Automotive trim abnormal sound optimization method and storage medium

Through the combination of finite element software and supercell calculation, the interior model is optimized, which solves the problem of excessive calculation result files in interior noise simulation analysis, and achieves efficient and accurate noise risk assessment and optimization.

CN120337631APending Publication Date: 2025-07-18CHERY AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202510341711.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

The calculation result files in the simulation analysis of automobile interior noise are too large, which leads to the long processing time of engineers, making it difficult for them to complete the analysis of automobile interior noise efficiently and accurately.

Method used

The body TB model is constructed using finite element software, and the connection relationship between interior parts is analyzed through super-unit calculation, combined with the Opt i Struct solver to calculate the maximum displacement and risk probability, and optimize the interior model to reduce the risk of abnormal noise.

Benefits of technology

It improves calculation efficiency, shortens analysis time, improves calculation accuracy, reduces the risk of interior noise, and meets the requirements of interior noise simulation analysis.

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Abstract

The invention discloses an automobile interior trim abnormal sound optimization method which comprises the following steps: step 1, constructing an automobile body TB model based on finite element software, calculating a super unit according to the TB model, and determining a connection relationship between automobile interior trim parts; 2, setting a connection relation, calculating a working condition, and generating a calculation header file; 3, outputting the maximum displacement according to a calculation result; 4, according to the DTS table of the output result and a normal distribution formula, whether the abnormal sound risk is smaller than a set probability or not is determined; and step 5, if not, optimizing the appearance and the connection relation of the interior trim, and returning to the step 2, and if so, determining that the risk is closed. The method has the advantages that finite element software is adopted to establish the vehicle body model, the vehicle body model is calculated and optimized, a super-unit model is output, in an Opt i struct calculation file, interior model connection points (CCB or vehicle side door and vehicle body installation points) are connected with vehicle body points I D, and a result can be calculated after boundary conditions are set. The calculation and post-processing working time is saved, the error with the calculation result of the TB model is small, and the requirement for simulating and analyzing the abnormal sound of the interior trim is met.
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Citation Information

Patent Citations

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