The unit pressure in backward extruding hollow billet has been calculated by the slip line method and the upper bound method.
本文对空心件反挤的单位挤压力，采用滑移线法和上限法进行了计算。
The basic theoretical methods such as Slab method, UBET, Slip Line method, FEM, and FVM have been used in the research of metal plastic forming technology.
研究金属塑性成形规律的理论方法现在有主应力法、上限法、滑移线法、有限元法和有限体积法。
The deforming force of cone-die direct extrusion is solved by a mathematic method based on the simplified flow model of slip line field.
基于滑移线场的简化流动模型，运用数学方法求解出了一种锥形模正挤压变形力的最佳上限解，并将该上限解用通用解析式表达出来。
By simultaneously sampling roll-bar speed and estimating tension by electric current-torque method the forward slip model for continuous shape rolling can be identified on-line.
在正常连轧生产条件下，同时在线采集轧辊与轧件速度并采用电流—力矩法估计机架问张力值，可以在线地识别前滑模型。
The thinning drawing force is calculated through deforming work method and slip-line method irrespectively, and the results are compared in this paper.
本文用变形功法和滑移线法分别求解变薄拉深力，并将两种方法的计算结果进行了比较。
The theory of slip-line field is an effective method for problems of plane strain of perfect plastic solids, and the circle-fan field is used frequently.
滑移线理论是解刚塑性平面应变间题的一种有效方法，而圆扇形场则是常使用的。
The equal safety factor method, imbalance thrust method, high-point equity method and reconnaissance criterion method can be used to analyze the double-slip body on the folding-line slope.
双滑块折线边坡稳定分析方法有等安全系数法、不平衡推力法、抗力体极限平衡法、岩土工程勘察规范法。
Based on the limit equilibrium theory for axially symmetric condition, the active earth pressure of circular pit obtained with slip-line method was extended to non-uniform surcharge loading.
基于轴对称情况下土体的极限平衡理论，将圆形基坑主动土压力的滑移线解推广到非均匀堆载情况。
Based on the limit equilibrium theory for axially symmetric condition, the active earth pressure of circular pit obtained with slip-line method was extended to non-uniform surcharge loading.
基于轴对称情况下土体的极限平衡理论，将圆形基坑主动土压力的滑移线解推广到非均匀堆载情况。
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