查询词典 shear stress

The failure causes are discussed that contamination and scratch of gold plating, non-wetting between gold and solder, lacked bounding protective atmosphere and stress lead to decrement of the die shear strength.

找出了芯片脱落的主要原因：金膜表面污染、划痕、浸润不良、焊接气氛保护不足及应力导致焊点的结合强度不够致使芯片脱落。

The main equipment has 300mm - 1200mm various types of rolling mill and auxiliary sets of 5; 1 metric tons - 5 tons of electro-hydraulic forging hammer two sets; different scale electric and coal heating furnace 6 sets; car clamp, milling, planing, grinding, shear, such as various types of boring machine 55 sets, fully satisfy the market for all types of metal stress machining needs.

主体设备有 300mm - 1200mm 各类轧机及辅机 5 台套； 1 吨- 5 吨电液锻造锤两台套；不同规模电加热及煤加热炉 6 台套；车钳、铣、刨、磨、剪、镗等各类机床 55 台套，完全满足市场对各类金属压力机械加工的需求。

The results showed compared with the native state the shear strength of rockmass under the saturation state decreased by 11.17%, cohesion force decreased by 16.09%, internal frictional angle decreased by 10.02%.(3) 3D-σFEM numerical simulation software is used to simulate the slope stability on the native state and saturation state. Compared with the nature state the displacement of the discontinuity and stress concentration in the saturation state is largened clearly, the results showed slope stability under the rainfall is weakened.

更多含有天然结构面的岩体试件进行了不同含水量下的强度试验，试验结果证明在岩体试件处于饱水状态时的结构面抗剪强度比天然状态下平均下降了11.17%、粘聚力平均下降了16.09%、内摩擦角平均下降了10.02%；(3)采用3D-σ有限元数值软件对K86+180～K86+470段岩质边坡进行了三维有限元数值模拟，并且分天然状态分阶段开挖和饱水状态分阶段开挖两种不同状况进行了稳定性分析，从分析结果可以看出与天然状态相比，饱水状态下软弱层水平方向位移明显增大，坡脚及软弱层特别是软弱层临空面附近的剪应力值显著增大，并且其安全系数与天然状态相比也显著减小，说明在有大的降雨发生当岩体处于饱水状态时边坡整体稳定性被削弱，边坡失稳可能性增大。

The following results are got:(1) the analytical equation between the overburden pressure, the pore fluid pressure and the matrix stress is established;(2) the nonlinear relation between the porosity of saturated soils and the pore fluid pressure are obtained, which relates to the initial state and the initial pore pressure of saturated soils;(3) Based on the new principle, the rock shear strength theory and hydraulic fracturing pressure formulation are reacquired, which are much more reasonable than the traditional ones.

第二章讲述的是该有效应力原理的一些工程应用研究，通过该研究，我们取得如下成果：（1）建立了上覆岩层压力、孔隙流体压力、基岩应力之间的解析关系式；（2）推导出了饱和土体孔隙度与孔隙水压之间的非线性关系式，该关系式与多孔介质的初始状态及初始孔隙水压有关；（3）建立了基于多孔介质的岩石剪切强度理论和岩石破裂压力计算公式。

The following results are got:(1) the analytical equation between the overburden pressure, the pore fluid pressure and the matrix stress is established;(2) the nonlinear relation between the porosity of saturated soils and the pore fluid pressure are obtained, which relates to the initial state and the initial pore pressure of saturated soils;(3) Based on the new principle, the rock shear strength theory and hydraulic fracturing pressure formulation are reacquired, which are much more reasonable than the traditional ones.

笔者在第一章中提出，在建立多孔介质的有效应力原理时，必须考虑其细观结构，并解析推导出了基于多孔介质之上的饱和多孔介质有效应力原理。该原理包含了孔隙度φ这一表征多孔介质结构性的重要参数；并体现了孔隙流体与固体骨架对总应力的分担作用，分担比例为φ：（1-φ）。

In the plane model, the main ore-controlling factors and dynamic mechanism are studied, discussing the variation process of regional structural stress field,(including the shear strain and volumetric strain that is closely related with mineralization), and the variation of pore pressure in adjacent regions of Zou-Shi fault.

平面模型主要研究了挤压应力作用下矿区的主要控矿因素及成矿的力学机理，探讨区域构造应力场(主要讨论与成矿作用密切相关的剪切应变、体积应变等)的变化过程，以及断裂带附近的孔隙压力变化。

Based on the critical approach, a model for multiaxial fatigue life prediction was established by combining maximum shear strain and normal strain on the critical plane, and the effect of stress state under the multiaxial cyclic loading condition on the fatigue life was taken into account.

通过对薄壁圆管和缺口试样的高温多轴疲劳寿命特性分析，基于临界面方法提出了一个的多轴疲劳寿命预测模型，在考虑临界面上最大剪应变和正应变对多轴疲劳损伤贡献的同时，还引入了应力状态对多轴疲劳寿命的影响因素。

Results show that when improving spot pitch in weld bonded joints with high elastic modulus adhesives, stresses in weld spot zone are decreased while stresses and strains at edges of overlap region are increased slightly. For the joints with low elastic modulus adhesives, both stress concentration degree at the weld spot and the shear strain at edges of overlap region are increased with the spot pitch increasing.

结果表明，高弹性模量胶粘剂胶焊接头中，增大焊点间距，焊点区应力减小而搭接区边缘胶层中的应力应变略有增大；低弹性模量胶粘剂胶焊接头中，焊点处应力集中程度和搭接区边缘胶层中的剪应变值都随焊点间距的增加而增大，增加焊点间距，两种接头的胶层断裂强度都将降低。

The shear strength between soil and structure interfaces in high stress is one of key research in shaft lining fracture theory.

高应力下土与结构接触面抗剪强度研究是当前井壁破裂理论研究的关键之一。

Comparisons of the maximum acceleration,maximum shear strain of the dam and stress of the slabs calculated by these two methods are carried out.

研究了不同的材料模型与计算方法对坝体的峰值加速度、峰值剪应变及面板的动应力和周边缝动变位等的影响。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。