The semi-closed bomb control equations using study dynamic extrusion stress of propellant charge bed were established, and some experimental and numerical simulations were tested. 建立了用于发射药床动态挤压破碎应力研究的半密闭爆发器控制方程组,进行了半密闭爆发器数值与物理仿真。
The production mechanism of the surface residual stress producing in grinding process is the combined effect on extrusion stress and the cutting stress and the thermal load. 在磨削加工过程中产生表面残余应力,其产生机理是磨粒刃作用引起的挤压应力和切削应力及热应力的综合作用效应。
Static analysis and design optimization of the dewatering disk of a multi-channel rotary press filter extrusion stress 多通道旋转挤压脱水机脱水圆盘静力分析及优化设计
The new extrusion equipment has been designed to research the rheological behavior of LLDPE extrusion moulding in complex stress filed of vibration and shearing. 利用振动剪切挤出装置研究了线性低密度聚乙烯(LLDPE)在振动与旋转剪切复合力场中挤出成型时的流变行为。
HDPE pipes were extruded by using a self-made extrusion die with complex stress field of shearing frist and then drawing during extrusion. 用自行研制的能产生先剪切后拉伸的复合应力场挤出成型装置,挤出高密度聚乙烯(HDPE)管材,对管材周向、轴向力学性能进行了初步的研究。
Discussion on "Assumed Calculation" of Extrusion Stress 关于挤压应力假定计算问题的讨论
Three-dimension displacement harmony boundary of shrouded blades is build using an efficient commercial FEA software in three dimension cylindrical stretched coordinates so that the average extrusion stress of the contact face of shrouded blades can be calculated. 采用商业有限元软件在柱坐标系下,建立符合实际工作情况的叶片凸肩部位三向位移协调边界条件,并在此基础上计算叶片凸肩接触面的平均挤压应力。
A Study of the Stress Distribution in the Die for Cold Extrusion Using Photoplastic Method of Stress Analysis 用光弹法研究冷挤压模的应力分布
A Study on the Mechanism of Producing Expanded Food with Twin Screw Extrusion Stress and the Analysis of Influent Factors 双螺杆挤压机生产膨化食品机理及影响因素分析
Desensitizing mechanism and different effects of TATB, wax and graphite on explosive sensitivity were discussed on basis of the changes of the mentioned desensitizers under the action of drop hammer impact, extrusion stress and impact acceleration-time curves. 研究TATB、石蜡、石墨在落锤撞击试验条件下的变化及试样的撞击加速度-时间曲线,探讨了这些钝感剂对HMX、RDX等炸药的钝感机理及产生不同钝感效果的原因。
What's more, the rules of the Lateral compression effect on angle section extrusion's stress distributing and springback are analyzed qualitatively based on experiments. 另外,本文基于实验定性地分析了侧压力对型材截面应力和回弹的影响规律。
However, when encountering complicate and changeful hydrographical condition in long and large tunnel construction, especially excavating in terrane deformed by high extrusion pressure under highland stress, the guard shield will often be seized by rock around it and can not work. 但在进行长、大型隧道施工中常会遇到复杂多变的水文地质条件,特别是在高地应力挤压变形的岩层中掘进,其护盾往往被围岩卡住而无法工作。
With the help of simulation analysis software and on the basis of the preliminary design result, the cold extrusion process, stress condition and stress distribution in the extrusion forming of spline tubes are simulated. 应用模拟分析软件,根据初步的设计结果,模拟花键管冷挤压成形的挤压变形过程,受力状况及应力分布,并根据模拟结果适当改进模具结构。
Previously, in "assumed calculation" of extrusion stress of round-head rivet and round hole, it was considered that maximum non-uniform extrusion stress equals approximately to the value obtained from dividing extrusion force by area of diametral plane of round-head rivet or round hole. 在圆钉与圆孔的挤压应力假定计算中,曾认为:以挤压力除以圆孔或圆钉的直径平面的面积所得的挤压应力与理论分析的最大应力大致相等。
Starting from the viewpoint of earth expansion and passing through the analysis of the difference between two big kinds of lithospheres in ocean and continent, the model of earth expansion is discussed and it is studied that how the horizontal extrusion stress in crust is produced. 本文从地球膨胀观点出发,通过分析海陆两大类岩石圈差别,探讨地球膨胀方式,推导出地壳中如何产生水平挤压应力。
The Earth expansion could be the cause for forming the crustal horizontal extrusion stress 地球膨胀可能是地壳水平挤压应力的成因
On the basis of the force analysis, the relationship between the geometric parameters of the chamber, the extrusion stress and the dimension of wheel groove is given. 在对变形区进行受力分析的基础上,给出挤压型腔几何参数、单位挤压力、轮腔间隙以及轮槽尺寸之间的关系式,推导出挤压轮上的驱动功率和摩擦功率的计算公式。
Research on Critical State Extrusion of PE in Complex Stress Field 聚乙烯在复合应力场中临界状态挤出成型的研究
A study on the design of prestressed cold extrusion die with stress rings based on Design of experiment 一项以试验为基础的预应力冷挤压模的设计与研究
This paper is going to give an overall introduction on the elasticity research from the point of extrusion swell and normal stress. It is helpful to fasten the elasticity research. 本文从挤出胀大和法向应力等角度对聚合物弹性行为的研究情况,做了比较全曲的介绍,有助于全面了解聚合物弹性行为的研究概况,并为进一步的理论研究提供指导。
From the extrusion stress displacement curves of semi solid extrusion under different temperatures, it was found that the deformation force during semi solid extrusion is low and steady. 不同温度下半固态挤压的挤压力与位移曲线表明,半固态挤压过程的成形力低且稳定。
Research of extrusion dies stress field 型材挤压平模应力场的研究
The variation laws of wearing character on V-packing are studied in the whole working life. The wearing character include the friction force, axial extrusion stress and axial pressure distribution. 对V形密封在整个工作寿命中,轴向挤压应力、轴向压力分布、摩擦力等特性变化进行实验研究。
Junggar basin is a downwarped basin with foreland characteristics, which has been controlled by extrusion stress in Jurassic, and the differential elevation and subsidence of the basement would result in the formation of slope-break belt at the margin of the basin. 准噶尔盆地是一具前陆特征的坳陷盆地,侏罗纪时受挤压应力控制,基底差异升降而在盆地边缘形成坡折带。
The change of extrusion stress leads to the opening of the old faults of different trends in middle and shallow formation and provides multi directional channels for hydrocarbon migration. 挤压力方向的改变导致了中浅层不同方向的老断层开启,开辟了多方位的油气运移的通道;
The influence of non-uniform extrusion stress imposes the same extent to the casing pipe as the uniform extrusion stress. 非均匀分布挤压载荷对石油套管抗挤毁强度的影响同均匀分布载荷相似。
The results show that increase of extrusion stress may improve the as cast structure and reduce distribution of dendritic structure. 结果表明:增加挤压压力,可以改善铸态组织,减轻枝晶分布;
According to the phenomena of fatigue damage, the extrusion stress concentration factor at the position which is vertical to the overall load direction is acquired by a modification to the factor at the maximum stress position given in the stress severity factor approach. 按照连接件疲劳破坏现象,将SSF法中的挤压应力集中系数从最大应力位置处修正到了垂直于总体载荷方向处,并给出了修正后的挤压应力集中系数Ktb拟合公式。
When the picks cut coal, they need to withstand the higher cyclic shear stress, extrusion stress, more severe abrasion and impact. 截齿在切割煤岩时,需要承受较高的周期性剪切应力、挤压应力和较严重的磨损和冲击。