Method for extracting and processing static load of vehicle body

Abstract

The invention discloses a method for extracting and processing a static load of a vehicle body, which comprises the following steps of: establishing a front and rear suspension excitation rack, integrating a front and rear suspension model and the front and rear suspension excitation rack into a whole vehicle static load extraction model, only operating once simulation, and simultaneously outputting a uniform vehicle body load file without manual processing and integration again. The simulation method is simplified, the processing time is greatly shortened, and errors of load file integration processing in the process are avoided.

Description

technical field [0001] The invention belongs to the technical field of automobiles, in particular to a method for extracting and processing the static load of a vehicle body. Background technique [0002] In the early stage of vehicle structure design, it is particularly important to guide the strength design of structural parts (these structural parts mainly include: body and chassis parts) to correctly extract the static load of structural parts. With the continuous progress and development of finite element technology and computer hardware resources, static load extraction and structural component strength simulation analysis have been widely used in vehicle development. The detailed technical route is: 1. Use multi-body dynamics software to build the suspension and vehicle multi-body dynamics model; 2. Calculate the external load file according to the required static working conditions (that is, the force of the tire); 3. Load the external load file, run simulation anal...

AI Technical Summary

Problems solved by technology

[0004]Technical defect 1: For the third point of the above technical route, when extracting the static load of the suspension components, the mature suspension based on the dynamics software ADAMS / Car Assembling the model, the external load files can be loaded uniformly, and the interface point load files can be exported uniformly, which can be quickly used for strength simulation analysis

This method needs to run two models and perform two simulations, which is complicated; secondly, when combining the front and rear suspension loads of the car body, it can only rely on manual processing, with a large amount of data and error-prone

[0005]Technical defect 2: For the fourth point of the above technical route, the current common method is to manually select and process and count the load values ​​of each component and interface under different working conditions , and finally judge the correctness of the extracted load according to whether the force is balanced under static conditions (whether the resultant force is similar to the gravity of the component)

The amount of data is huge, it is completely repetitive manual labor, and it is extremely error-prone in statistics

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