Web-Based Materials Property Database/media/Files/Autosteel/Great...zA Materials Property Database...
Transcript of Web-Based Materials Property Database/media/Files/Autosteel/Great...zA Materials Property Database...
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Web-Based Materials Property Database
Presentation for “Great Designs in Steel”February 18, 2004By Dale C. Wetzel
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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.
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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
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Background – Who will use it and why?
CAE for accurate design simulationMaterials engineers for quality propertiesProduct development engineers for material choice
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Background – Who’s Database Shell?
We chose MSC Software (Mvision)Compatibility
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Background - What Material Properties are Needed?
This Depends Very Much on the User!Generally Properties of the Categories:- Monotonic Properties- Cyclic Properties- Characteristic Properties
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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
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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
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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
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Fatigue Life Prediction Models
Component load-life modelNominal stress-life modelLocal strain-life model
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Local Strain-Life Method
Produce Strain – Controlled Fatigue DataProduce Material Strain/Life CurveExtract Data for Models and Computations
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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
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Details of the Database
Screen Shots to Show Methodology
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Select Database
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Search for a Material
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Search for Material
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Display of Material Search
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Search for Property Desired
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Display of Search
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Chemical Composition
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Monotonic Properties
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Stress / Strain Curve
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Cyclic Properties
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Stress Amplitude vs Strain Amplitude
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Stress Amp. Vs. Plastic Strain Amp.
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Stress Amp. Vs. Fatigue Life Reversals
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Elastic Strain Amp. Vs. Fatigue Life Reversals
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Plastic Strain Amp. Vs. Fatigue Life Reversals
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Total Strain Amp. Vs. Fatigue Life Reversals
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Material Microstructure
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Criteria Search
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Select Options
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Options
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Specific Results
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Advanced Search
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Search Results
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Deeper Search
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Results of Added Criteria
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Cyclic Comparison of Two Materials
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Comparison Continued
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Comparison of Two Material Curves
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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!
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Materials Property Database Wrap-up
Thank You!Any Questions?
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Sponsored by: American Iron and Steel Institute