upset ratio 中文意思是什麼
upset ratio
解釋
鐓粗比, 頂鍛比-
Abstract : in this paper, the stress field in a concave plank being upset is resolved by analytic mathematical method of plastic mechanics, the relation between the geometric parameter ( dimension ratio, concave shape ) and friction shearing stress is determined for upsetting a plank free of tension stress
文摘:本文用塑性力學初等解析法求解了凹形板坯鐓粗時的應力場,確定了無拉應力鐓粗時坯料幾何參數(尺寸比、凹形形狀)與坯料端面摩擦剪應力的關系。
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