Analyzing Stress and Frequency Parameters of the Wind Turbine Composite Blade

This study comprehensively analyzes a composite wind turbine blade, designed to fulfill the increasing demand for renewable energy sources. Taking advantage from a mix of glass reinforced vinyl ester, PVC foam, and carbon–epoxy the blade is produced with a sandwich structure that optimizes both lightness and strength. The primary objective is to estimate the dynamic response and structural integrity of the blades within operational conditions. A detailed stress analysis is conducted to evaluate the blade’s performance when subjected to gravitational and centrifugal loads, focusing on tip displacement, maximum stress values, and stress distribution through the blade’s thickness under various load scenarios. Subsequently, a prestressed eigenfrequency analysis is performed across a spectrum of operating speeds to identify potential vibrational issues. The results are illustrated in a Campbell diagram, which plots the blade’s eigenfrequencies against its rotation speed, providing important insight into the structural dynamics and stability of the wind turbine blades. This analysis is crucial for optimizing the design and ensuring the durability and efficiency of wind turbines in harnessing renewable energy.