几何结构

This model can be used in the analysis of the stability of bending-torsionof thin-walled structures and the analysis of ultimate bearing capacity of spatial member structures.

采用本文提出的几何非线性分析力学模型可进行薄壁空间杆系结构的弯扭失稳分析，为实现薄壁杆系结构的极限承载力分析提供了较为精确合理的分析力学模型。

Meshes are built which mainly are uncontinuous, complete unconstructed hexahedron, partially unconstructed polyhedron, near wall boundary layer mesh is adopted which can fit complicated geometry surface of cooling system well and guarantee mesh quality, in addition partial refinement technology is used to make mesh better in some key location.

网格主体采用非连续的、完全非结构化的六面体，部采用非结构化的多面体网格，对于壁面附近采用边界层网格处理，这样网格既能很好地适应冷却系统复杂的几何表面，又进一步了保证网格质量，另外利用局部加密技术对重点区域进行处理使网格更加完善。

Eigenvalue buckling analysis can only forecast the theoretical buckling strength of an ideal linear elastic structure, because of the unideal property of material and geometrical nonlinearity, most structures can not reach their theoretical strength limit.

特征值屈曲分析只可预测一个理想线弹性结构的理论屈曲强度，材料非理想性与几何非线性使得大多数结构无法达到它们理论强度极值。

Using the method of orthogonal design of experiment,the influences of the configuration of the needle surface nonsmooth structure unit,its interval,depth,and diameter or width on the drag on the injector needle against the human skin were investigated,and the influence order of factors and their optimal levels were determined.

运用试验优化技术，找出了针头表面几何非光滑结构单元形态、结构单元深度、间距及直径对注射时针头壁与皮肤间摩擦阻力的影响规律，分析了影响因素的主次和最优水平。

Making use of field matching method,combining with the variational method,the dispersion equation of the ridge loaded ring plane slow wave structure and small signal gain of this type of TWT are presented in this paper.

脊加载环板行波管是一种频带相对较宽的大功率行波管，本文用场匹配和变分原理相结合的方法，研究了脊加载环板慢波结构的导波特性及这种行波管的小信号、大信号特性，讨论了结构的几何尺寸及电子注参量对慢波的传播特性、小信号增益及注波互作用非线性效应的影响。

This paper is mainly about the research of the structure and principle of the aerostatic bearings, and gives a method of engineering calculation; two calculating programs of bearing load, stiffness and gas flow are written in C language, then detailed analysis is made according to the results.

本论文讲述了气体轴承的工作原理和结构，给出了气体轴承工程计算的方法；用C语言编程进行工程计算并分析了各几何参数和气体参数对性能参数的影响，根据分析和计算结果确定了气浮轴承的参数；利用三维造型软件Pro/ENGINEER进行了气浮台整体的结构设计。

Because the required mesh sizes of the geometry are allowed due to the precision of electromagnetic analysis, the number of meshes is increased by the iterative method to decrease the increscent mesh sizes in the process of structural analysis. Then the effect of the structural distortion on electromagnetism can be obtained by the method of moment.

该模型根据电磁分析精度对几何模型网格尺寸的要求，采用了迭代法加密网格来解决结构位移场引起的网格尺寸增大问题，进而利用矩量法准确分析结构位移场对电磁特性的影响。

Considering its complex geometric topology, multi states of self-equilibrium stress and modes of inextensional mechanisms, a prestress optimization strategy was proposed to solve the final feasible prestress distribution problem of the structures with multi states of self- equilibrium stress, where the decomposition and assembly method of modal matrix, the theory of structural equilibrium matrix and the singular value decomposition method were utilized.

考虑该结构几何拓扑复杂、多自应力模态与机构位移模态的特点，应用平衡矩阵理论与奇异值分解算法，通过模态矩阵的分解组合方法，给出一种具有一定普遍意义的预应力优化策略，使多自应力模态结构体系的最终可行预应力分布求解得以简便的实现。

In chapter 5, according to the equation of potential energy, the redundancy formula is formulated, and the elastic and geometric redundancy is deduced further. Finally, the overall flexibility and kinematically property is evaluated through redundancy for the structures.

第五章，根据势能方程推导出结构冗余度，导出弹性冗余度和几何冗余度，通过冗余度分析研究了结构体系特征和整体柔性。

The influence of thickness d of ZnO varistors on the residual voltage ratio K \-r has been experimentally studied.It is showed that K \-r also has dimensioned effect. The results show that there is a residual voltage ratio K \-r decreases propor tonally with E \- 1mA ,and increase μ as grain mean size.

实验研究了厚度d 对ZnO压敏电阻片残压比Kr 的影响规律，表明残压比同样存在几何效应；实验还表明残压比Kr 随电位梯度E1m A成反比例下降，随平均晶粒尺寸μ的增大而增大；找到了一个综合微观结构参数平均晶粒尺寸μ和晶粒尺寸方差σ2 的乘积（σ2μ），能较好地反映电性能与微观结构参数的关系。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。