基于多种网格策略的SPR工艺显式仿真研究

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中图分类号：U466 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250169

Research on Explicit Simulation of SPR Process Based on Multiple Mesh Strategies

Li Xupeng， Wang Xiang， Sun Zhiqiang， Qi Jingyuan， Chen Yichang， Qi Weizhong （BYD Industries Co.， Ltd.， Shenzhen 518000）

Abstract：Inorder toimprove thedevelopment eficiencyof the Self-Piercing Rivet （SPR） joining processand to reducerelianceonphysical testing，thisstudyemploys finite-element simulation to numerically model the SPR conection.Using theAbaqus/Explicitplatform，3 mesh strategies—Arbitrary Lagrangian-Eulerian （ALE），Coupled Eulerian-Lagrangian （CEL），and Smoothed Particle Hydrodynamics （SPH）—are systematically compared withrespect to theirabilitytosimulatesheetpiercing，interlock formation，andtheevolutionofjoiningforces.Theresultsdemonstrate thattheSPHapproach most faithfullyreproducescritical joint geometry（e.g.，interlockvalue，residual botom thickness，andrivet head height）andtheforce-displacementresponse，whilealsooferingamarkedly higher computational eficiency thanthe CEL method.Although the CEL strategy handleslargedeformationsadequately，its computationalcostisprohibitive.TheALEstrategyprovidesrapidassessmentsbut exhibitsnoticeabledeviations when modelingextremedeformationandelasticrecovery.Consequently，SPHisidentifiedasaneficientandreliable simulation technique for SPR process，ofering valuable guidance for the design and process optimization of automotive body joining structures.

Keywords：SPR，Finite-elementsimulation，Meshstrategy，Processanalysis

1前言

自穿刺铆接（SelfPiercingRiveting，SPR）作为一种先进的冷连接技术，在高强度钢、铝合金、复合材料等异种材料连接方面具有独特优势，已在白车身制造领域得到广泛应用。（剩余8409字）