Transformation, microcrack,and thermal residual stress as interactive processes in ZrO2-Toughened Al2O3, Simulated by the finite element method

1994 ◽  
Vol 25 (8) ◽  
pp. 1725-1731 ◽  
Author(s):  
Li Zhonghua ◽  
Zhao Yong ◽  
S. Schmauder
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Thermal Residual Stress ◽  
The Finite Element Method ◽  
Element Method

Prediction of Tablet Characteristics from Residual Stress Distribution Estimated by the Finite Element Method

2013 ◽  
Vol 102 (10) ◽  
pp. 3678-3686 ◽  
Author(s):  
Yoshihiro Hayashi ◽  
Takahiro Miura ◽  
Takuya Shimada ◽  
Yoshinori Onuki ◽  
Yasuko Obata ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
The Finite Element Method ◽  
Element Method

Temperature Field and Thermal Residual Stress of Grinding GH4169 with Conventional Aluminum Oxide Wheel

2013 ◽  
Vol 589-590 ◽  
pp. 238-244
Author(s):  
Tao Wang ◽  
Guo Ding Chen
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Temperature Field ◽  
Aluminum Oxide ◽  
Thermal Residual Stress ◽  
Grinding Temperature ◽  
Grinding Parameters ◽  
Grinding Temperature Field ◽  
Element Method

The constitutive relationship of GH4169 superalloy was investigated. The grinding thermal load acting on GH4169 workpiece in grinding process with conventional aluminum oxide wheel was determined by using the method combining finite element method (FEM) with experiment. The grinding temperature field and grinding thermal residual stress generated in GH4169 were calculated via finite element method (FEM). Finally, the relation between grinding parameters and grinding temperature field and that between grinding parameters and thermal residual stress were discussed.

Prediction of Residual Stresses in Butt Welded Plates Using Inherent Strains

1993 ◽  
Vol 115 (4) ◽  
pp. 417-423 ◽  
Author(s):  
Y. Ueda ◽  
M. G. Yuan
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Residual Stresses ◽  
The Finite Element Method ◽  
Butt Weld ◽  
Butt Welds ◽  
Plastic Analysis ◽  
Inherent Strain ◽  
Element Method

The source of residual stresses in the vicinity of a weld may be expressed in terms of inherent strains. The characteristics of the inherent strain distributions in butt welds are investigated. It is found that the patterns vary little with changes in the welding conditions and sizes of the welded plates. With some assumptions, simple formulas are derived for the distribution and magnitude of inherent strain in a butt weld. A method of predicting the residual stress in a butt-welded plate using the characteristics of inherent strain distributions is presented. The validity of the method is confirmed by thermal elasto-plastic analysis using the finite element method (FEM).

scholarly journals Modeling and Calculating of Residual Stress and Strain of Butt Welded Joint

2021 ◽  
Vol 31 (5) ◽  
pp. 58-67
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Residual Stresses ◽  
Welded Joint ◽  
The Finite Element Method ◽  
Force Method ◽  
Stress Components ◽  
Residual Stresses And Strains ◽  
Element Method

The non-uniform thermal expansion and contraction resulting from welding processes cause residual stresses and strains. Experimental studies on measuring welding residual stresses and strains of structure are costly and sometimes they are not possible. Previously, analytical methods with idealized models were developed to determine the welding residual stresses and strain. Recently, numerical methods are constructed to analyze the stresses and the strains in welded structures. This paper presents the calculation results of residual stress and welding strain in butt welded joint of S355J2G3 carbon steel of 5 mm thickness made by MAG welding process with a single pass. The calculation is performed by two methods: the imaginary force method and the finite element method. In the finite element method, the SYSWELD software is used to simulate and to determine residual stresses and strain of this welded joint. The results of finite element method are compared with those of imaginary force method to show the rationality and the advantages of finite element method. The study results have shown that in this welded joint, only the longitudinal and transverse stress components are important and the other stress components are negligible.

Testing and Analysis of the Inner Stress in Adhesive Coating Layer Using Strain Gauges and Finite Element Method

2005 ◽  
Vol 490-491 ◽  
pp. 667-671 ◽  
Author(s):  
Xiao Ling Zheng ◽  
Min You ◽  
Yong Zheng ◽  
Hai Zhou Yu ◽  
Chun Mei Yang
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Adhesive Layer ◽  
Epoxy Adhesive ◽  
Strain Gauges ◽  
The Finite Element Method ◽  
Curing Procedure ◽  
Adhesive Coating ◽  
Element Method

The residual stress in epoxy adhesive layer deposited on metal and other substrate at room temperature is studied. With embedded strain gauges in arranged depth of epoxy layer, the strain changes in the adhesive layer induced by the curing procedure and the changes of ambient temperature were measured to evaluate the changes of residual stress in place during a period after the curing procedure finished. The actual strain in epoxy adhesive layer from curing is used to estimate the residual stresses in it. While taking the strain obtained from the surface of the adhesive layer as free strain, the residual stress can be calculated and presented a strongly cyclic variation with a period of 24 h. The inner stress is also analyzed using the finite element method.

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