A New Approach to Comprehensive Modeling of Sheet Metal Tensile Test Data Using a Universal Exponential Expression

2020 ◽  
Author(s):  
Luis Sanchez Vega
2021 ◽  
Vol 183 ◽  
pp. 106724
Author(s):  
Won-Hee Kang ◽  
Stephen J. Hicks ◽  
Brian Uy ◽  
Farhad Aslani

Author(s):  
Shahrokh Zeinali-Davarani ◽  
Ming-Jay Chow ◽  
Raphaël Turcotte ◽  
Katherine Yanhang Zhang

The passive mechanical response of arteries is believed to be mainly dominated by elastin and collagen fibers. Many arterial diseases are accompanied by significant changes in quantity and as well as the microstructure of these constituents due to the mechanical and biological adaptive processes. In this study we focus on the biaxial tensile test data of elastase-treated porcine aortic tissues [1]. We study the mechanical behavior of aortic tissues under gradual elastin degradation through constitutive modeling and associate the mechanical response with the microstructure of collagen observed in the microscopic images of fresh and digested tissues.


1982 ◽  
Vol 10 (6) ◽  
pp. 263 ◽  
Author(s):  
R Horstman ◽  
KA Peters ◽  
RL Meltzer ◽  
M Bruce Vieth ◽  
R Papirno

2000 ◽  
Vol 277 (2-3) ◽  
pp. 263-273 ◽  
Author(s):  
Thak Sang Byun ◽  
Seok Hun Kim ◽  
Bong Sang Lee ◽  
In Sup Kim ◽  
Jun Hwa Hong

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3117
Author(s):  
Ihor Dzioba ◽  
Sebastian Lipiec ◽  
Robert Pala ◽  
Piotr Furmanczyk

Tensile uniaxial test is typically used to determine the strength and plasticity of a material. Nominal (engineering) stress-strain relationship is suitable for determining properties when elastic strain dominates (e.g., yield strength, Young’s modulus). For loading conditions where plastic deformation is significant (in front of a crack tip or in a neck), the use of true stress and strain values and the relationship between them are required. Under these conditions, the dependence between the true values of stresses and strains should be treated as a characteristic—a constitutive relationship of the material. This article presents several methodologies to develop a constitutive relationship for S355 steel from tensile test data. The constitutive relationship developed was incorporated into a finite element analysis of the tension test and verified with the measured tensile test data. The method of the constitutive relationship defining takes into account the impact of high plastic strain, the triaxiality stress factor, Lode coefficient, and material weakness due to the formation of microvoids, which leads to obtained correctly results by FEM (finite elements method) calculation. The different variants of constitutive relationships were applied to the FEM loading simulation of the three-point bending SENB (single edge notched bend) specimen to evaluate their applicability to the calculation of mechanical fields in the presence of a crack.


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