Comparison of the Parallelization Efficiency of a Thermo - Structural Problem Simulated in SIMULIA Abaqus and ANSYS Mechanical

Abstract

The linear friction welding (LFW) process is characterized by transient nonlinear physical phenomena which result in high stress and temperature gradients in metal objects. To develop an adequate resource efficient numerical model it is necessary to be able to solved with parallel computation for different sets of model parameters. In this paper the parallelization efficiency of a thermo-structural problem is simulated in SIMULIA Abaqus and ANSYS Mechanical and it is compared.

Shear coefficient determination in linear friction welding of aluminum alloys

“…The bottom specimen was modeled as a rigid plate, meshed for thermal analysis only. Although this approach is less accurate than modeling both the specimens as rigid-visco-plastic objects, it is widely used in literature [24][25][26] due to its simplicity and significantly faster convergence, making it suitable for industrial applications. Due to the geometrical symmetry of the process, a symmetry plane was placed along the oscillating direction in order to simulate half of each object, reducing the computational cost in 3D.…”

“…A few papers can be found in literature focusing on numerical simulation of LFW [23]. Most of the numerical models in literature, developed for titanium alloys, use a 2D approach with one of the two specimens modeled as a rigid-viscoelastic or elasto-plastic object and the other as a rigid one [24][25][26]. Li et al [27] modeled the LFW of TC4 titanium alloy by a combination of explicit and implicit finite element analysis to study the influence of the main process parameters on axial shortening and temperature distribution.…”

Design of Numerical Simulations of Linear Friction Welding Processes: Issues and Difficulties

“…Yamileva et al [11] proposed a numerical analysis, developed in the CAE systems SIMULIA ABAQUS™ and ANSYS™ Mechanical, for the simulation of the elastic stage of LFW. A transient analysis, calculating stresses and temperatures along the weldline, is carried out.…”

The effect of micro - swinging on joint formation in linear friction welding

“…Up to now, different researchers [11][12][13][14][15][16][17][18][19][20] have built 2D or 3D thermo-mechanically coupled models in the Lagrangian frame using commercial software like DEFORM, ABAQUS, ANSYS or FORGE. The predicted temperature and axial shortening under certain welding conditions were comparable to experiments, but excessive element distortion and flash formation cannot be resolved effectively for a numerical solution.…”