Stress analysis is a field of engineering and physics that focuses on understanding how materials and structures respond to applied forces or loads. By analyzing the levels of stress within a material or structure, engineers can predict how likely it is to deform, break, or fail under different conditions. This information is crucial for designing safe and durable products, buildings, machines, and infrastructure. Stress analysis incorporates principles from mechanics, materials science, and computer simulation to assess the strength, stiffness, and stability of various components in a variety of applications.