Article(id=1153780539858342061, tenantId=1146029695717560320, journalId=1146120084050784272, issueId=1153780537878634558, articleNumber=null, orderNo=null, doi=10.19562/j.chinasae.qcgc.2024.01.019, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1681488000000, receivedDateStr=2023-04-15, revisedDate=1687622400000, revisedDateStr=2023-06-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1753012316908, onlineDateStr=2025-07-20, pubDate=1706112000000, pubDateStr=2024-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753012316908, onlineIssueDateStr=2025-07-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753012316908, creator=13701087609, updateTime=1753012316908, 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=179, endPage=186, ext={EN=ArticleExt(id=1153780540365852847, articleId=1153780539858342061, tenantId=1146029695717560320, journalId=1146120084050784272, language=EN, title=Integrated Design of Precision Aluminum Castings Parts and Its Application in Lightweight Vehicle Body, columnId=1149809889280750125, journalTitle=Automotive Engineering, columnName=Selected Papers, runingTitle=null, highlight=
The integrated precision casting technology of aluminum alloy is one of the important ways to achieve lightweight of automobiles. Firstly,lightweight aluminum alloy material,investment vacuum suction casting process,and topology optimization are adopted to carry out an integrated design of "material,process and structure" for the front subframe and dashboard crossbeam of the white body in this paper. Secondly,the weight,research and development cost,and development cycle of integrated aluminum alloy structural components are compared to the original steel components,which are significantly reduced. Finally,finite element simulation analysis and bench tests are conducted on the stiffness and modal of the white body with integrated precision cast aluminum parts. The results show that after the integrated design,the front subframe and dashboard crossbeam has reduced weight by 36.6% and 30.8% respectively,while the performance of the white body meets the design requirements.
, articleAbstract=
The integrated precision casting technology of aluminum alloy is one of the important ways to achieve lightweight of automobiles. Firstly, lightweight aluminum alloy material, investment vacuum suction casting process, and topology optimization are adopted to carry out an integrated design of "material, process and structure" for the front subframe and dashboard crossbeam of the white body in this paper. Secondly, the weight, research and development cost, and development cycle of integrated aluminum alloy structural components are compared to the original steel components, which are significantly reduced. Finally, finite element simulation analysis and bench tests are conducted on the stiffness and modal of the white body with integrated precision cast aluminum parts. The results show that after the integrated design, the front subframe and dashboard crossbeam has reduced weight by 36.6% and 30.8% respectively, while the performance of the white body meets the design requirements.
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*, columnId=1149809889410773550, journalTitle=汽车工程, columnName=精选论文, runingTitle=null, highlight=
铝合金一体化精密铸造技术是实现汽车轻量化的重要方式之一。本文首先采用轻质铝合金材料、熔模真空吸铸工艺以及拓扑优化对白车身前副车架及仪表板横梁进行“材料-工艺-结构”一体化设计;其次对比一体化铝合金结构件的质量、研发成本、研制周期,较原钢制件大幅度降低;最后对加装一体化精密铸铝件的白车身进行刚度与模态的有限元仿真分析及台架试验。结果表明,一体化设计后,前副车架及仪表板横梁分别轻量36.6%、30.8%,同时白车身性能均满足设计要求。
