Influence of the Residual Stress on Mechanical Properties of Ductile Materials by Simulating Small Punch Test
This paper describes an approach to identify the influence of mechanical properties of the materials under the condition of containing residual stress. The numerical method of simulating small punch test (SPT) is used to determine the material response under loading. The simulated material behavior of the specimen is based on the ductile elastoplastic damage theory of Gurson, Tvergaard and Needleman (GTN). The residual stress can be prefabricated on the specimen by loading and unloading. By comparing the original specimen with the specimen contains residual stress, the change of the mechanical properties of the materials can be studied. The results of simulation indicate that the material properties decrease with the increase of the residual stress.
Shan-Tung Tu and Zhengdong Wang
H. H. Wang et al., "Influence of the Residual Stress on Mechanical Properties of Ductile Materials by Simulating Small Punch Test", Applied Mechanics and Materials, Vol. 750, pp. 285-291, 2015