| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Descriptions of Several Cyclic Plasticity Phenomena Based on Y-U Model: Elastic-plastic Transition, Closure of Stress-strain Loop and Ratcheting |
| Author(s) |
Fusahito Yoshida |
| On-Site Speaker (Planned) |
Fusahito Yoshida |
| Abstract Scope |
For numerical simulation of springback, an accurate description of stress-strain response in the elastic-plastic transition region, specifically unloading process, is of vital importance. This paper describes its constitutive modeling based on the Yoshida-Uemori (Y-U) kinematic hardening law, along with the description of nonlinear unloading-reloading stress-strain behavior. For modeling of nonlinear unloading, it is treated as the nonlinear elasticity, which is directly associated with the plastic-strain dependent chord modulus. Cyclic plasticity modeling for the subsequent small-scale plastic region is discussed. Furthermore, the descriptions of closure of a cyclic stress-strain hysteresis loop and ratcheting are presented. For the above modeling, no additional material parameters are needed. The model was validated by comparing the numerical simulation of stress-strain responses with the corresponding experimental observations in advanced high-strength steel sheets. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |