Mechanics of Materials: Does the character “ Should” in stress mean “to respond”?
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This post builds on my previous question: when a structure is subjected to external loads, it undergoes elastic deformation, resulting in internal stresses； When the external load is removed, the elastic deformation disappears and the internal stress vanishes; thus, the internal stress exists as long as the external load is present, and it disappears when the external load is removed ； So does the character “ying” in stress mean “response”? In response to an external load? Implies it arises with the application of an external load and disappears when the load is removed? Of course, external loads such as thermal stress still exist once they are removed, but what causes thermal stress is uneven thermal expansion, and the underlying factor for this is still the external influence of heat (or cold). Does it also respond to this external factor of \"heat\"?
Yes, the character “ Should” in stress can indeed be understood as meaning “response”. Here, “should” refers to the reaction or response of a material to such external conditions under the action of external forces (such as force, heat, etc.). Therefore, the generation and disappearance of internal stress are indeed a response to changes in external loads. .
Okay, thank you. When I was in school studying mechanics of materials, I only learned the concepts; it’s only now, after starting work and looking back, that I thought about this issue