Application for managing model-based material properties for simulation-based engineering
Inventors
Assignees
National Technology and Engineering Solutions of Sandia LLC • Sandia National Laboratories
Publication Number
US-7499841-B2
Publication Date
2009-03-03
Expiration Date
2024-07-08
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Abstract
An application for generating a property set associated with a constitutive model of a material includes a first program module adapted to receive test data associated with the material and to extract loading conditions from the test data. A material model driver is adapted to receive the loading conditions and a property set and operable in response to the loading conditions and the property set to generate a model response for the material. A numerical optimization module is adapted to receive the test data and the model response and operable in response to the test data and the model response to generate the property set.
Core Innovation
The invention is a software application designed for generating a property set associated with a constitutive model of a material used in simulation-based engineering. It comprises program modules including a first module that receives test data and extracts loading conditions, a material model driver that receives loading conditions and property sets to generate model responses, and a numerical optimization module that compares test data with model response to iteratively generate optimized property sets.
The application addresses the need for efficient management and preservation of materials information such as constitutive models, model parameters, materials characterization test data, and parameter estimation workflows that are crucial in simulation-based design. It provides a unified platform with a library of models, test templates, and data processing workflows to ensure traceability, automate parameter estimation, and support exploratory development of new material models.
Claims Coverage
The patent contains several independent claims that define the inventive features of the application for managing and generating model parameters associated with materials and their constitutive models.
Integration of test data reception and loading condition extraction
A program module operable to receive test data related to a material and extract the corresponding loading conditions from that data.
Material model driver generating model response
A material model driver configured to receive loading conditions and a property set, and operable to generate a model response of the material based on these inputs.
Numerical optimization module generating optimized property set
A numerical optimization module that receives test data and the generated model response, and iteratively varies the property set until the model response matches the test data to generate an optimized property set.
Graphical comparison module for visualization
A graphical comparison module that receives both model response and test data to display them graphically for user comparison of model accuracy.
Automatic generation of formatted analysis code input
An input deck module that receives the optimized property set and generates formatted analysis code input compatible with simulation codes for execution and visualization.
Extensible model library using templates
An extensible library of model templates defining constitutive models with associated property sets, enabling addition of new models without recompilation.
Test library with templates defining materials characterization tests
A test library comprising templates that define valid materials characterization tests and their parameters to validate input data suitable for parameter estimation and modeling.
Collectively, these inventive features establish an integrated software framework that automates the generation, validation, optimization, visualization, and deployment of material constitutive model parameters, supporting comprehensive simulation-based engineering workflows with extensibility and data traceability.
Stated Advantages
Preservation of materials information and original design intent to support lifecycle and redesign activities.
Provision of a single point of access for validated constitutive models, model parameters, and materials characterization test data ensuring traceability and confidence.
Automation and fault tolerance of parameter estimation using numerical optimization algorithms to match model responses to test data efficiently.
Graphical comparison capabilities allowing designers to visually assess model response accuracy against test data over specific problem spaces.
Automatic generation of input decks formatted for various simulation codes, facilitating seamless integration into simulation workflows.
Extensibility enabling incorporation of new material models and tests without recompilation, supporting exploratory development.
Documented Applications
Simulation-based engineering for design and analysis of components and systems in industries such as automotive, aerospace, and microelectronics.
Storage, retrieval, and management of materials characterization data and constitutive model property sets for use in physical modeling and simulation code input generation.
Supporting parameter estimation processes for generating accurate model parameters from materials characterization tests.
Capturing and preserving design intent and materials selections to aid redesign and failure investigations throughout a product’s lifecycle.
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