Development of the multi-axial stress test machine and verification of crystal plasticity model

2011 Fiscal Year Final Research Report

• Project/Area Number: 22760092
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Production engineering/Processing studies
• Research Institution: Yamagata University
• Principal Investigator: YOSHIDA Kengo 山形大学, 大学院・理工学研究科, 助教 (70436236)
• Project Period (FY): 2010 – 2011
• Keywords: 多軸応力状態 / 降伏曲面 / 塑性構成則 / 材料試験

Research Abstract

A multi-axial stress testing machine for thin-walled tubular specimens has been developed in the present study. The test machine is capable of applying axial force, internal pressure and torque to a thin-walled tubular specimen. Using the testing apparatus developed in this study, the plastic deformation behavior under tri-axial stress state can be observed. This experimental evidence observed by this machine would provide meaningful information for validating the constitutive models for metals.