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Aiming at the vibration fatigue problem of the battery box of electric vehicles, based on the test loads in the real vehicle test field, the fatigue performance of the battery box was compared and analyzed based on single-axis and multi-axis (sequential loading, coupled loading) vibration loads. Firstly, the three-directional acceleration loads were collected at the sensitive points on the battery box in the test field. The power spectral densities were fitted and compared in the same direction of the loads at different measurement points respectively, and the power spectral densities were accelerated through the frequency-domain damage equivalence method to obtain the distribution characteristics of the random vibration three-directional acceleration power spectral densities under the test field specification. Secondly, based on the theory of random vibration fatigue analysis, the multi-axis sequential excitation and multi-axis coupled excitation of the battery box were constructed. Based on fatigue damage equivalence, a uniaxial strengthening spectrum excitation was constructed. Finally, the fatigue damage of the battery box under three kinds of excitation was compared and analyzed by the numerical simulation.The results show that the damage locations of the battery box are consistent under the three excitations. The damage under multi-axis coupled excitation is greater than that under multi-axis sequential excitation, and the single-axis enhancement spectrum has a better reproduction effect on the multi-axis coupled damage. This can provide guidance for conducting rapid vibration fatigue tests of battery boxes based on uniaxial enhanced load spectra.
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针对电动汽车电池箱的振动疲劳问题,以实车试验场测试载荷为基础,基于单轴和多轴(顺序加载、耦合加载)振动载荷,对比分析电池箱疲劳性能。首先,在试验场采集电池箱上敏感点处的三向加速度载荷,对不同测点载荷同一方向的功率谱密度分别进行拟合与对比分析,并通过频域损伤等效方法对功率谱密度进行加速处理,获得试验场规范下的随机振动三向加速度功率谱密度分布特征。其次,基于随机振动疲劳分析理论,构建了电池箱的多轴顺序激励、多轴耦合激励;基于疲劳损伤等效,构建了单轴强化谱激励。最后,数值仿真对比分析了三种激励下电池箱的疲劳损伤。结果表明,三种激励下电池箱的损伤位置一致,多轴耦合激励损伤大于多轴顺序激励,单轴强化谱对多轴耦合损伤的复现效果较好。这可为基于单轴强化载荷谱开展电池箱的振动疲劳快速试验提供指导。
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赵礼辉,男,1985年生,山东青岛人,博士,副教授,硕士研究生导师;主要研究方向为车辆强度可靠性设计与评价、车辆载荷特征建模与快速试验;E-mail:Pheigoe@126.com。
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1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai 200093, China
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1.上海理工大学 机械工程学院,上海 200093
2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093
3.上海市新能源汽车可靠性评价专业技术服务平台,上海 200093, bio={"content":"
赵礼辉,男,1985年生,山东青岛人,博士,副教授,硕士研究生导师;主要研究方向为车辆强度可靠性设计与评价、车辆载荷特征建模与快速试验;E-mail:Pheigoe@126.com。
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赵礼辉,男,1985年生,山东青岛人,博士,副教授,硕士研究生导师;主要研究方向为车辆强度可靠性设计与评价、车辆载荷特征建模与快速试验;E-mail:Pheigoe@126.com。
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1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai 200093, China
3.Shanghai Technical Service Platform for Reliability Evaluation of New Energy Vehicles, Shanghai 200093, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241446349921636901, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, authorId=1241446349653201435, language=CN, stringName=冯金芝, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.上海理工大学 机械工程学院,上海 200093
2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093
3.上海市新能源汽车可靠性评价专业技术服务平台,上海 200093, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241446348701094373, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, xref=1., ext=[AuthorCompanyExt(id=1241446348705288678, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, companyId=1241446348701094373, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1, 2, 3, address=
1.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai 200093, China
