A transmission shaft spline full tooth surface grinding residual stress simulation method

Abstract

The invention relates to a transmission shaft spline full tooth surface grinding residual stress simulation method. The method comprises the following steps: 1, preparing a residual stress analysis ortest result of universal grinding; 2, establishing a local grinding coordinate system for each finite element grid unit on the surface layer of the spline tooth; 3, according to the coordinate transformation relation between the local grinding coordinate system on the spline tooth and the spline global coordinate system, converting the single-point universal grinding residual stress obtained through analysis or testing to the spline global coordinate system for expression; And 4, traversing all tooth surface grid units, and carrying out the coordinate system transformation operation to finally obtain the residual stress distribution of the full tooth surface. A spline part grinding test and a test process can be replaced by a simple and universal grinding test and finite element simulation combined way, a tooth surface residual stress distribution result which is finer and clearer than that of a complete part test is obtained, meanwhile, the number of samples is greatly reduced, the test period is shortened, and the economic cost and the time cost are reduced.

Description

technical field

[0001] The invention belongs to the field of high-performance and long-life transmission, and in particular relates to a grinding residual stress analysis method of spline tooth surface of a transmission shaft. Background technique

[0002] The transmission shaft is an indispensable key component in the transmission system of heavy-duty vehicles, and its performance plays a vital role in the function realization and reliability of the entire transmission device. With the development of vehicles in the direction of diversification of types and functions in the future, the demand for high mobility and high power density will become clearer, which will inevitably lead to a more compact structure, lighter weight, and significantly higher speed of the vehicle drive shaft, and the operation The conditions are even worse, and the vibration and shock loads are greatly increased. The increasingly severe external working conditions above have resulted in more complex ...

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