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Development of Microscopic Damage Model for Impact Failure Simulation of Polymeric Components

Article of Honda R&D Technical Review Vol.19 No.1

Summary

For simulating the final failure of the component made by polymeric materials based on the microscopic material properties, the craze density-based softening law was proposed phenomelogically. The microscopic experiment was conducted while the craze nucleation, growth and fibril failure were simulated with the coarse grained molecular dynamics model. The impact failure test was also conducted on the actual automotive part. The deceleration time history and damage zone development were compared with those obtained by the finite element (FE) analysis. As a result, the usefulness of the constitutive equations with microscopic material properties was validated.

Reference

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Author (organization or company)

Hiroyuki MAE(Automobile R&D Center)、Kikuo KISHIMOTO(Tokyo Institute of Technology)

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