Non-driving front suspension assembly comprehensive fatigue durability testing device and method

Abstract

The invention relates to a non-driving front suspension assembly comprehensive fatigue durability testing device and method. The testing device comprises an experiment table frame, an actuator assembly and a numerical control system; the experiment table frame comprises a front auxiliary frame fixing component, a steering gear fixing component, a portal frame, a rear auxiliary frame fixing component and a shock absorber fixing component; the experiment table frame is used for simulating the fixing effect of a suspension assembly on a vehicle body so as to fix the suspension assembly; the actuator assembly is controlled by the numerical control system to load a left tire and a right tire up and down separately; and the numerical control system is used for detecting the fatigue durability test data of various working conditions of the suspension assembly in different steering states. The influence of different steering angles on the fatigue durability test conclusion of the non-driving front suspension assembly is comprehensively considered, so that real and reliable experimental benchmarking data are provided for design of the non-driving front suspension assembly and fatigue life analysis and the like, thereby shortening the development period of each part of the non-driving front suspension assembly and lowering the cost and the like.

Description

technical field [0001] The invention relates to the field of fatigue durability testing of automobile suspension assemblies, in particular to a comprehensive fatigue durability testing device and method for non-driven front suspension assemblies. Background technique [0002] In the process of automobile fatigue durability simulation and iterative model building, index parameters such as suspension assembly fatigue durability, roll stiffness, and strength are required. At the same time, the component assembly also needs to be fatigued during the vehicle manufacturing stage and the OTS (Off Tooling Sample) certification stage. Endurance Verified. At this stage, the suspension assembly mainly obtains experimental data through the following methods: [0003] 1) Use the K&C bench to obtain initial data. The loading frequency of the actuating loading device of this bench is low, and high-frequency fatigue durability experiments cannot be completed. This bench can only realize th...

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Problems solved by technology

[0003] 1) Use the K&C bench to obtain initial data. The loading frequency of the actuating loading device of this bench is low, and high-frequency fatigue durability experiments cannot be completed. This bench can only realize the fatigue life prediction of key components, and cannot complete the indoor bench Verification, the data obtained by using this bench cannot be used as fatigue durability conclusion

[0004] 2) The fatigue durability of the parts is verified on the actual vehicle track, but the fatigue durability of the actual vehicle road test is expensive

[0005] 3) The durability test of components alone cannot reflect the comprehensive fatigue durability conclusion of the suspension assembly

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