查询词典 compressive stress

The biaxial compressive tests of concrete under constant lateral stress are carried out.

6进行了混凝土在不同侧应力和加载速率下的双轴压试验。

(1) The input of the internal fixation implant should be in accordance with the compressive trabeculae and be clingy with the femoral calcar, Abduction in small degree (10-30°) will improve the stress in femoral neck region. The stress distribution of the femur under extemal violence explained why the old people are easy to get the middle and low part fractures of the femoral neck and intertrochanteric fractures.(2) The finite element model of femoral neck fracture is good in orrowing various fixation methods for femoral neck fracture.

(1)三维有限元方法用于研究不规则物体是一种有效、准确的数值方法，不仅能考虑到所研究物体的几何形状，而且也考虑到物体的内部结构特性；股骨颈处的压力骨小梁和股骨距是重要的承载结构，内固定物的放置应循压力骨小梁方向尽量紧贴股骨距钻入；载荷主要通过压力骨小梁和股骨距传导至股骨干的中下1/3处；一定角度的下肢外展（10-30°）会较明显的增加股骨颈区的应力，而下肢的内收反而会减小此区的应力；暴力作用时股骨上端应力分布特点从生物力学角度说明老年人易于发生股骨颈中下段骨折和转子间骨折的原因。

On the fracture section, three strain gauges were put above the pins of groups fixed with external fixator. The gauges were recorded when the femurs were loaded vertically. Results (1) The compressive trabeculae and femoral calcar in the femoral neck region are the main load-bearing construction. The contract of the abductor muscle can protect the hip joint. When the model femur was abducted in small degree (10-30°), the stress improved gradually with the abductor angle. But adduction of the model will gradually decrease the stress in that area. When external violence was put on it, the main stress distribution was on the upper femur, which was in the middle and lower part of the femoral neck and between greater trochanter and lesser trochanter.

同时在④⑤两组又应用电阻应变片贴于断端间的三枚斯氏针上方以测定钢针上的应力与应变结果(1)股骨颈处的压力骨小梁和股骨距是重要的承载结构；载荷的传导主要通过压力骨小梁和股骨距由股骨颈区传至股骨干的中下1/3处；外展肌力的收缩对髋关节有一定的保护作用；在小角度外展实验中（10-30°）股骨颈区的应力递增，超过30°时股骨颈区的应力又逐渐减小，但在内收实验中随角度增大股骨颈处应力呈递减趋势；当外界暴力作用时，应力主要集中在股骨上段，即股骨颈中下段和大小转子处及其之间。

Then the pile-soil stress characteristics and stabilizing mechanism of the composite foundation are fully discussed. Based on the close analysis of the influence factors of the vertical bearing capacity, circular aperture extension theory is employed to establish the computing formulas for the pile vertical stress and the foundation vertical bearing capacity, respectively. Moreover, with analyzing the features of the calculation parameters such as materials of gunite mortar, jet pressure, diameter of the jet pipe, pile length, pile layout, a design theory for chemical churning pile composite foundation is proposed. Then, the variation of the pipe deformation with loads, the deformation coordination of pile and soil are studied. And methods to decide pile-soil stress ratio and the compressive modulus are developed. Meanwhile, the corresponding design method and the design parameters are proposed. In addition, studies for construction technique and quality detection of the chemical churning pile composite foundation are presented.

在此基础上深入探讨了旋喷桩的桩土受力特性及其复合地基的加固机理，从影响旋喷桩复合地基竖向承载力的因素入手，基于圆孔扩张理论给出了桩体竖向应力及旋喷桩复合地基的竖向承载力计算公式；通过对喷射浆液、喷射压力选取、喷射直径估算、桩长及桩位设计等各种计算参数的深入分析和研究，提出了一套相应的旋喷桩复合地基设计计算方法；通过计算分析，深入探讨了旋喷桩复合地基变形随荷载变化规律、桩和桩间土变形协调关系、桩土应力比及复合地基压缩模量的确定，并提出相应的设计方法和修正参数；此外，结合工程应用，对旋喷桩复合地基的施工技术及其现场质量检测方法进行了较全面的探讨。

The stress was applied by a helix micrometer. The in-plane compressive or tensile strains were created and the stress in the sample can be calculated according to Hooke's law.

层结构的应力由螺旋测微器施加，可以产生平面内的压应力和应变，大小可以由胡克定律算出。

Based on the finite element method and periodic boundary conditions,a method to analyze the compressive strength of stitched laminates was established,which adopted a bridging model and maximum stress criteria to predict the development of damage and obtain the compressive strength.

提出了三维纤维弯曲模型，基于有限元法和周期性边界条件建立了缝合层板压缩强度分析方法，采用桥联模型和最大应力判据分析损伤扩展并获得压缩强度，预报结果与试验吻合较好。

When the tangential residual stress exists, the stretching stress can enhance and the crushing stress can remarkably reduce the compressive strength.

因此，为了提高石油套管的抗压溃强度，应根据管体的受力状态，使石油套管的管体上产生最佳的残余应力值，提高石油套管的抗压溃强度，延长使用寿命。

In another cadaveric study, Adams and Hutton58found that the lumbar facet joints resist approximately16% of the intervertebral compressive force when standing erect versus near 0% when sitting, which helps explain the high intra discal pressures during unsupported sitting.59 Finally, after conducting in vitro experiments measuring induced loads on cadaveric lumbar facets, Lorenz et al.60 concluded that with increasing compressive loads, the absolute facet loads increases only slightly, so that the proportion of the axial burden borne by the l-z joints actually decreases with increasing stress.

另一项尸体标本的研究中，Adam和Hutton发现，当直立站立时，小关节承担了逐渐压力的近16%，而坐位时进0%，这解释了为什么在无支持的坐位时椎间的压力非常高。最后，Lorenz在尸体标本加载负荷后测量小关节的应力后，认为增加压力负荷时，小关节间的应力仅轻微增加，因此在轴向负荷中，小关节承担的比例实际随着应力的增加而减少。

The growth path of crack was increased due to the interaction of compressive and tensive stress. The effect of residual stress was kept as long as the boundary of the grains was intacted.

由于基体中压应力和拉应力的共同作用使裂纹在基体中的扩展路径增加，增加了裂纹扩展的阻力，且偏转程度显然比不考虑残余应力场时大很多。

In this paper, test research have been performed on the two important mechanical properties indicator compressive modulus of elasticity and shear modulus. Numerical simulation has been performed on the base of results of test under the situation uniform and uneven thickness of elastomer layer, which analyze internal stress distribution of the elastomeric bearing, as follows:(1) The traditional test methods of compressive modulus of elasticity test are rather cumbersome and take up experimentalists lots of time. This paper has improved the traditional test methods of compressive modulus of elasticity test, which has collected the holding-load time together to concentrate on holding load. The tests have been performed on different types of bearings, which results show that the results of the improved test method conform to the error range regulated by the standard and can effectively save time for the experimentalists, also eliminate the accumulative error.

本文主要对板式橡胶支座的抗压弹性模量、抗剪弹性模量两个重要力学性能指标进行试验研究，并在试验结果的基础上对均匀胶层厚度和不均匀胶层厚度两种情况进行数值模拟，分析橡胶支座内部应力分布规律，具体内容如下：(1)传统抗压弹性模量试验方法比较繁琐，占用试验人员大量时间，本文对传统抗压弹性模量试验方法进行了改进，将持荷时间集中起来进行集中持荷，通过对不同类型支座进行试验，试验结果表明该改进试验方法所得结果符合标准规定误差范围，为试验人员节省了大量时间，并且还消除了传统方法中的累计误差。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。