For The Tuning Of Ultrasonic Machining Tools Using 1438The Finite Element Methods

G. Coffignal, M. Touratier, M. Frainais

Dynamic Testing Techniques For Controlled Excitation Of Scaled Rotors 1445G. Alvin Pierce

SESSION 42. NON-LINEAR STRUCTURES II

Identification And Quantification Of System Non-linearity Through Response Data 1452Hsin-Yi Lai, Su-Hua Hsieh

The Use Of Envelope And Instantaneous Phase Methods For The Response Of Oscillatory 1460Nonlinear Systems To Transients

P. Davies, J. K. Hammond

Identification Of Nonlinearities In Vibrating Systems Using Optimal Control Techniques 1467J. K. Hammond, H. R. Lo, J. Seager-Smith

Stable Design Of Asymmetric Non-Linear Vibration Absorbers 1474Dr. H. J. Rice

A Simple Theoretical And Experimental Study Of The Force Characteristics From 1479Electrodynamic Exciters On Linear And Non-Linear Systems

G. R. Tomlinson xiv

Threshold Modal Analysis Of Nonlinear Oscillatory Systems 1487

Su-Hua Hsieh, Hsin-Yi Lai

SESSION 43. FINITE ELEMENT ANALYSIS II

Modal Analysis Of 1372-MM Diameter Sleeve Value At Sugar Pine Dam 1495Robert V. Todd, Brent Mefford

Natural Frequency And Modal Behaviour Of Free-Free Axisymmetric Shells 1501G. R. Heppler

Application Of Galerkin Method To Coupled Thermoelastic Problems 1508M. Reza Eslami, A. Salehzadeh-Nowbari

The Finite Dynamic Element Of The Timoshenko Beam And Its Error Bound Analysis 1511Chen Xianjun, Zhao Lingcheng, Chen Jingyu

Computer Animation Of Finite Element Model Vibrations 1515Robert R. Lipman

Finite Element Modeling Techniques for The Simulation Of Automotive Powertrain Dynamics 1520S. C. Jasuja, V. J. Borowski, D. H. Anderson

SESSION 44. STRUCTURAL DYNAMICS MODIFICATION III

Modal Scaling Considerations For Structural Modification Application 1531Max L. Wei, Randall J. Allemang, David L. Brown

Consistent Scaling Of Rigid Body Using Experimental Flexural Modes 1538John C. O'Callahan, Chaur-Ming Chou, Peter Avitabile, Chi-Hsing Wu

Modal Analysis And Finite Element Analysis Of A Piano Soundboard 1545Joseph Kindel, I-Chih Wang

On Structural Modifications In Truncated System 1550S. Braun, Y. M. Ram

Beam Modifications Of Structural Systems Utilizing The Receptance Approach With 1557Static Flexibility

R. R. Lin, A. B. Palazzolo, R. M. Alexander, C. H. Gerhold

Frequency Optimization of Repetitive Lattice Beam-Like Structures Using A Continuum Model 1565Robert Reiss, K. Jayaraman

Structural Dynamics Modification Using Transfer Functions Part 2 Applications 1573

Zhu Jingshuo, Qi Jin, Tong Zongfang, Cheng Yaodong, Sun Yueming, Lu Naiyan

SESSION 45. DESIGN METHODS II

Machining Chatter Identification And On-Line Monitoring 1578Hsin-Yi Lai, Su-Hua Hsieh

Threshold Adaptive Modeling For Drilling Dynamics Characterization And Process Monitoring 1586Su-Hua Hsieh, Hsin-Yi Lai

Real Vs Complex Normal Mode Shapes 1594J. Kirshenboim

On The Modelling Method Of "Modal-Physical Model" Of Systems 1600Zhang Si, Cao Suyun

Optimal Lumped Modification Of Continuous Vibrating Structures 1606Aldo Sestieri, Walter D'Ambrogio, Enrico De Bernardis

Strain And Stress Fields On Shells Of Complicated Shape And Boundary Conditions; 1613Static And Dynamic

L. Ferrer, A. Dorantes, G. Uribe

The Impulse Response Function Method Of Modal Parameter Identification 1619Liao Baiyu, Zheng Wanping

SESSION 46. MODAL ANALYSIS SOFTWARE II

Multiple Workstation Modal Testing In A 32-Bit, Distributed Processing Environment 1625Win. L. Townsend, Yiu Wah Luk, J. C. Deel

Polyreference Modal Parameter Estimation From FRFs With Variable Frequency Spacing 1630Havard Void, John Crowley

An Up-To-Date Approach To Complex Modulus Testing 1633R. G. Smiley, M. L. Drake, D. M. Hopkins

Parameter Estimation By Transform Equation Error Identification 1639David A. Wallace, Mark S. Darlow, Warren R. DeVries

Identification Of Multiple-Input Modal Parameters From Multiple-Frequency Response Function 1645Fan Zijie, Liu Ruiyan

SESSION 47. LINKING ANALYSIS AND TEST IV

Correlation Of Analysis And Test In Modeling Of Structures—Assessment And Review 1651Samir R. Ibrahim, Amr A». Saafan

A New On Line Identification Method For Modal Parameters MCAR Method 1661Dongsen Luo, Weian Xu

Spatial Distribution Of Model Error Based On Analytical/Experimental Frequency Discrepancies 1665G. Dudley Shepard

Dynamic Strain Analysis Of A Substructure By Use Of The Experimental Modal Analysis And 1669The Finite Element Method

Nobuyuki Okubo, Soichiro Tanabe, Toru Hirano

Optimization Of Finite Element Modeling Using Experimental Modal Analysis And Sensitivity 1674Analysis

K. Yokoki, S. Hayakawa, H. Yoshino

Identification of Differences Between Finite Element Analysis and Experimental Vibration Data 1681'Charles Lawrence

ADDENDUM TO TABLE OF CONTENTS

Train-Bridge Time-Varying System Mode Synthesis Technique 1692Yang Yi, Q. Y. Zheng

Three-Dimensional Polar Tetrahedral Finite Stress Elements With Regular And Irregular 1699Joint Freedoms, And Applications To Systems Having Contact Surfaces

Cemil Bagci, Shankar Venkataraman

Critical Speed And Modal Analyses Of Rotating Machinery Using Spatial Finite-Line Element 1708Method

Cemil Bagci, Siva K. Rajavenkateswaran

Dynamic Response Of Mechanical Structures 1718Belingardi Giovani, Rossetto Massimo

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