惯性矩

According to the general principle of material mechanics and section form of heavy steel structure,derives the calculation formula of polar moment of inertia J_ρ of heavy steel structure on torsion.

根据材料力学的基本原理，针对重型结构钢截面的形式，推导出其扭转时极惯性矩Jρ的计算公式

An analytical method is proposed for calculating free torsion constant of complicated thinwalled cross section from free torsion theory.

通过自由扭转理论推导出复杂薄壁箱梁断面的自由扭转惯性矩的计算方法；采用实际复杂薄壁箱梁断面进行了数值验证，并和使用有限元方法计算的结果进行了比较。结果表明，这是一种简单实用且精度较高的计算方法

A control method, crossfeedback control, is studied to restrain gyroscopic effect of a magnetic bearingsupported flywheel system.

临界转速与控制器参数以及转子的惯性矩有关，可根据实际需要通过控制器参数进行调整。

Yieldable steel arch ; staple ; element stiffness matrix ; sectional inertial torque ; support internal forces ; residual internal stress

可缩性金属支架；卡缆；单元刚度矩阵；截面惯性矩；支架内力；残余内力

Based on the rolling test results of five catamaran models with symmetrical demihulls in the smooth water, when the linear and square dampings are considered, the reduced amplitude coefficients and nondimensional rolling added moment of mass inertia are discussed.

根据5条具有对称片体的双体船模型在静水中横摇试验资料，讨论了双体船横摇附连质量惯性矩系数，线性阻尼以及纯平方规律阻尼下的减幅系数与船型参数的关系，并归纳得这些系数的估算表达式。

Based on the rolling test results of five catamaran models with symmetrical demihulls in the smooth water, when the linear and square dampings are considered, the reduced amplitude coefficients and nondimensional rolling added moment of mass inertia are discussed.

根据5条具有对称片体的双体船模型在静水中横摇试验资料，讨论了双体船横摇附连质量惯性矩系数，线性阻尼以及纯平方规律阻尼下的减幅系数与船型参数的关系。

Based on the research progress abroad,calculation method of deflection due to short-term loads and calculation expression of effective moment of inertia for concrete beams reinforced with FRP bars were brought forward.

在国外有关成果的基础上，给出了FRP筋混凝土梁的挠度计算建议方法及&有效惯性矩&的表达式，同时提出了设计时不需进行挠度验算的最大跨高比限值的计算公式及相应的基于挠度控制的承载力设计方法，对工程应用有着实际的指导作用。

The paper describes how the local force of the main web is considered as the force caused by the Contact pressure among the trolley wheel, rail and top flange, and how the contact analysis model for the local force is built by means of both Hertz theory and finite element software ANSYS combined. Also, it analyzes the variation of the local stress under the different conditions and comes to a conclusion, and compares the results derived from the experimental formula with the result from ANSYS.

本论文的主要内容：将Hertz接触理论和有限元软件ANSYS结合起来，把主腹板的局部受力问题视为小车轮与轨道及轨道与上翼缘板之间发生接触行为作用下的受力问题，建立了小车轮压作用处偏轨箱形梁主腹板局部受力的接触分析模型，研究不同情况（小车轮压、箱形梁几何参数和轨道截面惯性矩）下局部应力的变化规律，得出相关结论；最后将经验公式解与ANSYS数值解进行对比分析论证。

Based on discussion of attached plate and analysis of beam elements calculation results, a experience formula is deduced for the calculation of a beam element's inertial moment.

基于对梁元带板问题的讨论及对大量梁元的实际计算结果分析，推导出该梁元惯性矩计算的经验公式。

The stiffness is k=EI/L where E is the modulus of elasticity, I is the crosssectional moment of inertia, and L is the length of the flexure.

该刚度K二依爱/ L的其中E是弹性模量，我是截面惯性矩，L是弯曲的长度。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了