| An Optimum Analysis Method of Sandwich Structures Made from Elastic-viscoelastic Materials |
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| 作者姓名： | CHENYing-bo XIAYu RENZhi-gang LUZhe-an WANGEr-lei |
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| 作者单位： | [1]WuhanUniversityofTechnology [2]WenzhouUniversity |
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| 基金项目： | FundedbytheNationalNaturalScienceFoundationofChi na(No.5 0 2 0 80 16 ) |
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| 摘 要： | Due to a viscoelastic damping middler, saudwich structures have the capacity of energy consumption. In this paper, we describe the frequency-dependent property of viscoelastic materials using complex modudus model, and iterative modal strain energy method and iterative complex eigetwalue method are presented to obtain frequency and loss factor of sandwich structures. The two nethods are effective and exact for the large-scale complex composite sandwich structures. Then an optimum analysis method is suggested to apply to sandwich struc-tures. Finally, as an example.an optimum analysis of a clamped-clouted sandwich beams is conducted, theoretical closed-form solution and munerical predictions are studied comparatively, and the results agree well.
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| 关 键 词： | 优化分析 粘弹性材料 夹层结构 损耗因子 混合系数模型 |
An optimum analysis method of sandwich structures made from elastic-viscoelastic materials |
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| CHENYing-bo XIAYu RENZhi-gang LUZhe-an WANGEr-lei.An Optimum Analysis Method of Sandwich Structures Made from Elastic-viscoelastic Materials[J].Journal of Wuhan University of Technology. Materials Science Edition,2004,19(2):76-78. |
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| Authors: | Chen Ying-bo Xia Yu Ren Zhi-gang Lu Zhe-an Wang Er-lei |
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| Affiliation: | CHEN Ying-bo~(1)) XIA Yu~(2)) REN Zhi-gang~(1)) LU Zhe-an~(1)) WANG Er-lei~(1))()~(1))Wuhan University of Technology;()~(2))Wenzhou University |
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| Abstract: | Due to a viscoelastic damping middle layer,sandwich structures have the capacity of energy consumption.In this paper,we describe the frequency-dependent property of viscoelastic materials using complex modulus model,and iterative modal strain energy method and iterative complex eigenvalue method are presented to obtain frequency and loss factor of sandwich structures.The two methods are effective and exact for the large-scale complex composite sandwich structures.Then an optimum analysis method is suggested to apply to sandwich structures.Finally,as an example,an optimum analysis of a clamped-clamped sandwich beams is conducted,theoretical closed-form solution and numerical predictions are studied comparatively,and the results agree well. |
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| Keywords: | optimum analysis viscoelastic materials sandwich structures complex modulus model loss factor |
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