Strain energy stored by a spring under maximum non-permanent load distortion is designated as______________?
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Answer: B. Proof resilience
Explanation
Proof resilience is defined as the maximum strain energy stored in a material without permanent distortion. It represents the capacity of a structure to absorb energy safely within its elastic limit. Once loads exceed proof resilience, the material begins to deform permanently inelastically. Strain energy is internal work done by deforming forces acting on elastic structural members. Elastic limit marks the boundary between recoverable elastic and permanent plastic deformation. Resilience is measured in energy units per unit volume of the structural material.
Shock absorbers and vehicle suspension springs require high proof resilience to handle impacts. Materials with high resilience store and release mechanical energy efficiently without damage. Engineers select resilient alloys for components subjected to repeated dynamic shock loading. Option A refers to stiffness which measures force required per unit of deflection. Option C refers to proof stress representing the stress level at the elastic limit. Option D refers to proof load which is the maximum applied force without permanent set.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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