Numerical Analysis of Stress Concentration in Composite Plates With Triangular Holes

Geometric singularities in composite panels play a crucial role in industrial applications. This study focuses on analyzing the mechanical behavior of orthotropic composite laminates containing a centrally located triangular hole, with the primary objective of investigating the stress concentration factor (SCF) under tensile loading along the plate's longitudinal direction. Particular emphasis is placed on stress distribution near the triangular hole's vertices. The study examines multiple composite materials and evaluates key parameters influencing SCF, including the fiber orientation angle (θ) and the triangular hole rotation angle (β) relative to the tensile force direction. Through numerical analysis, we assess how these factors affect stress concentration, providing insights for optimizing composite structures in engineering applications.