According to the deep analysis of the typical punching process, the loading charts and the amplitude-frequency curves of straight side CNC turret press frame are obtained. In the end the dynamic response of a typical process is calculated using modal superposition method by FEM software MARC and the static and dynamic stress of some nodes is compared as well.
文摘：根据板料冲裁时的工作负荷图确定了数控回转头压力机的动载荷谱，并通过傅立叶展开，获得了压力机的幅频谱，最后通过MARC软件采用模态叠加法计算了典型冲裁时机身的动态响应，分析了其动态特性，并对特征点的动静态应力进行了比较。
By analyzing the punching stress in the process of punching the laminations of the magnetic yoke of hydraulic generator, this paper puts forward that overload of the punching machine can be resolved in a certain range by the method of the step punching.
通过对水轮电机磁轭冲片冲制过程中冲裁力的分析，提出了采用分级冲裁的方式能在一定范围内解决冲床超负荷问题。
If your stress reaction is anger, punching and kicking are wonderfully salubrious, even if you're just shadowboxing.
如果你的压力反应是愤怒，那么拳打脚踢极为有利健康，即便你只不过是在装模作样。
Taking the reverse extrusion die of 6203 bearing inner race as example to discuss the design approach, stress analysis and calculation formula of its combining concave die and punching head.
以6203轴承内圈反挤压模为例，对其组合凹模和凸模的设计思路、应力分析及计算公式进行探讨，并阐述其设计原理。附图7幅，表3个。
Compressive stress produced by horizontal prestressing tendons within the raft foundation has much to do with the effective prestress and punching shear capacity.
在考虑应力扩散的影响对抗剪有效作用下，提出了预应力筏板基础边柱合理的抗冲切承载力计算公式。
In the process of punching hole, cavity die structural stress change is extremely complex, moreover because the temperature difference between the inwall and ectotheca when it works, there is also thermal stress besides the structural stress.
冲孔成型过程中，冲孔模内的结构应力变化十分复杂，且连续工作时沿壁厚方向由内及外形成一定的温度梯度，因此除结构应力外还有热应力的存在。
The results show that a combined flexural and punching shear failure occurs for each connection, and that, when the applied load approaches the failure load, the tendon stress greatly increases but does not achieve the ultimate strength.
结果表明：所有试件都产生弯曲冲切复合破坏特征；当接近极限荷载时，预应力筋的应力有较大幅度的增加，但未达到其极限强度；
Calculation of Punching Shear Capacity of Prestressed Raft Foundation under Border Column Based on Stress Diffusion
边柱下预应力筏板基础考虑应力扩散作用的抗冲切承载力计算
Constantly Improved Raschel Lace Machine The Process Investigation of Punching Thin Sheet Under Tensile Stress
不断发展中的拉舍尔花边机拉应力薄料冲裁工艺研究
The Process Investigation of Punching Thin Sheet Under Tensile Stress
拉应力薄料冲裁工艺研究
The analysis of punching shear stress criterion for tubular joints
管节点冲剪应力衡准分析
Aimed at premature invalidation of hot-forging die under multi-forces conditions such as large punching, extrusion and sudden cool or sudden heat hot stress, its main invalidation comes form abrasion and rupture.
针对热锻模在受到较大冲击力、挤压力和急冷急热应力等多种受力条件下，模具出现过早失效，其主要失效形式为磨损和断裂。
The deformation not only reflects the flexure behavior of slab at every loading stage, but also affects the stress status on the surface of punching shear cone and the ultimate capacity of the slab.
该变形反映了板在各个受力阶段的抗弯性能，也在很大程度上直接影响着冲切锥面上的应力分布和板的抗冲切能力。