MME 110 · Metallic Materials
Session 6 · Hour 1 · Two metals, one stretch
Instructor cue 비밀 짐을 찾아라.
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Heat with a wall is a load
Held. ε_denied ≈ 4.80e-4. Stress is born.
Name the heat
0/4
Two materials sharing one stretch.
Strain is alpha times the change of temperature.
Heat wants to grow. Walls say no. Stress is born.
A sudden load. Not the slow one on the same bar.
CheckFree heat is only a change of size. Held heat is a stress. ε=αΔT. Restraint → stress. Impact ≠ slow load.