Overloading that triggers an increase in tensile strength accompanied by a loss in compressive strength is termed__________________?
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Answer: A. Bauschinger effect
Explanation
The Bauschinger effect occurs when plastic deformation in one direction alters yield strength. Yield strength in compression decreases after prior plastic deformation in tension. This directional dependence stems from internal residual micro-stresses within the crystal lattice. Dislocations pile up against barriers during initial loading in one direction. Reversing the loading direction assists dislocation movement, lowering the new yield limit. This phenomenon is important in cyclic loading and fatigue analysis of metals.
Metal forming simulations must account for the Bauschinger effect during springback predictions. Structural components subjected to cyclic reverse loading experience localized yielding changes. Advanced material models incorporate this directional hardening behavior for accurate design. Hooke's law describes linear elastic stress-strain behavior below the material yield point. Hysteresis refers to energy dissipation during cyclic loading and unloading loops. Relaxation describes the gradual decrease in stress under constant strain over time.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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