Study on local cyclic plastic behavior of 3D printed titanium alloy notched parts
LIU Huan
XU Yingdong
LI Jian
ZHAO Xun
LIU Depu
WANG Zhiqiang
ZHOU Yingchao
FANG Lijia
CHEN Pei
LIU Qing
SHEN Chengjun
Abstract：The main purpose was to study the local cyclic plastic behavior of 3D printed titanium alloy notched parts.Firstly,the local stress and strain field near the 3D printed titanium alloy notch was analyzed in detail by finite element method,and the evolution of stress and strain field was deeply investigated.Then,the experimental study was carried out and the influence of the forming direction on the results was analyzed.The results show that ratcheting deformation occurs at the notch root,with the maximum ratcheting strain rate in the L3 direction and the minimum ratcheting strain rate in the L1 direction.The influence of the forming direction on the stress triaxiality is not too obvious.The elastic strain energy of different forming directions is almost no difference.However,the forming direction has a great influence on the plastic strain energy.With the increase of the number of cycles,the difference of plastic strain energy results for different notch radii also becomes larger.
Keywords：NotchRatcheting deformationStress triaxialityStrain energy3D printingForming direction
Publication Date：2025-06-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：11( 141-151 )