Contact search method and device and storage medium

By calculating the contact gap and expanding the surface block in finite element simulation, searching for contact pairs combined with the penetration point and the surface block, the problem of high time-consuming calculation of the contact search link is solved and the simulation efficiency is improved.

CN120180838AActive Publication Date: 2025-06-20HUNAN MAIXI SOFTWARE CO LTD
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Patent Information

Application Number
CN202510664085.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-22
Publication Date
2025-06-20
Estimated Expiration
2045-05-22

AI Technical Summary

Technical Problem

During the finite element simulation process, the calculation of the contact search link is time-consuming, which affects the simulation efficiency. The prior art contact search methods have problems with high computational complexity and low efficiency.

Method used

By determining the contact points and surface blocks in the model to be searched, the contact gap is calculated based on the reference gap parameters and thickness parameters of the contact point, and the surface block is expanded when the maximum relative motion amount is not less than the contact allowance to search for penetrating contact points. When the maximum relative motion amount is less than the contact margin, the contact pair is searched based on the penetration amount between the penetration point and the surface block, and the coordinate parameters of the contact point are updated.

Benefits of technology

Through the adaptive iterative search process, the computing efficiency of the contact search link is improved, the number of iterations of global search is reduced, and the probability of penetration between surface blocks and contact points is enhanced.

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Abstract

The invention relates to the technical field of contact collision analysis, and discloses a contact search method and device and a storage medium. The method comprises the following steps: determining all contact points and surface blocks participating in contact in a to-be-searched model; calculating a contact gap according to the reference gap parameter and the thickness parameter of the contact point; calculating the maximum relative motion amount of the contact domain; when the maximum relative motion amount is not smaller than the contact margin, expanding the surface block according to the contact gap and the contact margin, and searching a penetrating contact point in the contact domain; searching for a contact pair according to a penetration amount between the penetrating contact point and the surface block when the maximum relative movement amount is less than the contact margin or after searching for the penetrating contact point within the contact domain; updating coordinate parameters of the contact points, and judging whether iteration ending conditions are met or not; if not, returning to the step of calculating the maximum relative motion amount of the contact domain; and if yes, outputting the contact pair. According to the embodiment of the invention, the calculation efficiency of the contact search link in the finite element simulation process can be improved.
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