scholarly journals Numerical simulation of crack growth process in Brazilian disk test using finite element method

2021 ◽  
Vol 861 (3) ◽  
pp. 032076
Author(s):  
Yu Sun ◽  
Tao Feng ◽  
Dong Wang ◽  
Zaobao Liu
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Crack Growth ◽  
Growth Process ◽  
Brazilian Disk ◽  
Brazilian Disk Test ◽  
Disk Test ◽  
Crack Growth Process ◽  
Element Method

Numerical Simulation of Crack Growth of Composite Structure Based on XFEM

2012 ◽  
Vol 598 ◽  
pp. 366-369 ◽  
Author(s):  
Yong Qiang Zhong
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Crack Growth ◽  
Composite Structure ◽  
Initial Crack ◽  
Difficult Problem ◽  
Structure Design ◽  
Bending Test ◽  
Element Method

The basic principle and technique of a new and effective extended finite element method is introduced first in the paper. Compared with classical finite element method, the crack growth can be simulated by XFEM without making the crack surface associated to the mesh and without remeshing after crack growth. On the basis it is applied to analyze difficult problem of fracture and crack growth mechanism of composite pavement structural. By three-point bending test of composite structural beam, the whole process of initial crack and the crack growth of composite pavement structure is analyzed by numerical simulation. It can be divided into four key stages from cracking to crack reflection and each stage is presented by tensile stress and SATUSXFEM. The research results can provide important reference for composite structure design and proposed control countermeasure.

Multi-Step Forward Finite Element Method for the Numerical Simulation of Sheet Metal Forming

2011 ◽  
Vol 474-476 ◽  
pp. 251-254
Author(s):  
Jian Jun Wu ◽  
Wei Liu ◽  
Yu Jing Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Mapping Method ◽  
Constitutive Relationship ◽  
Element Method

The multi-step forward finite element method is presented for the numerical simulation of multi-step sheet metal forming. The traditional constitutive relationship is modified according to the multi-step forming processes, and double spreading plane based mapping method is used to obtain the initial solutions of the intermediate configurations. To verify the multi-step forward FEM, the two-step simulation of a stepped box deep-drawing part is carried out as it is in the experiment. The comparison with the results of the incremental FEM and test shows that the multi-step forward FEM is efficient for the numerical simulation of multi-step sheet metal forming processes.

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