Shock load energy storage

Why is shock loading a challenge?

This challenge is especially prominent when the mechanical energy is transferred to the material by shock loading.

How do shock absorbers save energy?

Typically, energy from vibrational sources is dissipated through hydraulic friction and heat in shock absorbers. To reduce the energy cost of vehicles, the energy wasted in the shock absorbers has been investigated and characterized in several studies.

Can a shock absorber be used as an energy harvesting device?

Among these initial theoretic studies, the shock absorber was transformed into an energy harvesting device from an energy dissipating device. Possible noise and heat in the conventional working progress are eliminated, which is environmentally friendly and lifetime extending.

Can regenerative shock absorbers extend the battery endurance of an EV?

Whereas existing regenerative shock absorbers mainly focus on the methods of energy harvesting, there is no such regenerative shock absorber for use in extended range EVs. In this paper, we present a novel high-efficiency energy regenerative shock absorber using supercapacitors that is applied to extend the battery endurance of an EV.

How efficient is a shock absorber?

Furthermore, vibration energy can be regenerated with a measured average mechanical efficiency of 44.24%. An average power of 4.302 W was attained by this prototype shock absorber at a vibrational input of 2.5 Hz and an amplitude of 7.5 mm. The prototype can achieve 54.98% efficiency at a frequency of 2.5 Hz and an amplitude of 7.5 mm.

What are the adverse effects of shock loading?

The detrimental consequences of such damage are amplified when metals undergo repeated shock loading events 9, 17, leading to the accumulation of additional damage. These adverse effects cause various issues, such as incipient and catastrophic spall failure and significant embrittlement by shock hardening 5, 18.