3.Shanghai Technical Service Platform for Reliability Evaluation of New Energy Vehicles, Shanghai 200093, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241446350211043894, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, authorId=1241446350001328684, language=CN, stringName=郑松林, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.上海理工大学 机械工程学院,上海 200093
2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093
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2.机械工业汽车机械零部件强度与可靠性评价重点实验室,上海 200093)]), AuthorCompany(id=1241446348864672242, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, xref=3., ext=[AuthorCompanyExt(id=1241446348877255155, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, companyId=1241446348864672242, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.上海市新能源汽车可靠性评价专业技术服务平台,上海 200093)])], figs=[ArticleFig(id=1241446353075753585, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 1, caption=
Structural model of the power battery box, figureFileSmall=uNc/f6ffXlDgqWDKZeMMtg==, figureFileBig=Y8Qmn57rXl1Cyvg1ENvNNA==, tableContent=null), ArticleFig(id=1241446353147056756, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图1, caption=
动力电池箱结构模型, figureFileSmall=uNc/f6ffXlDgqWDKZeMMtg==, figureFileBig=Y8Qmn57rXl1Cyvg1ENvNNA==, tableContent=null), ArticleFig(id=1241446353373549178, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 2, caption=
Finite element model of the battery box, figureFileSmall=VI6/yTZVqYIYt8XscbE0Xw==, figureFileBig=1TLQONjG44VbVo7tVKjivw==, tableContent=null), ArticleFig(id=1241446353449046653, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图2, caption=
电池箱有限元模型, figureFileSmall=VI6/yTZVqYIYt8XscbE0Xw==, figureFileBig=1TLQONjG44VbVo7tVKjivw==, tableContent=null), ArticleFig(id=1241446353520349825, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 3, caption=
S-N curve of materials of the battery box, figureFileSmall=hfAwlJkaq91dpM6YOmBb1Q==, figureFileBig=5NzwBanE5dEUhmXZyDNcsQ==, tableContent=null), ArticleFig(id=1241446353595847302, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图3, caption=
电池箱体材料S-N曲线, figureFileSmall=hfAwlJkaq91dpM6YOmBb1Q==, figureFileBig=5NzwBanE5dEUhmXZyDNcsQ==, tableContent=null), ArticleFig(id=1241446353683927689, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 4, caption=
Test vehicle for the load acquisition, figureFileSmall=aU5t9mSTv0NybFPRmNBE7Q==, figureFileBig=yhVOPYOT/LxTPAskONERRQ==, tableContent=null), ArticleFig(id=1241446353776202380, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图4, caption=
载荷采集试验车辆, figureFileSmall=aU5t9mSTv0NybFPRmNBE7Q==, figureFileBig=yhVOPYOT/LxTPAskONERRQ==, tableContent=null), ArticleFig(id=1241446353910420111, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 5, caption=
Layout of the left rear acceleration sensor of the battery box, figureFileSmall=Td8ZMAFUFWtV5za1avHZsA==, figureFileBig=t9FA2ug50kpXp8kDOSCwtw==, tableContent=null), ArticleFig(id=1241446354036249235, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图5, caption=
电池箱左后加速度传感器布置, figureFileSmall=Td8ZMAFUFWtV5za1avHZsA==, figureFileBig=t9FA2ug50kpXp8kDOSCwtw==, tableContent=null), ArticleFig(id=1241446354107552406, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 6, caption=
Three-direction acceleration load at the left front measuring point of the battery box, figureFileSmall=WO67/MeINzB+Dul7MDYfoQ==, figureFileBig=CeM744eOMnU37s7wXGze8A==, tableContent=null), ArticleFig(id=1241446354237575833, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图6, caption=
电池箱左前测点三向加速度载荷, figureFileSmall=WO67/MeINzB+Dul7MDYfoQ==, figureFileBig=CeM744eOMnU37s7wXGze8A==, tableContent=null), ArticleFig(id=1241446354329850524, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 7, caption=
PSD of x-direction, figureFileSmall=tyXY5pyxdue+nLu3mZqWpQ==, figureFileBig=xQsw70kQvXabPM/eyxOrEQ==, tableContent=null), ArticleFig(id=1241446354438902432, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图7, caption=
