Validation of the material point method and plasticity with Taylor impact tests

Details Validation of the material point method and plasticity with Taylor impact tests Validation of the material point method and plasticity with Taylor impact tests

2012-01-12

arxiv.org/abs/1201.2476v1

Physics

Computational Physics

21 pages, 12 figures, 2004

Scientific paper

Taylor impacts tests were originally devised to determine the dynamic yield strength of materials at moderate strain rates. More recently, such tests have been used extensively to validate numerical codes for the simulation of plastic deformation. In this work, we use the material point method to simulate a number of Taylor impact tests to compare different Johnson-Cook, Mechanical Threshold Stress, and Steinberg-Guinan-Cochran plasticity models and the vob Mises and Gurson-Tvergaard-Needleman yield conditions. In addition to room temperature Taylor tests, high temperature tests have been performed and compared with experimental data.

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