Article(id=1322594810016416654, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1322594807147512718, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20260239, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793260775330, onlineDateStr=2026-10-29, pubDate=1792425600000, pubDateStr=2026-10-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793260775330, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793260775330, creator=13701087609, updateTime=1793260775330, updator=13701087609, issue=Issue{id=1322594807147512718, tenantId=1146029695717560320, journalId=1189873562199433220, year='2026', volume='', issue='10', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='1792425600000', pubDateStr='2026-10-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1793260774647, creator='13701087609', updateTime=1793261345543, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322597202086703686, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1322594807147512718, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322597202086703687, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1322594807147512718, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=23, endPage=32, ext={EN=ArticleExt(id=1322594810196771727, articleId=1322594810016416654, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Control Strategy and Failure Model Development of High Elongation Metal Necking Simulation, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To address the issues of insufficient simulation accuracy for nonlinear large deformation and fracture induced by premature necking in numerical simulations of high-elongation metals, as well as prediction deviations in the failure behavior of the spot weld heat-affected zone, an SHS & linear extrapolation necking control strategy is proposed based on Considère instability theory. The modified Mohr-Coulomb (MMC) failure surface for DC03 base metal is established via mechanical tests under multiple stress states. Combined with parameter inversion technology, the failure parameters of the generalized incremental stress-state-dependent damage model for the spot weld heat-affected zone are calibrated, and verification is conducted through full-vehicle crash simulations. The results show that the numerical necking strain of DC03 material is delayed by 0.103 with a substantial efficiency improvement; the average peak error of spot weld failure simulation reaches 3.3%; the full-vehicle simulation can accurately reproduce the deformation and failure behaviors of both the base metal and the spot weld heat-affected zone. This scheme enables intelligent control of necking points, and significantly improves the accuracy of full-vehicle crash simulation and the prediction precision of structural performance boundaries.

, authors=Zhigao He, Ting Li, Qingyang Huang, Ruidie Zhu, Qinghu Kong, authorsList=Zhigao He, Ting Li, Qingyang Huang, Ruidie Zhu, Qinghu Kong, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322594810586842002, articleId=1322594810016416654, tenantId=1146029695717560320, journalId=1189873562199433220, language=CN, title=高延伸率金属数值颈缩控制策略与失效模型开发, columnId=1322594810385515408, journalTitle=汽车工艺与材料, columnName=2026中国汽车工程学会年会优秀论文（选登）, runingTitle=null, highlight=null, articleAbstract=

为解决高延伸率金属数值仿真中提前颈缩导致非线性大变形与断裂仿真精度不足，以及焊点热影响区失效行为预测偏差的问题，基于Considère失稳理论提出SHS&线性外推颈缩控制策略，通过多应力状态力学试验构建DC03母材莫尔-库仑准则(MMC)失效曲面，结合参数反求技术标定焊点热影响区广义增量应力状态相关损伤模型失效参数，并开展整车碰撞仿真验证。结果显示，DC03材料数值颈缩应变延后0.103，效率大幅提升；焊点失效仿真平均峰值误差为3.3%；整车仿真可准确复现母材及焊点热影响区的变形与失效行为。该方案可实现颈缩点智能控制，显著提升整车碰撞仿真精度与结构性能边界预测准确性。

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何志高（1996—），男，工程师，硕士学位，研究方向为材料与结构动态力学行为。

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何志高（1996—），男，工程师，硕士学位，研究方向为材料与结构动态力学行为。

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