A Study of Cyclic Ratchetting Behavior Based on the Distributed Element Model

• Main Authors: Jing-Shian Tsai, 蔡敬賢
• Other Authors: Dar-Yun Chiang
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/qa96rq

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 90 === The Distributed Element Model (DEM) Combining with the A-F non-linear kinematic hardening rule is capable of adequately describing the behavior of cyclic ratcheting of materials. However, it still has the disadvantage of not being able to describe appropriately the long-term behavior of cyclic ratcheting. The objective of this study is to improve the modeling capability of the modified DEM for cyclic ratcheting behavior of long-term . To account for this behavior, we modify the A-F non-linear kinematic hardening rule for long-term behavior of cyclic ratcheting according to experimental observations. In this study, we simulate the behavior of cyclic ratcheting of 1070 steel. According to the simulations, DEM Combining with the modified A-F non-linear kinematic hardening rule is capable of adequately describing the behavior of cyclic uniaxial ratcheting of 1070 steel.