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Summary

The LMS Virtual.LabTM Motion Desktop provides the multi-body pre- / post-processing capabilities necessary to simu-late any mechanical or mechatronic sys-tem. Through its link with CAD capabili-ties, its extensive parameterization and automation capabilities, and the multi-disciplinary LMS Virtual.Lab environment, it provides a unique environment to effi-ciently optimize a complete mechatronic system for its functional performances (kinematic and dynamic behaviour, fa-tigue life, acoustics, noise and vibration). The LMS Virtual.Lab Motion Desktop allows creating a multibody dynamic model, applying constraints and loads coming from any source (e.g. experimen-tally measured loads) and animate, plot and compare the simulation results.

For the solver features, look at the ‘VL.MOT.33.2 LMS Virtual.Lab Motion Solver’ Product Information Sheet, which elaborates on basic solver and recursive, corner, interactive solvers, plus design sensitivity analysis, user-defined subrou-tine, coupled and co –simulations, etc. Capabilities

Model creation

Geometry creation

• Wireframe, surface, or solid features

for each body

• Sketcher available to create detailed

part geometry

• Photo-realistic material library

Answers for industry

LMS Virtual.Lab

Motion Desktop [VL-MOT.80.1] – 13.1

www.siemens.com/plm/lms

Benefits

• Gain insight in the kinemat-ic and dynamic perfor-mance of a mechanism

• Increase product quality by efficient full system optimi-zation

• Enables hybrid engineering through easy access and usage of experimental data in the multi-body simula-tion

• Software architecture is very open to CAD, other CAE solvers

• Gain productivity through unique auto-mation and parameteri-zation capabilities

Features

• Multi-disciplinary environ-ment:

• Automatic transfer of calculated loads to LMS Virtual.Lab Durability

• Conversion of multi-body model to FE-assembly, e.g. for noise & vibration study

• Modular modeling ap-proach (submechanisms)

• Dress up features like chamfers, screw

threads…

• Patterns, mirroring, scaling

• Realistic surface modelling Geometry import

• Import many other popular CAD for-

mats (see Product Configuration Sheet) Bodies

• Mass and inertia properties automati-

cally calculated from solid geometry or

defined by user

• Automatic creation of complete set of

bodies from a CATIA product

• Easily apply initial conditions to any

body (absolute or relative)

• Import of ADAMS .adm files

Mechanism Assembly

• Automatic assembly of bodies by creat-ing kinematic joint constraints

• Easy creation, edition and visualization of axis systems during the creation of joints, constraints and forces

• Ability to check mechanism assembly by exercising bodies according to joints, without the need to run the solver.

• Changes made to parts are reflected automatically in the multi-body model

• Support of CATIA publications allowing to replace CAD components without ‘braking’ the multi-body model.

• Conversion of multi-body model to NVM model (FE-assembly)

Modular modelling approach

• Sub-mechanisms can be defined and treated as a distinct entities

• Model can contain any number of submechanisms.

• Motion Publications can be used to define bodies (rigid or flexible) or mo-tion axis systems which are common between different submechanisms.

• Open several panels at one time allows viewing existence and parameters of other elements

Joints

• Joint types include:

• standard joints: revolute, cylindri-cal, bracket, spherical, translation-al, screw, gear, planar, CV, univer-sal

• Compound joints: spherical-spherical, revolute-revolute, revo-lute-cylindrical, revolute-spherical, revolute-translational.

• Curve and surface joints: point-curve, point-surface, slide-curve, roll-curve

• Joints will snap bodies together

Constraint Elements

• Standard constraint types include: difference, distance, point, position, orientation, dot1, dot2.

• Time-varying constraints (at position, velocity and acceleration levels): joint, relative, one-body, two-body

• Two-body, three-body and four-body relative constraint

• Both discontinuous and continuous speed-sweep constraint for run-up analysis.

Force Elements

• Standard force elements: Spring – damper (translational, rotational), beam, three-point force, friction, shock absorber, expression force, user-defined force.

• Spline beam for largely deforming structures like an anti-roll bar. The Mul-ti-beam representation of a body, is au-tomatically setup trough the support of CATIA beam meshes. The body is sub-structured and post-process is available on each element.

