Effect of variable fiber spacing on buckling strength of composite plates

Abstract EN

This paper explores the idea of tailoring the profile of reinforcing fibers to improving buckling strength of composite plates.

This paper analyzes the uniaxial buckling behavior of composite laminates with variable fiber spacing using eight node iso parametric finite element methods.

The present investigation is limited to single layer composites having parallel fibers.

The non uniform spacing fiber results in variable elastic stiffness and non uniform pre buckling stress field, which are shown to have a pronounced influence on the buckling strength.

Numerical results are obtained for seven non uniform distributions E-glass fibers in epoxy matrix in rectangular plates with types of boundary condition, and range of aspect ratio.

The redistributions are seen to increase the buckling load by as much as 75 % for proposed distribution equation.