Material model library

Material Model Library Skill

Purpose

The Material Model Library Skill provides validated constitutive models and material properties for biological tissues and implant materials, supporting accurate biomechanical simulations and device design.

Capabilities

• Tissue material property database (bone, cartilage, soft tissue)
• Hyperelastic model parameter sets (Mooney-Rivlin, Ogden)
• Viscoelastic and poroelastic models
• Implant material database (Ti-6Al-4V, CoCrMo, PEEK)
• Degradation model parameters
• Temperature and rate-dependent properties
• Anisotropic material definitions
• Age and disease-state variations
• Material property uncertainty quantification
• Literature reference compilation
• Custom material fitting tools

Usage Guidelines

When to Use

• Assigning material properties for FEA
• Selecting materials for device design
• Validating simulation models
• Conducting parametric studies

Prerequisites

• Analysis type defined
• Loading conditions characterized
• Relevant tissue/material types identified
• Accuracy requirements established

Best Practices

• Verify material sources and validation status
• Consider patient-specific variations
• Account for rate-dependency when relevant
• Document material model assumptions

Process Integration

This skill integrates with the following processes:

• Finite Element Analysis for Medical Devices
• Biomaterial Selection and Characterization
• Orthopedic Implant Biomechanical Testing
• Scaffold Fabrication and Characterization

Dependencies

• Material property databases
• Literature compilations
• Experimental characterization data
• FEA software material libraries
• Material testing standards

Configuration

material-model-library:
  tissue-types:
    - cortical-bone
    - cancellous-bone
    - cartilage
    - tendon
    - ligament
    - muscle
    - skin
    - vascular
  implant-materials:
    - Ti-6Al-4V
    - CoCrMo
    - PEEK
    - UHMWPE
    - stainless-steel
  model-types:
    - linear-elastic
    - hyperelastic
    - viscoelastic
    - poroelastic

Output Artifacts

• Material property datasets
• Constitutive model parameters
• Material cards for FEA software
• Property validation reports
• Literature reference lists
• Uncertainty quantification data
• Material selection recommendations
• Model fitting results

Quality Criteria

• Material properties from validated sources
• Model parameters appropriate for loading conditions
• Uncertainty properly characterized
• References properly documented
• Models validated against experimental data
• Assumptions clearly stated