An Indoor Multi-Axis Fatigue Test Method for Motorcycle Frame Controlled by Orthogonal Force

Abstract

The invention discloses a motorcycle frame indoor multi-axis fatigue test method under orthogonal force control, which relates to a motorcycle frame fatigue test method and aims at solving the problems of a complicated test system structure, excitation channel coupling and hard iterative convergence and the like existing during a motorcycle frame fatigue test process in the prior art. A test system is included. The system is a multi-axis multi-excitation load spectrum simulation iteration system, multi-axis impact load on the frame during actual road driving can be simulated, and the clampingand loading mode and the loading characteristics during the actual road driving of the frame more tend to be consistent. The method can simulate the multi-axis impact load on the frame during the actual road driving of the motorcycle, the actual loading characteristics of the frame are vividly reproduced indoors, the frame fatigue performance can be checked more efficiently and accurately, the orthogonal force control mode is adopted, that is, a horizontal exciter and a vertical exciter both adopt a force excitation and control mode, the structural freedom and the motion decoupling of the system are well met, and high simulation precision is obtained.

Description

technical field [0001] The invention relates to a motorcycle frame fatigue test method, in particular to an indoor multi-axis fatigue test method of a motorcycle frame controlled by an orthogonal force. Background technique [0002] The motorcycle frame is the most critical load-bearing part of the whole vehicle. It is prone to fatigue fracture when it works for a long time under the multi-axial disturbance stress formed by the excitation of uneven road surface and the combined loading of passengers or cargo. Therefore, for the lightweight design of the frame of a new motorcycle model, its fatigue reliability assessment test is essential. Traditional road tests and proving ground tests are time-consuming and laborious, and have poor repeatability, while indoor bench tests can simulate and reproduce the actual road loading characteristics of the frame indoors, with a short cycle and good repeatability, and the fatigue assessment of the frame is highly targeted. It has a good...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an indoor multi-axis fatigue test method for motorcycle frame controlled by orthogonal force in order to solve the problems of complex structure of the test system, coupling of excitation channels and difficulty in iterative convergence existing in the fatigue test process of the motorcycle frame.

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