塑性应变比与应变硬化指数是评价板料成形性能的两个重要参数。
Thirdly, plastic strain ratio and strain hardening index are the two key parameters of material's formability.
屈服强度、抗拉强度、加工硬化指数和塑性应变比厚向各向异性降低,塑性应变比平面各向异性增大;
Yield strength and ultimate tensile strength, work hardening exponent and normal anisotropy of plastic strain ratio decrease but planner anisotropy of plastic strain ratio increases.
塑性拘束较大的直缺口试样(i)的整体屈服载荷及缺口前的应力、应变和应变率比塑性拘束较小的V缺口试样(V)大。
The general yield load, stress and strain rate ahead of notches of I specimens with larger plastic constraint is larger than that of V specimens with small plastic constraint.
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