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| Stability analysis of composite laminated Reddy plate based on new modified couple-stress theory |
| Received:December 24, 2015 Revised:April 05, 2016 |
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| DOI：10.7511/jslx201702006 |
| KeyWord:new modified couple stress theory Laminated Reddy plate material length scale parameters scale effect stability analysis |
| Author | Institution |
| 陈万吉 |
沈阳航空航天大学 辽宁省飞行器复合材料结构分析与仿真重点实验室 沈阳 |
| 薛继伟 |
沈阳航空航天大学 辽宁省飞行器复合材料结构分析与仿真重点实验室 沈阳 |
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| Abstract: |
| In this paper, a model of composite laminated Reddy plate is established based on the new modified couple stress theory which contains asymmetric curvature tensor and symmetry couple stress tensor for stability analysis. The model of composite laminated Reddy plate can satisfy the free surface condition. At the same time, the transverse shear stress shows a quadratic parabola distribution without the correction factor which introduced in First-Order Shear Deformation Theory. For the convenience of engineering application, the stability equation of cross-ply composite laminated Reddy plate which merely involves the material length scale parameter of fiber derived by means of the virtual work principle. Moreover, a simply supported cross-ply composited laminated simple square plate is used to analyse the scale effect with different angle-plies and axial loads and the results are compared with the results from Mindlin and Kirchhoff plate theories. Numerical results show that the present model is more appropriate for capturing scale effects in the stability analysis of thicker composite laminated plate. |