Article(id=1153780544123953226, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1153780537878634558, articleNumber=null, orderNo=null, doi=10.19562/j.chinasae.qcgc.2024.01.018, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1685635200000, receivedDateStr=2023-06-02, revisedDate=1687881600000, revisedDateStr=2023-06-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1753012317924, onlineDateStr=2025-07-20, pubDate=1706112000000, pubDateStr=2024-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753012317924, onlineIssueDateStr=2025-07-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753012317924, creator=13701087609, updateTime=1753012317924, updator=13701087609, issue=Issue{id=1153780537878634558, tenantId=1146029695717560320, journalId=1146120084050784272, year='2024', volume='46', issue='1', pageStart='1', pageEnd='186', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753012316436, creator=13701087609, updateTime=1753067606853, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1154012442750345936, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1153780537878634558, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1154012442750345937, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1153780537878634558, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=170, endPage=178, ext={EN=ArticleExt(id=1153780544765681740, articleId=1153780544123953226, tenantId=1146029695717560320, journalId=1146120084050784272, language=EN, title=Research on Fast Prediction Method of Stress Field of Automotive Parts Based on Graph Network, columnId=1149809889280750125, journalTitle=Automotive Engineering, columnName=Selected Papers, runingTitle=null, highlight=
Finite Element Analysis (FEA),as an important Computer-aided Engineering (CAE) technology,plays a significant role in the area of automotive part development. However,it costs too much time when solving complicated problems,which affects the development cycle. In this paper,a neural network method is proposed,in which sample data is provided by finite element simulation and the mapping relationship between finite element input and output is established by graph network technology. The graph network method is used to predict the stress field of the seat frame assembly. The prediction method simulates the connection relationship between nodes in the finite element model using graph nodes and graph edges,which can effectively express the topological relationship between elements in the finite element model. The prediction results are compared with the results of the finite element simulation. The results show that the method can precisely predict the maximum stress and its corresponding location of the seat frame assembly,with strong predictive capabilities for stress distribution consistency. Additionally,the model has a significant computational advantage,with a calculation speed three orders of magnitude faster than that of the corresponding finite element solver.
, articleAbstract=
Finite Element Analysis (FEA), as an important Computeraided Engineering (CAE) technology, plays a significant role in the area of automotive part development. However, it costs too much time when solving complicated problems, which affects the development cycle. In this paper, a neural network method is proposed, in which sample data is provided by finite element simulation and the mapping relationship between finite element input and output is established by graph network technology. The graph network method is used to predict the stress field of the seat frame assembly. The prediction method simulates the connection relationship between nodes in the finite element model using graph nodes and graph edges, which can effectively express the topological relationship between elements in the finite element model. The prediction results are compared with the results of the finite element simulation. The results show that the method can precisely predict the maximum stress and its corresponding location of the seat frame assembly, with strong predictive capabilities for stress distribution consistency. Additionally, the model has a significant computational advantage, with a calculation speed three orders of magnitude faster than that of the corresponding finite element solver.
