The Strength Analysis Methods of FRP Composite Laminates

Abstract

In order to predict the strength of FRP composite laminates, the finite element software ABAQUS user-defined subroutine usdfld and UMAT were developed based on the phenomenological analysis method and continuum damage theory, and the 3D solid models of FRP composite laminates were established. The uniaxial tensile and compressive strength analysis were performed respectively. The finite element results and experimental results were compared and analyzed. Results show that: the uniaxial tensile strength can be predicted accurately based on the phenomenological analysis method, while for the uniaxial compression strength the error is bigger; based on continuum damage theory, uniaxial compression strength can be predicted more accurately.