Question

Which of the following option is correct related to the application of elastic hysteresis?

• A. shock absorber
• B. eddy current absorber
• C. shock transmitter
• D. eddy current transmitter

Hint:

Hysteresis in any physical system (elastic, magnetic, etc.) always implies a history dependence and energy loss. This energy loss is often undesirable (e.g., in transformers), but it can be very useful for applications requiring damping, such as shock absorbers or vibration isolators.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Elastic hysteresis is the energy lost by a material during loading and unloading. The loading and unloading stress-strain curves differ, forming a loop. The area within this loop represents the energy dissipated as heat per unit volume.
Step 2: Detailed Explanation:
This energy dissipation is crucial for damping vibrations and absorbing shocks, converting kinetic energy into heat.


A shock absorber utilizes this principle. Materials with large elastic hysteresis loops are effective in shock absorbers because they efficiently dissipate vibrational energy as heat, thus damping motion.
An eddy current absorber uses electromagnetic induction for braking, not elastic hysteresis.
A shock transmitter, conversely, transmits shock with minimal energy loss.

Step 3: Final Answer:
Shock absorber design directly applies the principle of elastic hysteresis (energy dissipation during deformation cycles).