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Constitutive modelling of abdominal organs
1Department of Mechanical and Materials Engineering, The University of Western Australia, Nedlands/Perth, Australia. kmiller@mech.uwa.edu.au
Journal of Biomechanics
|February 15, 2000
Summary
This study developed 3D viscoelastic models for liver and kidney tissue to simulate abdominal organ deformation during impacts. These models improve understanding of tissue mechanics for trauma and surgical applications.
Area of Science:
- Biomechanics
- Biomaterials Science
- Computational Mechanics
Background:
- Abdominal organs are vulnerable to impact trauma, necessitating accurate deformation simulations.
- Understanding the stress-strain relationship and strain rate dependency of these tissues is crucial for protective measures.
Purpose of the Study:
- To develop three-dimensional, non-linear, viscoelastic constitutive models for liver and kidney tissues.
- To provide a simulation tool for abdominal organ deformation under impact conditions.
Main Methods:
- Utilized in vivo experimental data from the University of Michigan.
- Constructed non-linear, viscoelastic constitutive models.
- Validated models for compressive strains up to 35% and strain rates of 0.2-22.5 s⁻¹.
Main Results:
- Presented validated 3D constitutive models for liver and kidney tissue.
- Demonstrated model accuracy for specific strain and strain rate ranges relevant to impact trauma.
Conclusions:
- The developed models offer a significant step towards accurate simulation of abdominal organ deformation.
- These models have potential applications in virtual reality surgical simulations and non-rigid image registration.