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A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
Published on: May 18, 2015
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Validation of rib structural responses under dynamic loadings using different material properties: A finite element
1Laboratoire Interdisciplinaire Carnot de Bourgogne, site UTBM, UMR CNRS 6303/Univ. Bourgogne Franche-Comte, Belfort, France.
Medical Engineering & Physics
|July 5, 2022
Summary
This study validated human rib finite element models for high-velocity impact simulations. Compressive material properties provided better correlation with experimental data than tensile properties, enhancing fracture prediction accuracy.
Area of Science:
- Biomechanics
- Computational mechanics
- Orthopedic research
Background:
- Finite element (FE) models are crucial for understanding human rib biomechanics.
- Accurate material properties are essential for reliable FE simulations of rib fractures.
Purpose of the Study:
- To create and validate human rib FE models for dynamic anterior-posterior bending simulations.
- To investigate the influence of various material properties on rib structural responses and fracture prediction.
Main Methods:
- Developed and validated human rib FE models against experimental data.
- Applied human and porcine rib cortical bone material properties under different loading modes, strain rates, and ages.
- Compared numerical results (force-displacement, strain, rotation, fracture location) with experimental findings.
Main Results:
- FE models demonstrated robustness, accurately predicting rib structural responses and fracture locations.
- Human rib compressive material properties showed better correlation with experimental strain and rotation data than tensile properties.
- Rib structural responses were sensitive to material properties related to loading mode, strain rate, and age.
Conclusions:
- Human rib FE models are reliable for simulating high-velocity impacts.
- Compressive material properties are more suitable than tensile properties for accurate rib fracture simulation.
- Porcine rib material properties can yield comparable results to human properties in FE models.
- FE model development necessitates careful consideration of material property variations across loading modes, strain rates, and age.
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