查询词典 shear modulus

Based on Hill' elastic-plastic instability theory,the velocity field for sheet instability which is caused by the shear stress during sheet metal forming is developed,and the theoretical formula of the wrinkling critical shear stress is proposed.

以Hill关于弹塑性失稳理论为基础，建立了剪应力起皱失稳的速度场分布，给出了临界起皱剪应力理论计算结果，分析了板料屈服强度、硬化指数、板厚方向性指数及板料厚度对临界剪应力的影响，并与实验和数值模拟结果进行了对比。

A new method for assessing the local shear strain in adiabatic shear band of Ti-6Al-4V is proposed by using of gradient-dependent plasticity.

中文摘要：提出了利用梯度塑性理论计算Ti-6Al-4V绝热剪切带的局部剪切应变新方法。

The Company in the production process of gradually introducing a full set of first-class large-scale domestic and foreign advanced equipment, including high-speed precision flying straight up shear machine, High Speed Precision Sheet Slitter, sanding machines and a number of other essential equipment, is a cold-rolled stainless steel sheet supply, precision shear processing, precision surface processing (including oil matte board, drawing board mill oil, etc.), distribution, warehousing as one of the modern logistics enterprises.

本公司在生产的过程中逐步引进国内外先进全套一流大型的设备，包括高速精密飞追剪平直机、高速精密薄板分条机、磨砂机等一批主要设备，是集不锈钢冷轧薄板供应、精密剪切加工、精密表面状态加工（包括油磨砂板、油磨拉丝板等）、配送、仓储为一体的现代化物流企业。

The slump and the time of slump are tested through the method of slump test, and the properties of concrete are calculated and analyzed. The study denotes that for C20 grade concrete, the value of the shear yield stress σ0 and plastic viscosity η is the smallest when the fly ash contains 20% weight of Portland cement; for C60 strength grade concrete, the value of plastic viscosity is the smallest when fly ash contains 20% weight of Portland cement and the value of the shear yield stress σ0 is the smallest when fly ash contains 30% weight of Portland cement.

利用改良坍落度筒的实验方法对坍落度和坍落时间进行测试，并进行相应的计算与分析，实验结果表明：强度等级为C20的混凝土，粉煤灰掺量为20%时粘度和屈服应力值最低；强度等级为C60混凝土，粉煤灰掺量为20%时，其粘度最低，而屈服应力值在粉煤灰掺量为30%时最低。

A series of new failure criteria and yield criteria between the single-shear theory and twin-shear theory can be introduced from the unified strength theory.

统一性，即将以前相互没有联系的概念、方法、理论、现象等统一起来，这是一个科学理论美的重要特点之一。

Yu,1991,the plastic limit analysis for oblique plates and the unified limit loading expression are given,which includes a set of solutions from the single-shear yield criterion(Tresca,1864)to the twin-shear yield criterion (M.H.Yu,1961).The relative curves between qand b are also got for square plates and rhombic plates.

从而得到一系列从单剪屈服准则(特雷斯卡，1864)到三剪屈服准则(米泽斯，1913)再到双剪屈服准则(俞茂宏，1961)的各种斜板的极限载荷，并得到矩形板和菱形板的极限均布载荷p随不同屈服准则的变化曲线，文献中已有的解均为统一解析解的特例。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

The shear mechanisms of steel-high strength concrete short column under different failure patterns were analyzed,and related formulae for calculating shear capacity and limit value of axial compression were put forward.

分析了型钢高强混凝土短柱在不同破坏形态下的抗剪机理，提出了相应的抗剪承载力计算公式和轴压比限值。

In this paper,one contrast reinforced concrete short column and three reinforced concrete short columns strengthened with concrete and exterior steel plate were tested to investigate their shear behaviors,based on experiment results,it is revealed that complex strengthening with concrete and exterior steel plate can impactful improving shear bearing capacity of reinforced concrete short column.

进行了1根对比钢筋混凝土短柱和3根用混凝土和外包钢板复合加固钢筋混凝土短柱的受剪试验研究，试验结果表明，用混凝土和外包钢板复合加固可有效提高钢筋混凝土短柱的斜截面抗剪承载力。

Misplacement of the shearing tool produces invalid bond shear failures, the shear force readings of which must be excluded from analysis.

因剪切刀头放置位置错误而产生的读数是无效的，不应供分析使用。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的