Spring design refers to the process of creating and optimizing the mechanical properties of springs, which are devices that store and release energy. Springs can be found in various applications, from simple toys to complex machinery. The design involves selecting materials, determining dimensions, and calculating the spring constant to ensure the spring performs as intended. Key factors in spring design include load capacity, deflection, and fatigue life. Engineers often use computer-aided design (CAD) software to simulate spring behavior under different conditions. Proper spring design is crucial for ensuring safety and functionality in products like automobiles, electronics, and industrial equipment.