Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
This paper describes the anisotropy for the shape of yield surface generated under a large deformation on the basis of the Natural Strain theory. In the previous report, using the test specimens made of tough pitch copper, the yield stresses which is obtained by applying the pre-deformation of simple shear with alternative one cycle load have been investigated. In the present study, the yield stresses are investigated by using test specimens which are already applied the large simple shear with pulsating loads for two cycles so as to the total plastic strain in this study becomes the same as previous study for alternative one cycle loads. Then, the anisotropy of the shape of yield surface formed during cycle shear is revealed by investigating the yield stress with various sizes of reverse shear.
