Shaft part strength finite element analysis method

Abstract

The invention belongs to the technical field of strength analysis and simulation, and particularly relates to a shaft part strength finite element analysis method. The analysis method comprises the following steps: establishing a shaft part mathematical model by utilizing three-dimensional modeling software, and storing or exporting the model in a file format which can be identified by the analysis software; simplifying the model, and cancelling unnecessary geometrical characteristics; entering finite element analysis software, and setting a resolving type; importing the part mathematical model into finite element analysis software; selecting a tetrahedron or hexahedron unit to perform finite element mesh generation on the mathematical model; adding materials to the mathematical model or unit and inputting material parameters; applying boundary conditions to the mathematical model, the finite element or the node; setting a resolving output item; and resolving and displaying a resolvingresult. The phenomenon that the analysis result does not accord with the actual situation due to incorrect constraint modes, torque and bending moment applying modes and positions of the bearing, thekey groove, the spline and the gear is effectively avoided. The analysis result obtained by adopting the analysis method provided by the invention is more accurate.

Description

technical field [0001] The invention belongs to the technical field of strength analysis and simulation, in particular to a finite element analysis method for the strength of shaft parts. Background technique [0002] Shaft parts include optical shafts, spline shafts and gear shafts. It is one of the most critical parts in mechanical transmission equipment. According to the structural design standards, the strength finite element analysis must be carried out in the structural design process of shaft parts. The current problem is that the method of applying boundary conditions during the strength finite element analysis is not clear, and the analysis steps are not standardized, including the restraint methods at bearings, splines and gears, and the position where torque and bending moments are applied, resulting in inaccurate strength analysis results. Does not correspond to actual intensity values ​​and distributions. Contents of the invention [0003] The purpose of the...

AI Technical Summary

Problems solved by technology

The current problem is that the method of imposing boundary conditions in the strength finite element analysis is not clear, and the analysis steps are not standardized, including the restraint methods at the bearings, splines and gears, and the position where the torque and bending moment are applied, resulting in inaccurate strength analysis results and poor analysis results. Does not correspond to actual intensity values ​​and distribution