, articleAbstract=
铝合金一体化精密铸造技术是实现汽车轻量化的重要方式之一。本文首先采用轻质铝合金材料、熔模真空吸铸工艺以及拓扑优化对白车身前副车架及仪表板横梁进行“材料工艺结构”一体化设计;其次对比一体化铝合金结构件的质量、研发成本、研制周期,较原钢制件大幅度降低;最后对加装一体化精密铸铝件的白车身进行刚度与模态的有限元仿真分析及台架试验。结果表明,一体化设计后,前副车架及仪表板横梁分别轻量36.6%、30.8%,同时白车身性能均满足设计要求。
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1 School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009
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1 合肥工业大学汽车与交通工程学院,合肥 230009
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精密铸铝及钢制仪表板横梁实物对比, figureFileSmall=T7siKOzdqfhzRKRfKSf50Q==, figureFileBig=1VZftCYLZP1hK951ytWpVQ==, tableContent=null), ArticleFig(id=1170305325237284889, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780539858342061, language=EN, label=null, caption=null, figureFileSmall=UZSWaeZyHQUjPgUtaC79NA==, figureFileBig=KMKQHKU0AQHW2IcLPJKwnQ==, tableContent=null), ArticleFig(id=1170305325308588058, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780539858342061, language=CN, label=图10, caption=
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弯曲工况边界条件, figureFileSmall=eZCgn0MECtPH9kiLG7t3AA==, figureFileBig=sTuSBsaMZB2syJLIgay8Ng==, tableContent=null), ArticleFig(id=1170305325757378591, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780539858342061, language=EN, label=null, caption=null, figureFileSmall=GBvcA7mJe3ut6xUvBx/CuQ==, figureFileBig=9tBW4Wd5ZSUVht3f5RSt5g==, tableContent=null), ArticleFig(id=1170305325874819104, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780539858342061, language=CN, label=图13, caption=
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白车身弯扭刚度试验, figureFileSmall=xumRseeU6AMBpH2kCa7XwQ==, figureFileBig=LwZPj1P5zFt2N05Pxw0PMA==, tableContent=null), ArticleFig(id=1170305326256500774, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780539858342061, language=EN, label=null, caption=null, figureFileSmall=ivX1RoYnv53GlNclB5mUaA==, figureFileBig=Ly3Fr49DveqBzQXEQseD+w==, tableContent=null), ArticleFig(id=1170305326373941288, tenantId=1146029695717560320, journalId=1146120084050784272, articleId=1153780539858342061, language=CN, label=图15, caption=
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| Cu | Si | Mn | Ti | Be | Ca |
| 4.90 | 0.03 | 0.40 | 0.21 | <0.01 | <0.01 |
| Cd | Zr | Ga | V | Fe | AL |
| 0.19 | 0.22 | <0.01 | 0.18 | 0.02 | 余量 |
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ZL205A合金的实际化学成分(质量分数) %
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| Cu | Si | Mn | Ti | Be | Ca |
| 4.90 | 0.03 | 0.40 | 0.21 | <0.01 | <0.01 |
| Cd | Zr | Ga | V | Fe | AL |
| 0.19 | 0.22 | <0.01 | 0.18 | 0.02 | 余量 |
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| 材料 | 密度/ (kg·mm-3) | 泊松比 | 弹性模量/MPa | 屈服强度/MPa | 延伸率/% |
| ZL205A | 2.82×10-6 | 0.32 | 73 000 | 409 | 7 |
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ZL205A合金的材料属性
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| 材料 | 密度/ (kg·mm-3) | 泊松比 | 弹性模量/MPa | 屈服强度/MPa | 延伸率/% |
| ZL205A | 2.82×10-6 | 0.32 | 73 000 | 409 | 7 |
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| 序号 | 制动工况A | 倒车工况B | 垂向工况C | 转弯工况D | 单轮跳动工况E |
| 1 | 0.10 | 0.10 | 0.20 | 0.30 | 0.30 |
| 2 | 0.20 | 0.25 | 0.15 | 0.15 | 0.25 |
| 3 | 0.30 | 0.20 | 0.10 | 0.20 | 0.20 |
| 4 | 0.35 | 0.20 | 0.20 | 0.10 | 0.15 |
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正交试验各因素及水平
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| 序号 | 制动工况A | 倒车工况B | 垂向工况C | 转弯工况D | 单轮跳动工况E |
| 1 | 0.10 | 0.10 | 0.20 | 0.30 | 0.30 |
| 2 | 0.20 | 0.25 | 0.15 | 0.15 | 0.25 |
