Effect of geometric parameters on free vibration analysis of thick fiber reinforced plastic (FRP) skew cross-ply laminate with circular cutout

International Journal of Physical Sciences

V. Bala Krishna Murthy¹ 

关键词: Fiber reinforced plastic (FRP);    finite element model (FEM);    skew plate;    cutout;    natural frequencies.;   

DOI  :  10.5897/IJPS12.640

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

The present investigation deals with the free vibration analysis of a thick four-layered symmetric cross-ply skew laminated composite plate with a circular cutout and clamped boundary conditions. Three dimensional finite element models (FEMs) which use the elasticity theory for the determination of stiffness matrices are modeled in ANSYS software to evaluate first five natural frequencies of the laminate. The variations of the first five natural frequencies with respect to the thickness ratio for different d/l ratios and skew angles are presented. It is observed that, the natural frequency decreases with increase in length to thickness ratio(s).

【 授权许可】

CC BY