The linear friction welding process of α+β titanium alloys VT6 and VT8M-1 has been studied and in particular the investigation of microstructure in the weld zone. The results of this investigation were used for development of a numerical model of LFW equilibrium stage using the ANSYS Mechanical software. The set of parameters used in this model allowed to reach a quantitative agreement with experiments

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.

This paper describes the results of the mathematical and computer modeling efforts of heat generation in the contact area of a moving object on an infinite plane with friction. The distribution of contact pressure with a linear approximation was obtained. The heat equations for a nonlinear volume heat source were solved. It is shown, that at the initial stages of the linear friction welding (LFW) process temperature distribution is non-elliptical with two hot spots appearing near the edges of the moving specimen. Then as the process progresses these two spots expand and move to the center of the specimen. The results of the mathematical and the numerical modeling in ANSYS APDL software are in good quantitative agreement.

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A 3D computer model of the preliminary and the transition phases of LFW using ANSYS was developed. Based on the adhesion phenomena theory, we introduce a simple method to evaluate the areas of joint formation. Results of this evaluation are in good agreement with experiments. Custom software for the 3D-simulation of the process of joint formation and material movement into the flash was built, which used the results of the FEM model.