Simulation of Residual Stress and Distortion on Additively Manufactured SS316L Specimens Using Inherent Strain Method

2021 ◽  
pp. 657-668
Author(s):  
Thoufeili Taufek ◽  
Syidatul Akma Sulaiman ◽  
Y. H. P. Manurung ◽  
Mohd Shahriman Adenan ◽  
Siti Nursyahirah Ahmad
Keyword(s):  
Residual Stress ◽  
Inherent Strain ◽  
Inherent Strain Method ◽  
Strain Method

Research on Deformation Prediction Method of Laser Melting Deposited Large-Sized Parts Based on Inherent Strain Method

2021 ◽  
Vol 871 ◽  
pp. 65-72
Author(s):  
Cheng Hong Duan ◽  
Xian Kun Cao ◽  
Ming Huang Zhao ◽  
Xiang Peng Luo
Keyword(s):  
Residual Stress ◽  
Laser Energy ◽  
Layer By Layer ◽  
Laser Melting ◽  
Forming Process ◽  
Deformation Prediction ◽  
Metal Parts ◽  
Inherent Strain ◽  
Inherent Strain Method ◽  
Strain Method

In the process of metal parts fabricated by Laser Melting Deposition (LMD), a high temperature gradient will generate due to the instantaneous high laser energy input, which will cause residual stress in the formed part of metal parts, the residual stress will result in defects like warping deformation or even cracking. In this paper, a finite element method based on inherent strain method is proposed to predict the deformation of metal parts fabricated by LMD. Firstly, combing with the birth and death element technology, a local model is established to simulate the layer-by-layer deposition in the LMD forming process, and the values of inherent strain is obtained. Secondly, the obtained inherent strain values is applied to large-sized part layer by layer, and the final deformation of large-sized part is calculated. Based on the proposed method, the efficiency of deformation prediction of large-sized metal parts fabricated by LMD could be effectively improved.

New Method for Estimating Residual Stresses in Pipe Made by Surfacing Weld

1995 ◽  
Vol 117 (3) ◽  
pp. 365-371 ◽  
Author(s):  
T. Terasaki ◽  
T. Akiyama ◽  
T. Ishimura
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
New Method ◽  
Composite Pipe ◽  
Inherent Strain ◽  
Inherent Strain Method ◽  
Strain Method

A new method is presented for estimating residual stresses produced in a pipe made by surfacing weld. By focusing on the concept and the feature of inherent strain causing the residual stress, the proposed method has both the convenience of the Sachs method and the accuracy of the inherent strain method. The experiment for residual stress of a steel with brass cladding was done by both the Sachs and proposed method. The equation of the Sachs method for composite pipe was derived. The equation for the new method was obtained on the basis of the theory of inherent strain. It is found that the proposed method is useful for estimating residual stresses of pipe with cladding.

scholarly journals Effect of Layer Removal Methods on Residual Stress Estimated by Inherent Strain Method.

1996 ◽  
Vol 14 (4) ◽  
pp. 762-767 ◽  
Author(s):  
Jun Chen ◽  
Toshio Terasaki ◽  
Tetsuya Akiyama ◽  
Katsuhiko Kishitake
Keyword(s):  
Residual Stress ◽  
Layer Removal ◽  
Inherent Strain ◽  
Inherent Strain Method ◽  
Strain Method
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