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有限元分析作为一种重要的计算机辅助工程技术,在汽车零部件开发中起着极为重要的作用,但是在分析复杂问题时耗时长,影响开发周期。为此,本文提出了一种以有限元仿真提供样本数据、以图网络技术建立有限元输入与输出间的映射关系的神经网络方法,将该图网络方法应用于座椅骨架总成的应力场预测。该预测方法中采用图节点和图边模拟了有限元模型中节点间的连接关系,由此表达有限元模型中单元之间的拓扑关系,并将预测结果与有限元仿真结果进行了对比。结果表明该方法能准确预测座椅骨架总成的最大应力及其出现的位置,对应力分布一致性均有较好的预测能力,且计算速度比相应有限元求解度快3个数量级以上。
, articleAbstract=
有限元分析作为一种重要的计算机辅助工程技术,在汽车零部件开发中起着极为重要的作用,但是在分析复杂问题时耗时长,影响开发周期。为此,本文提出了一种以有限元仿真提供样本数据、以图网络技术建立有限元输入与输出间的映射关系的神经网络方法,将该图网络方法应用于座椅骨架总成的应力场预测。该预测方法中采用图节点和图边模拟了有限元模型中节点间的连接关系,由此表达有限元模型中单元之间的拓扑关系,并将预测结果与有限元仿真结果进行了对比。结果表明该方法能准确预测座椅骨架总成的最大应力及其出现的位置,对应力分布一致性均有较好的预测能力,且计算速度比相应有限元求解度快3个数量级以上。
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Loss functions for binary classification and class probability estimation[M]. University of Pennsylvania,2005., articleTitle=null, refAbstract=null)], funds=[Fund(id=1170305294442701007, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780544123953226, awardId=2022YFE0208000, language=CN, fundingSource=
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座椅骨架有限元模型, figureFileSmall=6zqc1sZfGXu6MbxCMknuIQ==, figureFileBig=OgtnGIsy1/4dzmkIfR2KJA==, tableContent=null), ArticleFig(id=1170305291884175500, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780544123953226, language=EN, label=null, caption=null, figureFileSmall=BXqhHb7d6lE+XryWR0Hljg==, figureFileBig=ViWtwhpU/VeJkhWqpiNG/g==, tableContent=null), ArticleFig(id=1170305291951284365, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780544123953226, language=CN, label=图 6, caption=
座椅骨架仿真应力结果, figureFileSmall=BXqhHb7d6lE+XryWR0Hljg==, figureFileBig=ViWtwhpU/VeJkhWqpiNG/g==, tableContent=null), ArticleFig(id=1170305292060336271, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780544123953226, language=EN, label=null, caption=null, figureFileSmall=SrKOAD4uu0SZNRjUR2VLXQ==, figureFileBig=Ux/VmBrGebbtFBa4qBe4kA==, tableContent=null), ArticleFig(id=1170305292127445137, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780544123953226, language=CN, label=图 7, caption=
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| 编号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 初始厚度/mm | 1.4 | 1.2 | 2.0 | 1.8 | 3.4 | 1.8 | 1.4 | 3.4 | 4.5 | 7 | 2.0 | 2.0 |
| 采样下界/mm | 1.0 | 0.84 | 1.4 | 1.26 | 2.4 | 1.26 | 1.0 | 2.4 | 3.15 | 4.9 | 1.4 | 1.4 |
| 采样上界/mm | 1.8 | 1.56 | 2.6 | 2.34 | 4.4 | 2.34 | 1.8 | 4.4 | 5.85 | 9.1 | 2.6 | 2.6 |
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采样范围
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| 编号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 初始厚度/mm | 1.4 | 1.2 | 2.0 | 1.8 | 3.4 | 1.8 | 1.4 | 3.4 | 4.5 | 7 | 2.0 | 2.0 |
| 采样下界/mm | 1.0 | 0.84 | 1.4 | 1.26 | 2.4 | 1.26 | 1.0 | 2.4 | 3.15 | 4.9 | 1.4 | 1.4 |
| 采样上界/mm | 1.8 | 1.56 | 2.6 | 2.34 | 4.4 | 2.34 | 1.8 | 4.4 | 5.85 | 9.1 | 2.6 | 2.6 |
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| 硬件/系统/IDE | 说明/版本 |
| CPU | Inter(R) 13900K |
| GPU | Nvidia GeForce RTX 4090 |
| 显存 | 24 GB |
| CUDA | 12.0 |
| Windows | Windows11 |
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训练环境
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| 硬件/系统/IDE | 说明/版本 |
| CPU | Inter(R) 13900K |
| GPU | Nvidia GeForce RTX 4090 |
| 显存 | 24 GB |
| CUDA | 12.0 |
| Windows | Windows11 |