Features continued

• Efficient post-processing

• Easy debugging and com-parison of models through ASCII report of mechanism

• Easy navigation through and edition of the model via the feature browser

• Upgrade of models display-ing actions taken, and sta-tus (successful, warning)

• Streamline corporate know-how and standards through built-in knowledge based engineering


• Bushing forces: including stiffness, damping, pre-load and frequency de-pendence for standard bushing (6 dof), radial bushing and spherical bushing. Bushing link, hydrodynamic bushing also are available.

• Bump stop contact force element de-fined using similar definition as a bush-ing.

• Tires: TNO Delft-Tyre (MF-TIRE and MF-SWIFT), simple tire, LMS CDTire, Stand-ard Tire Interface.

• Contact force types: point-to-point, sphere-to-extruded-surface, sphere-to-revolved-surface, extruded-to-revolved-surface, revolved-to-revolved, sphere-to-rail, sphere-to-ground

• CAD contact based on tessellation of the surface (RAPID search engine) is much faster than before to setup and to run. Tesselation controlled by sag, length and angle.

• Flexible contact (rigid-to-flex or flex-to-flex),

• Gear contact (Cai/ISO formulations)

• Aero- and hydrodynamic local forces (no pressure)

Mathematical Expressions

• Useful for drivers, force elements, geometries.

• Simplified formulation by predefined variables.

Sensors

• Force sensors sum the force and torque quantities at a specific location for reporting

• Kinematic sensors report position, velocity and acceleration for a point of interest.

User-defined Subroutines

• Allows to customize all common ele-ments of the mult-body model, such as forces, drivers, control elements

• User-defined routines are written in Fortran (contact your local support or see on-line help for more details on versions and compilers supported)

Curves

• Easier spline curve editing for driver- or force elements.

• Import of ASCII or MS Excel files

• Explicit or implicit curve definition. Parametrization/Automation

• All model parameters can be parame-terized

• For ease-of-use, all parameters can be grouped in MS Excel or ASCII files

• Automatic synchronization between parameters and changes to MS Excel or ASCII files.

• Visual Basic macro recording and reply to automate all user interactions

• Mathematical formulas for or between parameters

• Built-in knowledgeware: corporate know-how can be embedded through formulas, rules and checks.

• Management of multiple design vari-ants in one simulation model

• Analysis cases associative with CATIA V5 Knowledgeware design tables

• Feature browser allows fast visualiza-tion and edition of any Motion ele-ment.

Inserting external data for force/constraint elements

• Different possibilities exist to import

data that can be used to define the

motion of the mechanism (e.g. as force

versus time or as driving function)

Curves

• See above


Time Series elements

• Time data in following file formats can

directly be imported/exported and plot-

ted: MTS RPCIII, nCode DAC, Universal

Binary, EDAS, FAMOS) Load Function Set

• Loads can be read through a time-

history load function set, allowing to

read an extensive range of time data

formats: LMS Test.Lab files, LMS Mo-

tion Results files, Generic Time History

files (supporting same file formats as

the Time Series elements, see above),

MS Excel files

LMS Imagine.Lab Amesim Interface

• The tight integration of the LMS Amesim software allows you to pa-rameterize, solve and post-process the LMS Amesim model directly from LMS Virtual.Lab Motion.

• Coupled simulation and co-simulation schemes are available to get faster re-sults no matter the specificity of the model.

• LMS Amesim includes more than 3300 models from 29 libraries in the areas of Hydraulic & Pneumatic, Thermal, Ener-gy, Mechanical, Engine, Electrome-chanical, Control, etc.

• This solution allows correctly simulat-ing the complete mechatronics system to result in more accurate and more robust designs.

• Enables fully coupled non-linear me-chanical system dynamics by combin-ing 1D and 3D representations of the model components

• 3D models provide the description of the multibody model as well as values of position, velocity and acceleration of the bodies.

• 1D models provide the description of the actuators and controllers as well as values of output pressures and forces.

• Results for both Imagine.Lab and Vir-tual.Lab are created during the coupled simulation.

• A different reporting time step can be defined for LMS Amesim and LMS Vir-tual.Lab Motion.

• LMS Virtual.Lab can act as the master program to solve the full combined set of differential equations or both LMS Virtual.Lab Motion and LMS Amesim can solve their own equations allowing to fasten the computation time

• Seamless and easy integration of Amesim and Motion models

• Easy switch between coupled and co-simulation schemes

• LMS Amesim physical and text parame-ters can be driven from Motion and be part of a Design Table.

