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| Solving nature characteristics of coating composite structural considering frequency-dependence property of coating materials |
| Received:June 20, 2012 Revised:August 30, 2012 |
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| DOI：10.7511/jslx201306019 |
| KeyWord:frequency-dependence coating composite structure nature characteristics |
| Author | Institution |
| 孙伟 |
东北大学 机械工程与自动化学院, 沈阳 |
| 齐飞 |
中冶京诚工程技术有限公司, 北京 |
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| Abstract: |
| Mechanical parameters of viscoelastic damping materials will change with frequency,namely have frequency-dependent property,thus the traditional dynamics modeling and analysis methods are not satisfied with the requirement of optimization design of coating structure.On the basis of introducing the frequency-dependence property of visco-elastic damping materials,an efficient numerical method which is named as eigenvector increment method (EIM) is presented for analyzing the nature characteristics of coating composite structure in the paper.The theory of EIM is derived and relative solving flow chart is put forwards.The flow chart includes calculating the nature characteristics of undamped system,solving the complex eigenvector increment used Fox and Kapoor or Nelson method,acquiring the complex eigenvalues adapted Rayleigh quotient method.At last,a titanium thin plate coated visco-elastic damping layer is taken as study object,the nature characteristics are solved by EIM.The correctness of proposed method is proved,by comparing the results with the classical modal strain energy(MSE) method. |
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