| 3 | 0.30 | 0.20 | 0.10 | 0.20 | 0.20 |
| 4 | 0.35 | 0.20 | 0.20 | 0.10 | 0.15 |
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| 试验 序号 | 试验因素 | 加权柔度值 |
| A | B | C | D | E | C(x) |
| 1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.3 | 0.094 5 |
| 2 | 0.111 | 0.278 | 0.167 | 0.167 | 0.278 | 0.084 5 |
| 3 | 0.125 | 0.25 | 0.125 | 0.25 | 0.25 | 0.091 2 |
| 4 | 0.133 | 0.267 | 0.267 | 0.133 | 0.2 | 0.110 8 |
| 5 | 0.25 | 0.125 | 0.188 | 0.25 | 0.188 | 0.111 2 |
| 6 | 0.211 | 0.263 | 0.211 | 0.105 | 0.211 | 0.099 8 |
| 7 | 0.174 | 0.174 | 0.174 | 0.261 | 0.217 | 0.068 2 |
| 8 | 0.211 | 0.211 | 0.109 | 0.158 | 0.316 | 0.112 1 |
| 9 | 0.353 | 0.118 | 0.118 | 0.118 | 0.294 | 0.092 7 |
| 10 | 0.24 | 0.2 | 0.16 | 0.16 | 0.24 | 0.103 6 |
| 11 | 0.3 | 0.2 | 0.2 | 0.15 | 0.15 | 0.099 3 |
| 12 | 0.261 | 0.174 | 0.13 | 0.261 | 0.174 | 0.097 5 |
| 13 | 0.35 | 0.1 | 0.2 | 0.15 | 0.2 | 0.112 8 |
| 14 | 0.304 | 0.217 | 0.087 | 0.261 | 0.13 | 0.099 2 |
| 15 | 0.318 | 0.182 | 0.136 | 0.091 | 0.273 | 0.089 5 |
| 16 | 0.292 | 0.167 | 0.167 | 0.167 | 0.208 | 0.105 2 |
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正交试验结果
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| 试验 序号 | 试验因素 | 加权柔度值 |
| A | B | C | D | E | C(x) |
| 1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.3 | 0.094 5 |
| 2 | 0.111 | 0.278 | 0.167 | 0.167 | 0.278 | 0.084 5 |
| 3 | 0.125 | 0.25 | 0.125 | 0.25 | 0.25 | 0.091 2 |
| 4 | 0.133 | 0.267 | 0.267 | 0.133 | 0.2 | 0.110 8 |
| 5 | 0.25 | 0.125 | 0.188 | 0.25 | 0.188 | 0.111 2 |
| 6 | 0.211 | 0.263 | 0.211 | 0.105 | 0.211 | 0.099 8 |
| 7 | 0.174 | 0.174 | 0.174 | 0.261 | 0.217 | 0.068 2 |
| 8 | 0.211 | 0.211 | 0.109 | 0.158 | 0.316 | 0.112 1 |
| 9 | 0.353 | 0.118 | 0.118 | 0.118 | 0.294 | 0.092 7 |
| 10 | 0.24 | 0.2 | 0.16 | 0.16 | 0.24 | 0.103 6 |
| 11 | 0.3 | 0.2 | 0.2 | 0.15 | 0.15 | 0.099 3 |
| 12 | 0.261 | 0.174 | 0.13 | 0.261 | 0.174 | 0.097 5 |
| 13 | 0.35 | 0.1 | 0.2 | 0.15 | 0.2 | 0.112 8 |
| 14 | 0.304 | 0.217 | 0.087 | 0.261 | 0.13 | 0.099 2 |
| 15 | 0.318 | 0.182 | 0.136 | 0.091 | 0.273 | 0.089 5 |
| 16 | 0.292 | 0.167 | 0.167 | 0.167 | 0.208 | 0.105 2 |
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| 工况 | A | B | C | D | E |
| 权重系数 | 0.1 | 0.2 | 0.15 | 0.3 | 0.25 |
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前副车架静态工况权重表
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| 工况 | A | B | C | D | E |
| 权重系数 | 0.1 | 0.2 | 0.15 | 0.3 | 0.25 |
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| 工况 | 制动 | 倒车 | 垂向 | 转弯 | 单轮跳动 |
| 应力/MPa | 183.8 | 164.4 | 36.47 | 130.3 | 133.2 |
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前副车架强度分析结果
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| 工况 | 制动 | 倒车 | 垂向 | 转弯 | 单轮跳动 |
| 应力/MPa | 183.8 | 164.4 | 36.47 | 130.3 | 133.2 |
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| 铸铝件 | 振型描述 | 频率/Hz | 设计目标频率/Hz |
| 前副车架 | 1阶扭转 | 65.2 | 60 |
| 1阶弯曲 | 205.0 | 180 |
| 仪表板横梁 | 1阶扭转 | 51.23 | 45 |
| 1阶弯曲 | 62.45 | 60 |
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精密铸铝件模态频率仿真结果
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| 铸铝件 | 振型描述 | 频率/Hz | 设计目标频率/Hz |
| 前副车架 | 1阶扭转 | 65.2 | 60 |
| 1阶弯曲 | 205.0 | 180 |
| 仪表板横梁 | 1阶扭转 | 51.23 | 45 |
| 1阶弯曲 | 62.45 | 60 |
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| 构件 | 振型描述 | 仿真频率/Hz | 试验频率/Hz | 设计目标频率/Hz |
| 前副车架 | 1阶扭转 | 65.2 | 64.0 | 60 |
| 1阶弯曲 | 205.0 | 199.1 | 180 |
| 仪表板横梁 | 1阶扭转 | 51.23 | 50.6 | 45 |
| 1阶弯曲 | 62.45 | 63.10 | 60 |
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精密铸铝件模态频率试验结果
