| WANG Wen-bo,QI Wen-kai,SHEN Cheng.Research on Damping Characteristic of Composite Laminated Plates Considering Shear Effect[J].航空发动机,2018,44(3):60-64 |
| Research on Damping Characteristic of Composite Laminated Plates Considering Shear Effect |
| DOI： |
| Key Words:Hencky plate / shell theory composite laminated plates finite element specific damping capacity |
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| Abstract:To optimize the composite structure design model, based on the Hencky hypothesis,the finite element analysis model of the
composite laminated plates was established considering the influence of shear stress. The three-phase bridge model was improved from the
angle of micromechanics,the energy loss factor was predicted,the natural frequency of the composite laminated plates,vibration
parameters such as vibration mode and specific damping capacity were obtained. Taking the carbon fiber laminated plates for example,the
calculation results were compared with the existing literatures,and the correctness of the improved model was verified. The analysis results
of rectangular laminated plates show that,both length and width changes of the composite laminated plates,clamped on one side, has a
slight influence on the natural frequency of the first order; the fourth and fifth orders tend to common frequency, and the vibration mode has
the same variation tendency; while results of the sixth order mode show contrary logarithm varying trajectory as the length and width change. |
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