Finite Element Analysis (FEA) is a numerical method used to solve complex engineering problems by breaking down structures into smaller, manageable parts called finite elements. This technique allows engineers to predict how structures will respond to various forces, such as stress and strain, under different conditions. By using FEA, engineers can optimize designs, improve safety, and reduce costs. It is widely applied in fields like Aerospace, Automotive, and Civil Engineering, enabling the analysis of everything from bridges to aircraft components, ensuring they meet performance and safety standards.