Elasto-plastic Analysis of Finite Deformation using Natural Strain

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Other Title
  • 自然歪を用いた有限変形の弾塑性解析に関する研究
  • (Effect of Pre-deformation history of Pulsating Shear for two cycles on Anisotropy of Yield Surface)
  • （２サイクルの片振り剪断の予変形の履歴が降伏曲面の異方性に与える影響について）

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<p>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.</p>

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