web-based materials property database/media/files/autosteel/great...za materials property database...
TRANSCRIPT
w w w . a u t o s t e e l . o r g
Web-Based Materials Property Database
Presentation for “Great Designs in Steel”February 18, 2004By Dale C. Wetzel
w w w . a u t o s t e e l . o r g
Presentation Overview
Why did we wish to build a Materials Property Database (MPD)?Who will use it and why?What Material Properties are Needed and Why?Details of the Database and rational reasons for the methodology.
w w w . a u t o s t e e l . o r g
Background – Why did we wish to build a MPD?
Enabler to the Chrysler Development System (CDS)- Provide innovation - Improve quality- Cut redesigns (time) - Cut costsWill be a foundation for one global location for materials property data- Within: DCAH, DCS, Freightliner, etc.- Also partners: MMC, HyundaiFoundation for material commonization- Purchasing power thru bulk lower costs
w w w . a u t o s t e e l . o r g
Background – Who will use it and why?
CAE for accurate design simulationMaterials engineers for quality propertiesProduct development engineers for material choice
w w w . a u t o s t e e l . o r g
Background – Who’s Database Shell?
We chose MSC Software (Mvision)Compatibility
w w w . a u t o s t e e l . o r g
Background - What Material Properties are Needed?
This Depends Very Much on the User!Generally Properties of the Categories:- Monotonic Properties- Cyclic Properties- Characteristic Properties
w w w . a u t o s t e e l . o r g
Background - What Material Properties are Neded? CAE might desire:
Monotonic Properties- Data from Engineering Stress / Strain Curve- Data from True Stress / Strain CurveCyclic Properties- Data from Cyclic Stress / Strain Curve- Data from Strain / Life Curve
w w w . a u t o s t e e l . o r g
Background - What Material Properties are Needed? Materials Engineer might desire:
Monotonic Properties- Numeric Property Values (UTS, YS, E, etc.)Cyclic Properties- Fatigue Life or LimitMicrostructureChemical Composition
w w w . a u t o s t e e l . o r g
Background – Why are these Material Properties Needed?
Monotonic Properties- Design to an ultimate and yield strength- A small number of failures are do to overloadsCyclic Properties- Design for fatigue resistance- 90% of mechanical failures are attributed to fatigue
w w w . a u t o s t e e l . o r g
Fatigue Life Prediction Models
Component load-life modelNominal stress-life modelLocal strain-life model
w w w . a u t o s t e e l . o r g
Local Strain-Life Method
Produce Strain – Controlled Fatigue DataProduce Material Strain/Life CurveExtract Data for Models and Computations
Vinay Kumar – TCC/CAE, Girish Kulkarni - SVPT/CAE, John Hirshey - TCC/CAE, Sudheendra Rao, Fred Zweng – PVPT/CAE04/03/2003
DCAH CAE ProcessDCAH CAE Process
Supplier FE models
CATIA
Archive data
Parametric Geometry & welds (KBE)
P/T & Chassis “Chunky”
Components -3D Modeling
BIW Meshingand Assembly
Closures modeling and
assembly
Quality gates (Milestone Data)
Solvers/OptimizationNASTRANDYNAABAQUSFE-Fatigue, etc.
Component & Subsystem libraries•Road load data•Modal components (tires, etc.)•Bushing data•Stamping data•Crash dummy models•DMIG components, etc.
Targets & Testdata
DESKTOP (LMS)• Trimmed BIW assembly• Full vehicle assembly• Loads/BC’s• Post process• Optimization
Geometry/ConnectionAssociativity
MVISION
Connections (ABF)
ENVIRONMENTMVISION
w w w . a u t o s t e e l . o r g
Details of the Database
Screen Shots to Show Methodology
w w w . a u t o s t e e l . o r g
Select Database
w w w . a u t o s t e e l . o r g
Search for a Material
w w w . a u t o s t e e l . o r g
Search for Material
w w w . a u t o s t e e l . o r g
Display of Material Search
w w w . a u t o s t e e l . o r g
Search for Property Desired
w w w . a u t o s t e e l . o r g
Display of Search
w w w . a u t o s t e e l . o r g
Chemical Composition
w w w . a u t o s t e e l . o r g
Monotonic Properties
w w w . a u t o s t e e l . o r g
Stress / Strain Curve
w w w . a u t o s t e e l . o r g
Cyclic Properties
w w w . a u t o s t e e l . o r g
Stress Amplitude vs Strain Amplitude
w w w . a u t o s t e e l . o r g
Stress Amp. Vs. Plastic Strain Amp.
w w w . a u t o s t e e l . o r g
Stress Amp. Vs. Fatigue Life Reversals
w w w . a u t o s t e e l . o r g
Elastic Strain Amp. Vs. Fatigue Life Reversals
w w w . a u t o s t e e l . o r g
Plastic Strain Amp. Vs. Fatigue Life Reversals
w w w . a u t o s t e e l . o r g
Total Strain Amp. Vs. Fatigue Life Reversals
w w w . a u t o s t e e l . o r g
Material Microstructure
w w w . a u t o s t e e l . o r g
Criteria Search
w w w . a u t o s t e e l . o r g
Select Options
w w w . a u t o s t e e l . o r g
Options
w w w . a u t o s t e e l . o r g
Specific Results
w w w . a u t o s t e e l . o r g
Advanced Search
w w w . a u t o s t e e l . o r g
Search Results
w w w . a u t o s t e e l . o r g
Deeper Search
w w w . a u t o s t e e l . o r g
Results of Added Criteria
w w w . a u t o s t e e l . o r g
Cyclic Comparison of Two Materials
w w w . a u t o s t e e l . o r g
Comparison Continued
w w w . a u t o s t e e l . o r g
Comparison of Two Material Curves
w w w . a u t o s t e e l . o r g
Conclusions
A Materials Property Database is an important enabler to the design process.A web based Materials Property Database is one central location to house accepted quality data. A Materials Property Database is a tool to help cut costs!
w w w . a u t o s t e e l . o r g
Materials Property Database Wrap-up
Thank You!Any Questions?
w w w . a u t o s t e e l . o r g
w w w . a u t o s t e e l . o r g
Sponsored by: American Iron and Steel Institute