Overview on constitutive modeling for hydroforming with the existence of through-thickness normal stress |
| |
Authors: | Feifei Zhang Jun Chen Jieshi Chen Jian Lu Gang Liu Shijian Yuan |
| |
Affiliation: | 1. Department of Plasticity Technology, Shanghai Jiao Tong University, Shanghai 200030, China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
| |
Abstract: | The hydroforming process is used widely across many industrial fields. High applied pressure during hydroforming makes it necessary to consider the influence of the through-thickness normal stress, while traditional approaches based upon a plane-stress assumption are not appropriate in such cases. Reliable constitutive models that consider the through-thickness normal stress are summarized in this paper, which focuses on the state of the art in the following several aspects: determine the flow stress curve with proper experimental methods and choose the measurement and computational methods to minimize the error as much as possible; select the proper three-dimensional anisotropic yield criterion for the specific material; Define the forming limit model and construct corresponding experimental verification method. The review of existing work has revealed several gaps in current knowledge of the hydroforming process accounting for the through-thickness normal stress. Conclusions are drawn concerning some critical issues and potential future developments in hydroforming modeling. |
| |
Keywords: | Hydroforming Through-thickness normal stress Flow stress model Yield criterion Forming limit model |
本文献已被 ScienceDirect 等数据库收录! |