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| 性能指标 | Loss | MAE | MSE | RMSE |
| 转向盘骨架 | 0.001 0 | 0.268 6 | 0.558 0 | 0.747 0 |
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基础实验总体性能评估
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| 性能指标 | Loss | MAE | MSE | RMSE |
| 转向盘骨架 | 0.001 0 | 0.268 6 | 0.558 0 | 0.747 0 |
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| 实验方法 | FEA/s | 图网络+CPU/s | 图网络+GPU/s |
| 消耗时间 | 4 500 | 2.513 | 0.865 |
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FEA与图网络预测平均耗时对比
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| 实验方法 | FEA/s | 图网络+CPU/s | 图网络+GPU/s |
| 消耗时间 | 4 500 | 2.513 | 0.865 |
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| 传递步数 | MSE | RMSE |
| 15 | 1.100 842 | 0.277 184 |
| 20 | 0.755 519 | 0.190 884 |
| 25 | 0.558 019 | 0.141 125 |
| 30 | 0.543 721 | 0.140 798 |
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图网络消息传递步数优化训练结果
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| 传递步数 | MSE | RMSE |
| 15 | 1.100 842 | 0.277 184 |
| 20 | 0.755 519 | 0.190 884 |
| 25 | 0.558 019 | 0.141 125 |
| 30 | 0.543 721 | 0.140 798 |
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| 编号 | FEM仿真 应力/MPa | 预测应力/MPa | 绝对误差/MPa | 相对 误差/% |
| 1 | 437.799 7 | 431.977 45 | 5.822 3 | 1.329 9 |
| 2 | 330.791 7 | 331.800 72 | 1.009 0 | 0.305 0 |
| 3 | 383.638 9 | 385.096 37 | 1.457 5 | 0.379 9 |
| 4 | 476.107 9 | 477.871 03 | 1.763 1 | 0.370 3 |
| 5 | 464.164 3 | 470.417 97 | 6.253 7 | 1.347 3 |
| 6 | 411.926 5 | 413.097 35 | 1.170 9 | 0.284 2 |
| 7 | 355.065 1 | 354.502 30 | 0.562 8 | 0.158 5 |
| 8 | 369.533 5 | 369.539 15 | 0.005 7 | 0.001 5 |
| 9 | 393.871 8 | 394.924 13 | 1.052 3 | 0.267 2 |
| 10 | 412.051 8 | 413.097 44 | 1.045 6 | 0.253 8 |
| 平均 | 403.495 1 | 404.232 39 | 2.014 3 | 0.469 8 |
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CAE仿真与神经网络座椅最大应力误差结果
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| 编号 | FEM仿真 应力/MPa | 预测应力/MPa | 绝对误差/MPa | 相对 误差/% |
| 1 | 437.799 7 | 431.977 45 | 5.822 3 | 1.329 9 |
| 2 | 330.791 7 | 331.800 72 | 1.009 0 | 0.305 0 |
| 3 | 383.638 9 | 385.096 37 | 1.457 5 | 0.379 9 |
| 4 | 476.107 9 | 477.871 03 | 1.763 1 | 0.370 3 |
| 5 | 464.164 3 | 470.417 97 | 6.253 7 | 1.347 3 |
| 6 | 411.926 5 | 413.097 35 | 1.170 9 | 0.284 2 |
| 7 | 355.065 1 | 354.502 30 | 0.562 8 | 0.158 5 |
| 8 | 369.533 5 | 369.539 15 | 0.005 7 | 0.001 5 |
| 9 | 393.871 8 | 394.924 13 | 1.052 3 | 0.267 2 |
| 10 | 412.051 8 | 413.097 44 | 1.045 6 | 0.253 8 |
| 平均 | 403.495 1 | 404.232 39 | 2.014 3 | 0.469 8 |
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| 验证集编号 | FEM预测的最大应力节点id | GNN预测的最大应力节点id | 最大应力位置的距离/mm |
| 1 | 44180 | 44183 | 4.079 |
| 2 | 42928 | 42928 | 0 |
| 3 | 42928 | 42928 | 0 |
| 4 | 44183 | 44180 | 4.079 |
| 5 | 44180 | 44180 | 0 |
| 6 | 42928 | 42928 | 0 |
| 7 | 42928 | 42928 | 0 |
| 8 | 42928 | 42928 | 0 |
| 9 | 44180 | 44180 | 0 |
| 10 | 42928 | 42928 | 0 |
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最大应力位置预测
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| 验证集编号 | FEM预测的最大应力节点id | GNN预测的最大应力节点id | 最大应力位置的距离/mm |
| 1 | 44180 | 44183 | 4.079 |
| 2 | 42928 | 42928 | 0 |
| 3 | 42928 | 42928 | 0 |
| 4 | 44183 | 44180 | 4.079 |
| 5 | 44180 | 44180 | 0 |
| 6 | 42928 | 42928 | 0 |
| 7 | 42928 | 42928 | 0 |
| 8 | 42928 | 42928 | 0 |
| 9 | 44180 | 44180 | 0 |
| 10 | 42928 | 42928 | 0 |
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| 误差/MPa | <1 | 1~2 | 2~5 | 5~10 | >10 |
| 数量 | 61 363 | 1 986 | 899 | 55 | 36 |
| 百分比/% | 95.37 | 3.09 | 1.40 | 0.08 | 0.06 |
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误差分布区间
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| 误差/MPa | <1 | 1~2 | 2~5 | 5~10 | >10 |
| 数量 | 61 363 | 1 986 | 899 | 55 | 36 |
| 百分比/% | 95.37 | 3.09 | 1.40 | 0.08 | 0.06 |
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