x向功率谱密度, figureFileSmall=tyXY5pyxdue+nLu3mZqWpQ==, figureFileBig=xQsw70kQvXabPM/eyxOrEQ==, tableContent=null), ArticleFig(id=1241446354535371427, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 8, caption=
PSD of y-direction, figureFileSmall=2/wd8DM5u7lnhp6emoAWYw==, figureFileBig=FhGzm4UdKeYm8PpSQTZZpA==, tableContent=null), ArticleFig(id=1241446354657006246, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图8, caption=
y向功率谱密度, figureFileSmall=2/wd8DM5u7lnhp6emoAWYw==, figureFileBig=FhGzm4UdKeYm8PpSQTZZpA==, tableContent=null), ArticleFig(id=1241446354745086632, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 9, caption=
PSD of z-direction, figureFileSmall=3BR942eGip6NQYoiVWBwNA==, figureFileBig=tKtWTAz5n5VjY+dOhHrf+A==, tableContent=null), ArticleFig(id=1241446354820584107, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图9, caption=
z向功率谱密度, figureFileSmall=3BR942eGip6NQYoiVWBwNA==, figureFileBig=tKtWTAz5n5VjY+dOhHrf+A==, tableContent=null), ArticleFig(id=1241446354900275886, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 10, caption=
Goodness of the fit test for PSD, figureFileSmall=gQwGeJX/KzOzC74byq6BuQ==, figureFileBig=0okCjNxBF7Rojnt9odPhBA==, tableContent=null), ArticleFig(id=1241446355143545521, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图10, caption=
PSD拟合优度检验, figureFileSmall=gQwGeJX/KzOzC74byq6BuQ==, figureFileBig=0okCjNxBF7Rojnt9odPhBA==, tableContent=null), ArticleFig(id=1241446355273568948, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 11, caption=
PSD distribution fitting at 10 Hz, figureFileSmall=FzSABCJyA4SoSqlx7W0umA==, figureFileBig=xuQS99nMNi6QD7hSJj3ycQ==, tableContent=null), ArticleFig(id=1241446355344872119, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图11, caption=
10 Hz处的PSD分布拟合, figureFileSmall=FzSABCJyA4SoSqlx7W0umA==, figureFileBig=xuQS99nMNi6QD7hSJj3ycQ==, tableContent=null), ArticleFig(id=1241446355432952505, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 12, caption=
PSD of acceleration in three directions of the load at the test site, figureFileSmall=vNXOjEnKOsHHDwT19qMAhQ==, figureFileBig=9tb8enpjDwA+gquuA5I4fw==, tableContent=null), ArticleFig(id=1241446358809367228, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图12, caption=
试验场载荷三个方向加速度功率谱密度, figureFileSmall=vNXOjEnKOsHHDwT19qMAhQ==, figureFileBig=9tb8enpjDwA+gquuA5I4fw==, tableContent=null), ArticleFig(id=1241446358897447614, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 13, caption=
Analysis process of the equivalent PSD, figureFileSmall=FbNissz9y09HsrRtRJy7AA==, figureFileBig=1ewSPuOvIO02GyvLOe9h/Q==, tableContent=null), ArticleFig(id=1241446359010693825, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图13, caption=
等效PSD分析流程, figureFileSmall=FbNissz9y09HsrRtRJy7AA==, figureFileBig=1ewSPuOvIO02GyvLOe9h/Q==, tableContent=null), ArticleFig(id=1241446359086191300, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 14, caption=
PSD of the 12 h equivalent acceleration of the battery box, figureFileSmall=SNTx9ru1x7GWxjcGRNKp2A==, figureFileBig=2XLsxLsc+C4uCP2FrUwKsg==, tableContent=null), ArticleFig(id=1241446359161688775, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图14, caption=
电池箱12 h等效加速度功率谱密度, figureFileSmall=SNTx9ru1x7GWxjcGRNKp2A==, figureFileBig=2XLsxLsc+C4uCP2FrUwKsg==, tableContent=null), ArticleFig(id=1241446359245574858, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 15, caption=
Comparison of PSD spectrums before and after z-axis acceleration, figureFileSmall=q1mURLTO65tfe4woUcBz5Q==, figureFileBig=+3j3AXIRA25s6SYmw6T3wQ==, tableContent=null), ArticleFig(id=1241446359337849549, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图15, caption=
z轴加速前、后功率谱密度谱对比, figureFileSmall=q1mURLTO65tfe4woUcBz5Q==, figureFileBig=+3j3AXIRA25s6SYmw6T3wQ==, tableContent=null), ArticleFig(id=1241446359409152720, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 16, caption=
