Active Research

IMMC Material Characterization

At present, high-rate material properties and the associated constitutive equations are not available for many low impedance (soft) materials. In particular, the mechanical properties of biological tissues and polymers are not well understood at high rates of strain. This fundamental knowledge is necessary for the development of numerical and physical models to assess the performance of soft materials subject to high rate deformation.


Challenge

Materials such as foams, elastomers and rigid polymers are commonly used in energy absorbing (impact) applications. The development of advanced human body models for virtual evaluation and design of safety systems requires dynamic properties for biomaterials.
One of the most important challenges in advanced modeling today is the characterization of mechanical properties and implementation in a numerical environment.

High Deformation
Rate Characterization

Low impedance materials exhibit a high degree of rate sensitivity. We are often interested in high deformation rates and large deformations. These materials are dispersive and have low impedance, which is important when considering wave effects.

Constitutive
Modeling

Advanced constitutive modeling considers material nonlinearity, hyperelasticity, viscoelasticity and damage.

CAE
Implementation

CAE Implementation and model verification and validation (V&V) form the foundation for advanced predictive modeling.

High Deformation Rate Tensile Test

Experiment and Simulation to Investigate CSF Cavitation

University of Waterloo

University of Waterloo

 

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Affiliations

IRCOBI

 

WatCAR

 

CBB

 

CAMJ

 

Get in Touch:


Prof. Duane Cronin

PhD, PEng


Canada Research Chair: Trauma Biomechanics and Injury Prevention (tBIP)

CRC Information: http://www.chairs.gc.ca/

 

Director: Impact Mechanics and Material Characterization Lab

IMMC