Free vibration analysis of thick laminated plates using a mixed finite element |
| |
Authors: | Chih‐Ping Wu Chih‐Shun Hsu |
| |
Affiliation: | Department of Civil Engineering , National Cheng Kung University , Tainan, Taiwan 701, R.O.C. |
| |
Abstract: | Abstract A mixed finite element scheme based on assumed local high‐order displacements is proposed for the free vibration of thick laminated plates. The effects of transverse shear deformation, transverse normal stress and rotary inertia are considered in the formulation. Cross‐ply laminates with simple supports and angle‐ply laminates with clamped edges are presented as examples. The three dimensional elasticity solutions of cross‐ply laminates with simple supports are used to assess the accuracy of the present scheme. The effects of the span‐to‐thickness, aspect and material anisotropy ratio on the fundamental natural frequency are investigated. The present results are compared with the results in the published literature, and agree closely with the 3‐D elasticity solutions. |
| |
Keywords: | mixed finite element method free vibration laminated plates |
|
|