Heat-machinery-abrasion coupling analysis numerical simulation method based on finite element

The invention relates to a heat-machinery-abrasion coupling analysis numerical simulation method based on a finite element. The method includes the following steps: establishing a finite element model; discretizing a heat-machinery-abrasion coupling process; performing heat-machinery coupling analysis by commercial finite element software; outputting a temperature field of a contact pair and a contact pressure field; calculating abrasion loss, and determining abrasion direction; outputting node abrasion loss and abrasion direction; correcting node displacement, and updating the finite element model; judging whether all the increment steps are completed or not, if not, returning to a loop operation until all the increment steps are completed, and if yes, outputting contact pressure field distribution, temperature field distribution and abrasion loss distribution which correspond to contract nodes of all the increment steps. The commercial finite element software is taken as a platform, so that the method is simple and reliable; calculation of the abrasion loss is completed inside the finite element software, so that the method is rapid and efficient. The method can be widely applied to structural analysis relating to dry sliding friction.