Structure design-oriented suspension hard spot optimization method

Abstract

The invention relates to the technical field of automobile suspension structure design, and discloses a structure design-oriented suspension hard spot optimization method, which comprises the following steps: drawing a suspension design load position hard spot in CATIA software; drawing a plurality of groups of parameter-free hard spots, constraining the internal relative position of each group ofparameter-free hard spots according to the size relationship of the hard spots at the designed load position of the suspension, driving each group of parameter-free hard spots by setting a fixed spotand a wheel heartbeat height, and driving each group of parameter-free hard spots to different up-and-down jumping states by the wheel heartbeat height; drawing a to-be-optimized suspension K characteristic curve according to the suspension motion trail, and drawing the target suspension K characteristic curve and the to-be-optimized suspension K characteristic curve in the same table; and adjusting the suspension design load position hard spot to optimize the suspension K characteristic curve. When the suspension design load position hard spot is adjusted, simulation analysis does not need to be operated, and the suspension K characteristic curve can be automatically updated, so that all parameters of the K characteristic curve can be displayed in one interface, and various properties ofthe K characteristic can be conveniently balanced.

Description

technical field [0001] The invention relates to the technical field of automobile suspension structure design, in particular to a suspension hard point optimization method oriented to structure design. Background technique [0002] Among the K&C characteristics of the hard point position of the suspension, the K characteristic of the suspension refers to the wheel motion related only to the suspension rod, regardless of the movement of the force and mass; the C characteristic of the suspension is the deformation caused by the applied force, which is related to the spring of the suspension system , Rubber bushings and deformation of parts related to wheel movement. [0003] At present, the well-known suspension hard point optimization methods are all based on ADAMS software. The ADAMS / CAR module optimizes the suspension hard point to optimize the K&C characteristic curve and the smooth curve of the vehicle's handling stability, so as to meet the dynamic performance requiremen...

AI Technical Summary

Problems solved by technology

However, there are three shortcomings when using the ADAMS / CAR module to optimize the K characteristics of the suspension: first, the hard point setting of the suspension is earlier than the design of the suspension structure, and it is easy to find that the structure of the parts is not feasible or the strength is not good when designing the suspension structure. To meet the requirements and other issues, it is necessary to repeatedly set the suspension hard point, resulting in cumbersome operation and heavy workload

Second, a simulation analysis is required every time the hard point adjustment is performed, which is time-consuming and labor-intensive

Third, the parameter curves of K characteristics cannot be viewed at the same time, and it is difficult to control the impact of hard point adjustment on each K characteristic parameter

Images