静载荷

On the basis of analyzing forces on the self-supported column, the superposition method in mechanics of material was used to calculate the steady deflection at top of the high column under both of weight and distributed wind pressure. The results show that the effect of weight to top deflection of the heavy weight high column can not be ignored and a formulation is deduced to express this effect.

在对自支承式塔设备建立合理的力学模型并进行受力分析的基础上，采用材料力学中的叠加法，计算了高塔设备在均布风载荷、自重联合作用下的塔顶静挠度，提出对于自重和长细比均较大的高塔，塔体自重对塔顶挠度的影响不可忽视，并推导出了计算这种影响的表达式。

Design and Calculation of parallel connected machine tool single spur track ;2. The stiffness of the single spur track directly influences on the capability of the parallel machine tool.

为探讨并联机床单支路的刚度对并联机床性能的影响，利用ANSYS软件对并联机床的单支路进行静刚度有限元分析，找出了并联机床单支路的应力集中处，得到了单支路所加载荷与丝杠受力之间的关系，改进了单支路的结构设计。

Firstly, the detailed analysis and calculate of the dynamics parameters as suspensory point load, pure toque of speed reducer shaft etc and kinematics parameters of conventional beam-pumping unit and eccentric placed pumping unit which are in services in oil field have been made combining the basic theory of present beam-pumping unit to provide theoretic foundation for the kinematics and dynamics simulation and optimizing design of pumping unit.

首先，结合现有游梁式抽油机工作原理，对油田在役的常规型游梁式抽油机和异相曲柄平衡游梁式抽油机的运动学和悬点载荷、减速箱曲柄轴静扭矩等动力学参数进行了详尽的分析计算，为游梁式抽油机的运动学和动力学仿真及其优化设计提供了理论依据。

By using static equilibrium law, nonlinear buckle behavior of string in deep well has been researched. In comprehensive consideration of gravity, contact force of borehole wall, axial friction and tangential friction of borehole wall on the string, pressure and viscous resistance of fluid outside of and inside of a string, differential equation of buckle has been established, which amended computational model of axial load on a string.

应用静力平衡法对深井注入管柱的非线性屈曲行为进行了研究，建立了综合考虑重力、井壁支反力、井壁对管柱的轴向摩擦力和切向摩擦力及管柱内、外流体压力和粘滞阻力联合作用下的屈曲微分方程，对注入管柱的屈曲变形及弯曲附加应力等后屈曲行为进行分析，修正了管柱轴向载荷计算模型。

It was the first time in this work to set up the subcritical crack growth model under monotonical loads by use of R—curve, starting with the fracture mechanics. The V—K curves under the static loads and dynamic loads were made by use of computer numerical method.

首次从断裂力学出发，利用R曲线，建立了单调载荷形式下亚临界裂纹扩展模型，并利用计算机数值计算获得材料在静载及动载下的V—K曲线。

This paper also describes microscopic mechanical behavior of foam metal materials phenomenologically by means of combination of experiments and numerical simulation, simulates dynamic and static response of foam aluminum structures by means of FEM, and simulates large deformation elastic-plastic behavior of foam aluminum structure under static and dynamic loads with accuracy.

本文还利用实验和数值模拟相结合的方法，以唯象的本构模型描述了泡沫金属材料的宏观力学行为，采用有限元方法模拟了泡沫铝结构的静、动态响应，较准确的模拟了泡沫铝结构在静态、动态载荷作用下的大变形弹塑性行为。

The effect of static aeroelastic distortion to the aerodynamic characteristic for a real high-aspect ratio sweepforward wing of composite material under different load statuses was analyzed. The integrated design method combined aerodynamic with structural was adopted in this analysis using associated computational fluid dynamics program FLUENT and computational structual dynamics program NASTRAN.

针对－真实复合材料大展弦比前掠机翼，采用气动／结构一体化的分析方法，利用计算流体动力学软件FLUENT和计算结构动力学软件NASTRAN联合求解，研究了在不同载荷情况下大展弦比柔性机翼静气动弹性变形对机翼气动特性的影响。

2 What is the maximum allowable stress for CJP groove weld meta l splicing two ASTM A-36 steel non-redundant members of equal thickness and width, subject to loading of 2×106 life time stress reversals, assuming the weld reinforcement remains and all such joints are to be radiographed ?

对於连续两个同样厚度和宽度的 ASTM A-36钢的非超静定焊接件，假定保持焊缝加强高并所有如此接头都要进行射线探伤，在承受2×106连续应力交变载荷下完全熔透坡口焊缝金属的最大允许应力是多少？

The results show that the stress of clack box is lower than the yield limit of the material. The safety factor is between 1.8 and 3.2, and the distortion of clack box is in the permission scope. The static strength and stiffness satisfy the request, and the life of clack box exceeds 107, which meets the requirements.

研究结果表明，在3种载荷工况作用下阀箱应力均低于材料的屈服强度，其安全系数为1.8~3.2，且阀箱的变形在允许范围之内，阀箱静强度及刚度满足要求；阀箱疲劳寿命大于107，也满足要求。

Establish theoretical prediction models of MOR of bamboo wood composite container floorings in accordance with different rupture mode.

分析了试件尺寸和不同的外加载荷对静曲强度的影响。

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。