Comparison of limit response spectrums between the original spectrum and the accelerated spectrum, figureFileSmall=SYGxNK93AvdEGC/5C3V6Nw==, figureFileBig=6wl50y8rwfSgAm4+APmEhw==, tableContent=null), ArticleFig(id=1241446359476261587, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图16, caption=
原始谱和加速谱极限响应谱对比, figureFileSmall=SYGxNK93AvdEGC/5C3V6Nw==, figureFileBig=6wl50y8rwfSgAm4+APmEhw==, tableContent=null), ArticleFig(id=1241446359543370454, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 17, caption=
Comparison between the original spectrum shock response spectrum and the accelerated spectrum limit response spectrum, figureFileSmall=yVpgY7Hoh+rYZkE6oXMgLA==, figureFileBig=OglR5G1GIVvXmXX966ZbXg==, tableContent=null), ArticleFig(id=1241446359656616664, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图17, caption=
原始谱冲击响应谱与加速谱极限响应谱对比, figureFileSmall=yVpgY7Hoh+rYZkE6oXMgLA==, figureFileBig=OglR5G1GIVvXmXX966ZbXg==, tableContent=null), ArticleFig(id=1241446359736308441, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 18, caption=
Analysis process of the multi-axis sequential fatigue damage, figureFileSmall=928W6qGkycttwP3FfDwCZw==, figureFileBig=93Y0OtIQl5fM1mJwhmx35A==, tableContent=null), ArticleFig(id=1241446359807611611, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图18, caption=
多轴顺序疲劳损伤分析流程, figureFileSmall=928W6qGkycttwP3FfDwCZw==, figureFileBig=93Y0OtIQl5fM1mJwhmx35A==, tableContent=null), ArticleFig(id=1241446359895691997, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 19, caption=
PSD matrix calculation of the battery box, figureFileSmall=gLCFrpUHZg/4qxnyCAgwHA==, figureFileBig=q4q+cZN/Qb7OAU+pYpPnnA==, tableContent=null), ArticleFig(id=1241446361409835743, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图19, caption=
电池箱功率谱密度矩阵计算, figureFileSmall=gLCFrpUHZg/4qxnyCAgwHA==, figureFileBig=q4q+cZN/Qb7OAU+pYpPnnA==, tableContent=null), ArticleFig(id=1241446361510499041, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 20, caption=
Multi-axis coupling vibration fatigue of the battery box, figureFileSmall=jhkyd9SLxrIMgtdPi3QVzA==, figureFileBig=tIPrnRm5/oAZWuSIjk8HYw==, tableContent=null), ArticleFig(id=1241446361602773731, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图20, caption=
电池箱多轴耦合振动疲劳, figureFileSmall=jhkyd9SLxrIMgtdPi3QVzA==, figureFileBig=tIPrnRm5/oAZWuSIjk8HYw==, tableContent=null), ArticleFig(id=1241446361703437029, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 21, caption=
Random vibration fatigue of x-axis, figureFileSmall=xeSJAxb8qO5uM6Rz9v9ubg==, figureFileBig=92nLgu2vW93x3um0HrRGiw==, tableContent=null), ArticleFig(id=1241446361808294631, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图21, caption=
x轴随机振动疲劳, figureFileSmall=xeSJAxb8qO5uM6Rz9v9ubg==, figureFileBig=92nLgu2vW93x3um0HrRGiw==, tableContent=null), ArticleFig(id=1241446361900569321, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 22, caption=
Random vibration fatigue of y-axis, figureFileSmall=XCSpuCssymyXO7vF+oJuFw==, figureFileBig=GSCr7JgF/MbxfyrHjCWf7Q==, tableContent=null), ArticleFig(id=1241446361988649707, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图22, caption=
y轴随机振动疲劳, figureFileSmall=XCSpuCssymyXO7vF+oJuFw==, figureFileBig=GSCr7JgF/MbxfyrHjCWf7Q==, tableContent=null), ArticleFig(id=1241446362152227565, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 23, caption=
Random vibration fatigue of z-axis, figureFileSmall=m70tJt/mUfx/Q64q5Oj11Q==, figureFileBig=VwZDCHyUGtd7j6HdzMHI9g==, tableContent=null), ArticleFig(id=1241446362240307951, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图23, caption=
z轴随机振动疲劳, figureFileSmall=m70tJt/mUfx/Q64q5Oj11Q==, figureFileBig=VwZDCHyUGtd7j6HdzMHI9g==, tableContent=null), ArticleFig(id=1241446362319999729, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Fig. 24, caption=
Acceleration test spectrum of z-axial, figureFileSmall=TgUQdG10KwwY/Z733pUS5A==, figureFileBig=5sTCz3zEXlI7kZyjCEDg/g==, tableContent=null), ArticleFig(id=1241446362382914291, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=图24, caption=