• LMS Amesim variables can be defined for post-process and optimization in LMS Virtual.Lab

• Basic input and output control ele-ments required for interfacing both models are included in this product.

• Initial conditions are applied to the state variables after a stabilization run performed on the 1D and 3D models separately or on the combined model.

• Discontinuities detection in the con-trols or hydraulic state equations and automatically restart of the integration process.

• LMS Amesim solver supported with Linux

Running Motion Solution

• Different possibilities exist for a user to

setup, manage and execute motion

simulations


Design Tables

• Allows the user to organize specific parameters in an excel spreadsheet for increase usability and parameter man-agement.

Configurations

• Configurations extend the use of the design table into creating a specific set of parameters and associating those to an Analysis Case.

Solutions Manager

• Greater solution capability by taking

further advantage of:

• Design Tables

• Configurations

• Multiple Analysis Cases

• Multi-node Batch Solver

• Multi-core workstations and lap-

tops

• Runs users choice of configurations for

any Analyses Cases

• Automated Post processing including

Load Envelopes, Comparison Plots and

more

• Can automatically run scripts to

change attributes not covered by De-

sign Tables

• Supports batch solving

Reported Results

• Gives the user further control to what

data is reported to the motion results

file. Variables of interest can be select-

ed instead of reporting all quantities

• Manages LMS Virtual.Lab Motion re-

sults file size.

Visualization of Results

Animation

• Trace bodies on the screen

• Synchronized graph cursor with anima-

tion for better engineering insight

• Create envelope of body motion

• Show geometry collision detection and

intersection curve between penetrat-

ing bodies (+ separate report) both for

rigid and flexible bodies.

• Spring deformation visualization

• Show result vectors

• Scaled (amplified) motion

• Rotate, pan, and zoom while animating

• Direct .avi creation

• Take any camera stand point

• Simultaneous animation of multiple

views

• Deformation of flexible bodies within

the complete mechanism

• Stress and displacement contours of

flexible bodies

• Manage lighting, views, and part col-

ours and textures

Graphing

• View available results in tree format

• Directly plot from Motion feature tree

• Graph from a results file without load-

ing the model

• Graph results in global or local refer-

ence frame

• Save template plots for multiple re-use

and plot instantiations

• Curve export to ASCII or MS Excel for-

mat

• Plot definitions save with model

• Mathematical operations on results

such as scaling, multiplying curves, dif-

ferentiating, integrating, taking FFT,

• Display FFT results in amplitude/phase

(Bode plot)

• Display 3D waterfall line diagram al-

lowing to project on single rpm or sin-

gle frequency space

• Display any 3D spline surface or road

data in a 3D display

• Easy torsional vibration check between

two selected sensor axis systems

• Polar plots, orbit plots

• Change line types, color, appearance


• Display results in any unit

• Display X and Y cursors

• Multiple plot formats

• Legend

• Unit conversion on image

Supported hardware platforms

• Windows: 1 GB of RAM is the minimum

recommended amount of memory for

all applications

• UNIX: 512 MB of RAM is the minimum

recommended amount of memory for

all applications. 1 GB of RAM is rec-

ommended when large meshes (500

000 elements and more) are used

• Windows 2000 (min SP4)/ Windows XP

Professional SP1 or SP2/Windows XP

x64 Professional

• IBM Workstation with AIX 5.2 or 5.3

• HP Workstation with HP-UX Version HP-

UX 11.11

• SGI Workstation with IRIX 6.5.15m

• Sun Workstation Solaris 8

For details on specific configurations

(workstation, processor and clock speed,

graphics adapters), required service packs

and patches, contact your local Siemens

PLM Software office


Contact

Siemens PLM Software

Americas +1 248 952-5664

Europe +32 16 384 200

Asia-Pacific +852 2230 3308


© 2014 Siemens Product Lifecycle

Management Software Inc. Siemens and the

Siemens logo are registered trademarks of

Siemens AG. LMS, LMS Imagine.Lab, LMS

Imagine.Lab Amesim, LMS Virtual.Lab, LMS

Samtech, LMS Samtech Caesam, LMS Samtech

Samcef, LMS Test.Lab, LMS Soundbrush, LMS

Smart, and LMS SCADAS are trademarks or

registered trademarks of Siemens Industry

Software NV or any of its affiliates. All other

trademarks, registered trademarks or service

marks belong to their respective holders.

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