查询词典 shear modulus

In situ SEM observations have revealed that fatigue crack propagation is caused by the shear band decohesion around the crack tip and the formation and cracking of the shear band is mainly caused by the plasticity generated in the loading part of a load cycle.

论文摘要： In-Situ SEM的研究揭示了疲劳裂纹的扩展是由裂纹尖端附近的剪力区散屑和生成热引起的，而剪力区裂纹主要是在循环负载下受载部位产生塑性变形引起。

Result Asymmetric inlet velocity profile deflexion could increase the area of low shear stress and the gradient of shear stress.

结论不对称入口速度剖面可能是诱发动脉粥样硬化发生的一个危险因子。

The vertical stiffness decreases with shear deformation increase and the ratio of quantity of vertical deformation producing shear deformation and vertical stress is variable.

结果是随着剪切变形的增加，隔震橡胶支座的竖向刚度逐渐减小：由剪切变形和竖向压力产生的竖向沉降量的比例是不断变化的。

The assessment formula for shear capacity was established as well, and in which various impact factors of shear strength was considered comprehensively.3. Directed against the main forms of transverse connection in concrete beam bridges, model test and finite element analysis were carried out to find the impact laws of damage on concrete T-beam bridges, in which the three ways of hinged joint, flange rigid connection and cross slab rigid connection were considered. Transverse distribution and degenerate state of transverse connection were studied under various damage conditions. Based on the analysis of test and simulation results, the rule of live load adjustment coefficient of T-beam bridge was put forward, as well as the calculation formula.4. In view of the influence of the damaged transverse connections to load effect, the load effect model was amended by live load adjustment coefficient.

依据损伤出现频率与重要性等级，提出典型损伤混凝土梁式桥按体系损伤、构件损伤和材料损伤三个层次进行评定的原则。2、基于构件和材料层次损伤评估研究成果，对比分析损伤机理和适用条件，提出了《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTG D62-2004)抗弯承载力修正计算公式、抗剪承载力修正计算公式以及综合考虑抗剪强度影响因素的抗剪承载力评定公式。3、针对混凝土梁式桥主要横向连接形式，分别按铰结、翼缘刚接和横隔梁刚性连接损伤对T桥梁桥承载能力的影响进行了模型试验和有限元分析，研究了不同损伤工况对T梁桥荷载横向分配的影响及横向连接状态退化情况。

The variation regularity of joint size and the shear strength of fractal rock joints with different fractal dimensions were subsequently studied by using the numerical direct shear test method.

为了研究岩石节理抗剪强度参数取值中的尺寸效应问题，采用随机分形方法，重构了岩石节理剖面线，在此基础上，应用数值直剪试验方法，研究了不同分维值岩石分形节理抗剪强度参数随节理尺寸的变化规律。

Research the distributive law of shear-lag of curved box girder jointless bridges by variation of load distribution,and compare with those in joints bridges.provide the basis about the account of account of shear-lag of jointless bridges.

分析无伸缩缝曲线箱梁桥剪力滞系数沿桥跨的变化情况并与有伸缩缝曲线桥进行比较，为无伸缩缝曲线箱梁桥剪力滞系数的计算方法提供理论依据。

A theoretical stress tensor model that includes surface tension forces and viscous forces is developed by considering the three-dimensional spatially periodic cells of dodecahedron. Meanwhile, the shear stress and normal stress difference under various shear rates are calculated by computer.

本文在同时考虑表面张力与粘性力的情况下，以三维模型—长菱形十二面体及泡沫的应力张量表达式为基础，得出了泡沫的剪应力及法向应力差表达式，并通过计算机进行了求解，讨论了泡沫粘度、泡沫大小等因素对剪应力及法向应力差的影响。

RESULTS: Caspase-3 activity was decreased by laminar shear stress of 20 dyne/cm^2, and this effect was partly related to the HIAP-2 protein expression induced by shear stress.

结果：20dyne/平方公分的剪切应力抑制caspase-3活性的增加，此作用与剪切应力能够明显诱导内皮细胞产生HIAP-2蛋白表达明显增加有关。

On the basis of operating principle and the observations by borehole shear strainmeter and by use of theoretical earth tide,a new method for in-situ calibration of borehole shear strainmeter at Taian station is presented.

结合钻孔差应变仪的工作原理，借助体应变观测资料，提出了利用理论固体潮对泰安台差应变观测进行实地标定的新方法。

The effects of self-stress, shear span to depth ratio and end plate on the shear performance of SSCFST short beam are studied.

由于自应力的存在，钢管混凝土构件的抗剪承载力有一定程度的提高。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。