Simulation piece design method and system considering stress gradient of wheel disc after pre-rotation

Through finite element simulation and stress gradient theory, the simulation component is designed to consider the stress gradient of the pre-rotated rear wheel disc, which solves the problem of increasing difficulty in fatigue life prediction in traditional methods and achieves more accurate fatigue life prediction.

CN119647210APending Publication Date: 2025-03-18NORTHWESTERN POLYTECHNICAL UNIV
0 Cites 1 Cited by

Patent Information

Application Number
CN202510028582.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

Traditional roulette fatigue life prediction methods are difficult to accurately consider the stress gradient after pre-rotation, resulting in increased difficulty in predicting fatigue life.

Method used

By obtaining the geometric model of the pre-rotating roulette and the physical properties parameters of the material, the maximum stress distribution of the unpre-rotated and pre-rotating roulette is determined using finite element simulation software, and the effective assessment distance is determined based on the stress gradient theory, and the key geometric dimensions and loads of the simulation are finally designed.

Benefits of technology

It reduces the complexity of the simulation component design, ensures that the fatigue changes of the pre-rotated wheel disc are effectively verified, and improves the accuracy of fatigue life prediction.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a design method and system for a simulation part considering the stress gradient of a pre-rotated wheel disc, and relates to the technical field of wheel disc fatigue life detection.The method comprises the steps that a geometric model of the pre-rotated wheel disc is obtained, and physical property parameters of a wheel disc preparation material at different temperatures are determined; determining first maximum stress distribution of the non-pre-rotating wheel disc and the pre-rotating wheel disc according to the geometric model and the physical property parameters based on finite element simulation software; based on a stress gradient theory, determining an effective assessment distance of the maximum principal stress of the non-pre-rotating wheel disc and the pre-rotating wheel disc; determining second maximum stress distribution according to the first maximum stress distribution and an effective assessment distance between the maximum principal stress of the non-pre-rotating wheel disc and the maximum principal stress of the pre-rotating wheel disc; and according to the second maximum stress distribution, designing the key geometric dimension, the pre-stretching load and the fatigue load of the simulation piece. According to the invention, the design complexity of the simulation part can be reduced, and the fatigue change of the pre-rotated wheel disc can be effectively verified.
Need to check novelty before this filing date? Find Prior Art