Energieabsorbers

Energieabsorber, also known as energy absorbers, are devices or materials designed to dissipate, dampen, or store energy from mechanical loads, thereby reducing peak forces, accelerations, and damage to structures or components. They work by converting kinetic energy from impact or vibration into heat, deformation energy, or stored elastic energy in a controlled manner. Energieabsorbers can be passive, using intrinsic properties, or active, employing sensors and actuators to adjust performance in real time.

Common types include hydraulic or pneumatic dampers that convert energy through fluid flow or gas compression; viscoelastic materials that dampen motion via rate-dependent stiffness; friction-based devices that dissipate energy through sliding resistance; crushable or deformable elements that absorb energy by plastic deformation; tuned mass dampers and base isolators used in structures to reduce resonant motion; and regenerative absorbers that convert energy into electricity.

Performance is described by energy absorption capacity (EA), peak force, and stroke. The absorbed energy is the integral of force over displacement, and efficiency depends on how much energy is dissipated relative to the input. Design also considers operating range, temperature, wear, fatigue, and safety margins.

Applications span automotive shock absorbers, crash energy management in vehicles and protective equipment; aerospace landing gear and vibration isolation; civil engineering seismic dampers and base isolators; industrial machinery and robotics for controlled impacts; and sports or consumer products where impact protection is needed.

See also: damper, shock absorber, seismic damper, base isolator.