z轴向加速试验谱, figureFileSmall=TgUQdG10KwwY/Z733pUS5A==, figureFileBig=5sTCz3zEXlI7kZyjCEDg/g==, tableContent=null), ArticleFig(id=1241446362466800373, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Tab. 1, caption=
Mechanical property parameters of the 5052 aluminum alloy
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 弹性模量 Modulus of elasticity/MPa | 泊松比 Poisson ratio | 拉伸强度 Tensile strength/MPa | 屈服强度 Yield strength/MPa | 伸长率 Percentage elongation/% |
|---|
5052铝合金 5052 aluminum alloy | 69 000 | 0.3 | 228 | 193 | 12 |
), ArticleFig(id=1241446362550686455, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=表1, caption=
5052铝合金力学性能参数
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 弹性模量 Modulus of elasticity/MPa | 泊松比 Poisson ratio | 拉伸强度 Tensile strength/MPa | 屈服强度 Yield strength/MPa | 伸长率 Percentage elongation/% |
|---|
5052铝合金 5052 aluminum alloy | 69 000 | 0.3 | 228 | 193 | 12 |
), ArticleFig(id=1241446362626183929, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Tab. 2, caption=
Cycle times of partial pavements in the test endurance
, figureFileSmall=null, figureFileBig=null, tableContent=
| 典型路面Typical pavement | 循环次数Cycle time |
|---|
| 比利时路 Belgium road | 1 600 |
| 扭曲路 Twisting road | 320 |
| 卵石路 Cobbled road | 800 |
| 振动路 Vibration road | 1 200 |
| 坑洼路 Hollow road | 360 |
| 冲击路 Shock road | 80 |
), ArticleFig(id=1241446362718458619, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=表2, caption=
耐久试验部分路面循环次数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 典型路面Typical pavement | 循环次数Cycle time |
|---|
| 比利时路 Belgium road | 1 600 |
| 扭曲路 Twisting road | 320 |
| 卵石路 Cobbled road | 800 |
| 振动路 Vibration road | 1 200 |
| 坑洼路 Hollow road | 360 |
| 冲击路 Shock road | 80 |
), ArticleFig(id=1241446362789761789, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Tab. 3, caption=
Damage results under different excitation modes
, figureFileSmall=null, figureFileBig=null, tableContent=
激励方式 Incentive mode | 三轴耦合 Triaxial coupling | 三轴顺次 Triaxial sequence | z向 z-direction | y向 y-direction | x向 x-direction |
|---|
损伤值 Damage value | 0.182 | 0.047 | 0.033 | 4.9×10-9 | 5×10-5 |
), ArticleFig(id=1241446362882036480, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=表3, caption=
不同激励方式下损伤结果
, figureFileSmall=null, figureFileBig=null, tableContent=
激励方式 Incentive mode | 三轴耦合 Triaxial coupling | 三轴顺次 Triaxial sequence | z向 z-direction | y向 y-direction | x向 x-direction |
|---|
损伤值 Damage value | 0.182 | 0.047 | 0.033 | 4.9×10-9 | 5×10-5 |
), ArticleFig(id=1241446362999476994, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=EN, label=Tab. 4, caption=
Validation of accelerated spectrum damage effect
, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点编号Node number | 870 313 | 1 122 748 | 1 124 234 | 831 286 | 1 167 211 |
|---|
| z向单轴激励Uniaxial excitation of z‑direction | 0.033 | 0.023 | 0.015 | 0.007 1 | 0.006 2 |
| 三轴顺序激励损伤Triaxial sequential excitation damage | 0.047 | 0.032 | 0.021 | 0.010 | 0.008 6 |
| 三轴耦合激励损伤Triaxial coupling excitation damage | 0.182 | 0.102 | 0.058 | 0.027 | 0.035 |
| z轴强化谱激励损伤Intensification spectrum excitation damage of z‑axis | 0.188 | 0.116 | 0.064 | 0.031 | 0.028 |
), ArticleFig(id=1241446363070780164, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241446333471576125, language=CN, label=表4, caption=
加速谱损伤效果验证
, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点编号Node number | 870 313 | 1 122 748 | 1 124 234 | 831 286 | 1 167 211 |
|---|
| z向单轴激励Uniaxial excitation of z‑direction | 0.033 | 0.023 | 0.015 | 0.007 1 | 0.006 2 |
| 三轴顺序激励损伤Triaxial sequential excitation damage | 0.047 | 0.032 | 0.021 | 0.010 | 0.008 6 |
| 三轴耦合激励损伤Triaxial coupling excitation damage | 0.182 | 0.102 | 0.058 | 0.027 | 0.035 |
| z轴强化谱激励损伤Intensification spectrum excitation damage of z‑axis | 0.188 | 0.116 | 0.064 | 0.031 | 0.028 |
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