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| 构件 | 振型描述 | 仿真频率/Hz | 试验频率/Hz | 设计目标频率/Hz |
| 前副车架 | 1阶扭转 | 65.2 | 64.0 | 60 |
| 1阶弯曲 | 205.0 | 199.1 | 180 |
| 仪表板横梁 | 1阶扭转 | 51.23 | 50.6 | 45 |
| 1阶弯曲 | 62.45 | 63.10 | 60 |
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| 对比项 | 前副车架 | 仪表板横梁 |
| 精密铸铝件 | 钢制件 | 优化率 | 精密铸铝件 | 钢制件 | 优化率 |
| 质量/kg | 10.2 | 16.1 | 36.6% | 5.6 | 8.1 | 30.8% |
| 零件数量 | 1 | 6 | 83.3% | 1 | 24 | 95.8% |
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精密铸铝件与钢制件轻量化对比结果
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| 对比项 | 前副车架 | 仪表板横梁 |
| 精密铸铝件 | 钢制件 | 优化率 | 精密铸铝件 | 钢制件 | 优化率 |
| 质量/kg | 10.2 | 16.1 | 36.6% | 5.6 | 8.1 | 30.8% |
| 零件数量 | 1 | 6 | 83.3% | 1 | 24 | 95.8% |
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| 对比项 | 前副车架 | 仪表板横梁 |
| 精密铸铝件 | 钢制件 | 优化率 | 精密铸铝件 | 钢制件 | 优化率 |
| 模具数量/副 | 1 | 5 | 80.0% | 1 | 21 | 95.2% |
| 研发成本/万元 | 13.8 | 68 | 79.7% | 28.8 | 512 | 94.4% |
| 研制周期/天 | 90 | 280 | 67.8% | 90 | 280 | 67.8% |
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精密铸铝件与钢制件研发成本及周期对比结果
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| 对比项 | 前副车架 | 仪表板横梁 |
| 精密铸铝件 | 钢制件 | 优化率 | 精密铸铝件 | 钢制件 | 优化率 |
| 模具数量/副 | 1 | 5 | 80.0% | 1 | 21 | 95.2% |
| 研发成本/万元 | 13.8 | 68 | 79.7% | 28.8 | 512 | 94.4% |
| 研制周期/天 | 90 | 280 | 67.8% | 90 | 280 | 67.8% |
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| 长×宽×高/mm | 轴距/mm | 前/后轮距/mm |
| 4100×1740×1630 | 2 510 | 1 460/1 460 |
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白车身尺寸参数
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| 长×宽×高/mm | 轴距/mm | 前/后轮距/mm |
| 4100×1740×1630 | 2 510 | 1 460/1 460 |
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| 材料 | 弹性模量/MPa | 泊松比 | 密度/ (t·mm-3) |
| ZL205A铝合金 | 7.3E4 | 0.32 | 2.82×10-9 |
| 钢材 | 2.1E5 | 0.3 | 7.85×10-9 |
| 粘胶 | 2 000 | 0.41 | 1.07×10-9 |
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白车身材料参数
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| 材料 | 弹性模量/MPa | 泊松比 | 密度/ (t·mm-3) |
| ZL205A铝合金 | 7.3E4 | 0.32 | 2.82×10-9 |
| 钢材 | 2.1E5 | 0.3 | 7.85×10-9 |
| 粘胶 | 2 000 | 0.41 | 1.07×10-9 |
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| 性能 | 加装钢制件白车身 | 加装精密铸铝件白车身 | 设计要求 |
| 弯曲刚度/(N·m-1) | 16 557.3 | 16 765.9 | ≥13 000 |
| 扭转刚度/(N·m·(°)-1) | 16 891.4 | 17 118.7 | ≥12 200 |
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白车身刚度结果
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| 性能 | 加装钢制件白车身 | 加装精密铸铝件白车身 | 设计要求 |
| 弯曲刚度/(N·m-1) | 16 557.3 | 16 765.9 | ≥13 000 |
| 扭转刚度/(N·m·(°)-1) | 16 891.4 | 17 118.7 | ≥12 200 |
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| 性能 | 加装钢制件白车身 | 加装精密铸铝件白车身 | 设计要求 |
| 1阶弯曲模态频率/Hz | 49.66 | 52.94 | ≥50 |
| 1阶扭转模态频率/Hz | 36.87 | 40.16 | ≥40 |
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白车身模态频率结果
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| 性能 | 加装钢制件白车身 | 加装精密铸铝件白车身 | 设计要求 |
| 1阶弯曲模态频率/Hz | 49.66 | 52.94 | ≥50 |
| 1阶扭转模态频率/Hz | 36.87 | 40.16 | ≥40 |
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| 性能 | 试验 | 设计要求 |
| 弯曲刚度/(N·m-1) | 16 533.3 | ≥13 000 |
| 扭转刚度/(N·m·(°)-1) | 17 212.2 | ≥12 200 |
| 1阶弯曲模态频率/Hz | 53.6 | ≥50 |
| 1阶扭转模态频率/Hz | 41.2 | ≥40 |
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加装精密铸铝件白车身刚度与模态性能
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| 性能 | 试验 | 设计要求 |
| 弯曲刚度/(N·m-1) | 16 533.3 | ≥13 000 |
| 扭转刚度/(N·m·(°)-1) | 17 212.2 | ≥12 200 |
| 1阶弯曲模态频率/Hz | 53.6 | ≥50 |
| 1阶扭转模态频率/Hz | 41.2 | ≥40 |
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