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What is thermal stress?...

What is thermal stress?

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**Step-by-Step Solution:** 1. **Definition of Thermal Stress**: - Thermal stress is defined as the stress that develops in a material due to a change in temperature. When the temperature of a material changes, it tends to expand or contract. If the material is constrained (e.g., fixed at both ends), this expansion or contraction cannot occur freely, leading to the development of stress. 2. **Consider a Rod**: - Imagine a rod that is fixed at both ends (rigid support). Let’s denote the initial length of the rod as \( L \). ...
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