Suspension load decomposition, data processing and finite element load loading method

Abstract

The invention discloses a suspension load decomposition, data processing and finite element load loading method, which comprises the following steps of: inputting a whole vehicle hard point coordinate, an elastic element attribute parameter and a structure topological relation, and establishing a whole vehicle front and rear suspension rigid-flexible coupled multi-body dynamic model; inputting vehicle design parameters and enterprise load working condition standards, and automatically calculating and integrating the external force of the suspension under each load working condition; loading an external force file; carrying out suspension simulation analysis and load analysis; carrying out batch processing on load data; generating a part load decomposition report; verifying the validity of the part load data; exporting the node number, the number and the coordinate of the part; inputting a finite element model of the part; automatically creating part load loading nodes in batches; arranging a card, and performing finite element simulation analysis of the parts. In the process of the method, synchronous processing of all data is carried out at the same time, so that the working time is greatly saved, the efficiency is improved, and the correctness of load data provided for CAE engineers is ensured.

Description

technical field [0001] The invention belongs to the technical field of simulation analysis in the whole vehicle design and development process. More specifically, the present invention relates to a suspension load decomposition, data processing and finite element load loading method. Background technique [0002] With the continuous development of finite element analysis technology, the most important part in the whole vehicle development process is to complete the finite element simulation analysis of the whole vehicle parts when there is no physical prototype, to verify whether the designed product meets the rigidity , strength, fatigue durability, safety and other requirements; and the key factor in the finite element simulation analysis of parts is the acquisition of part boundary load spectrum. Therefore, load decomposition and finite element simulation analysis of component virtual prototypes have been widely used in vehicle development. [0003] At present, in the a...

AI Technical Summary

Problems solved by technology

Traditional load data processing is mainly manual processing. In the process of load data processing, hundreds of repeated operations are required, resulting in cumbersome work and extremely error-prone

[0017] 3. For item 5 of the above technical route, after the load data sorting is completed, if the load data is found to be incorrect during the load verification process, the traceability work cannot be carried out. At this time, the engineer will repeat the data processing of the load again

In addition, when compiling the load decomposition report, this work is also a repetitive mechanical labor, and the accuracy of the load decomposition results of different nodes is different, and the report format will also be different, which affects the consistency and aesthetic feeling of the report;

[0018] 4. For item 7 of the above technical route, when CAE engineers create finite element loading nodes of parts, they need to check with multibody engineers to provide load files, check the hard point coordinates of all nodes of each part, and then create Manually input coordinates in the software to create loading nodes. In the process of checking the coordinates of all hard points of each component, the amount of data is huge, and it is very easy to have problems such as checking omissions and misalignment; and it is also easy to enter errors when manually inputting coordinates to create loading nodes. Coordinates etc.

In addition, after creating all the loading nodes, it is necessary to ensure that the node numbers in the finite element are consistent with the numbers provided by the multi-body engineer. If the node numbers are mixed up, it will lead to distortion of the finite element simulation results.

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