scholarly journals Numerical simulation analysis of the in-cavity residual stress distribution of lignocellulosic (wood) polymer composites used in shallow thin-walled parts formed by the injection moulding process

2014 ◽  
Vol 55 ◽  
pp. 381-386 ◽  
Author(s):  
M.D. Azaman ◽  
S.M. Sapuan ◽  
S. Sulaiman ◽  
E.S. Zainudin ◽  
A. Khalina
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Stress Distribution ◽  
Simulation Analysis ◽  
Residual Stress Distribution ◽  
Moulding Process ◽  
Wood Polymer ◽  
Injection Moulding Process ◽  
Wood Polymer Composites ◽  
Thin Walled

scholarly journals Numerical Simulation on Moulded Thin-Walled Parts via Injection Moulding Process

2014 ◽  
Vol 575 ◽  
pp. 73-77
Author(s):  
M.D. Azaman ◽  
S.M. Sapuan ◽  
Shamsuddin Sulaiman ◽  
E.S. Zainudin ◽  
Abdan Khalina
Keyword(s):  
Numerical Simulation ◽  
Shear Stress ◽  
Residual Stresses ◽  
Current Trend ◽  
Light Weight ◽  
Moulding Process ◽  
Injection Moulding Process ◽  
Low Shear Stress ◽  
Thin Walled ◽  
Low Shear

The current trend in the industry is to produce thin, light weight, and environmental products. In this project, flat or shallow thin-walled parts were designed and moulded lignocellulosic polymer composites (PP + 50 wt% wood) to visualize the processability via moulding simulation. This studied focused on the filling, shear stress at wall, and in-cavity residual stresses behaviors. The shallow thin-walled part is preferable in moulding PP + 50 wt% wood due to economically in processing, low shear stress distribution and low residual stresses than the flat thin-walled part.

Stress Intensity Factors due to Residual Stresses in Thin-Walled Girth-Welded Pipes

1981 ◽  
Vol 103 (1) ◽  
pp. 66-75 ◽  
Author(s):  
E. F. Rybicki ◽  
R. B. Stonesifer ◽  
R. J. Olson
Keyword(s):  
Residual Stress ◽  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Stress Distribution ◽  
Intensity Factor ◽  
Crack Growth ◽  
Residual Stress Distribution ◽  
Intensity Factors ◽  
Thin Walled Pipe ◽  
Thin Walled

The effect of a girth-weld-induced residual stress field on the linear elastic fracture mechanics of a thin-walled pipe is examined. The procedure for using the residual stress distribution to compute KI and KII for a circumferential crack which is growing radially is described. In addition to the two-pass girth weld, stress intensity factors are computed for a residual stress distribution in a flat plate and for a hypothetical residual stress state in a second thin-walled pipe. The computed stress intensity factor for the flat plate geometry and its residual stress distribution are compared with a solution from the literature as a check on the computational procedure. The through-the-thickness residual stress distribution due to the two-pass girth weld is similar to a half-cosine wave. For purposes of comparison, the hypothetical through-the-thickness distribution selected for the second pipe is similar to a full cosine wave. The stress intensity factor is presented as a function of crack depth for a crack initiating on the inner surface of the pipe. The redistribution of residual stresses due to crack growth is also shown for selected crack lengths. The study shows that residual stress-induced crack growth in pipes can be significantly different from that in flat plates due to the possibility of locked-in residual bending moments in the pipe. These locked-in moments can have effects similar to externally applied loads and can either promote or restrain crack growth. A residual stress distribution is illustrated in which crack growth, if initiated, would continue through the entire wall. Also, a residual stress distribution is illustrated for which the crack could arrest after a certain amount of growth.

Research on the Residual Stress of Aluminum Alloy (LF6) Welding

2013 ◽  
Vol 546 ◽  
pp. 127-131
Author(s):  
Zhi Qing Guo ◽  
Qiu Juan Lv ◽  
Yan Jiao Li ◽  
Chang Jiang Liu ◽  
Fang Xie
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Experimental Study ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Welding Residual Stress ◽  
Welding Seam ◽  
Maximum Value

This paper use the software ANSYS to study the aluminum alloy (LF6) welding residual stress by numerical simulation and experimental study. The result indicates that the aluminum alloy (LF6) has the same residual stress distribution with others, there is a maximum value existing at the range of 4-5mm near the welding seam.

scholarly journals Numerical Simulation of Cut Surface Shape and Residual Stress Distribution in Shearing Process

2019 ◽  
Vol 60 (9) ◽  
pp. 1996-2002
Author(s):  
Masaru Fukumura ◽  
Yoshiaki Zaizen ◽  
Takeshi Omura ◽  
Kunihiro Senda ◽  
Yoshihiko Oda
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Surface Shape ◽  
Cut Surface

scholarly journals Numerical Simulation of Cut Surface Shape and Residual Stress Distribution in Shearing Process

2018 ◽  
Vol 59 (688) ◽  
pp. 65-70
Author(s):  
Masaru FUKUMURA ◽  
Yoshiaki ZAIZEN ◽  
Takeshi OMURA ◽  
Kunihiro SENDA ◽  
Yoshihiko ODA
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Surface Shape ◽  
Cut Surface
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