查询词典 orthotropic

Based on experimental investigation on strength, deformation and failure mode of concrete under multiaxial stress states, a nonlinear elastic orthotropic constitutive model is proposed.

根据对混凝土多轴应力下强度、变形和破坏形态的大量试验研究，建立了非线弹性正交异性本构模型。

The recent advance on this topic is reviewed for the last ten years, including superstructural development of long-span steel bridge, mechanics characterization study of orthotropic deck, material properties and pavement system of steel bridge.

本文综述评价了近10年来该方面的研究进展，内容包括：大跨径钢桥桥面结构演化、正交异性钢桥面力学特性的研究、材料研究和钢桥面铺装体系研究等方面，并对进一步研究提出一些建议。

In recent decade, with the rapid development of transportation enterprise, many long-span bridges have been constructed or constructing, for deceasing load and increasing the span, the orthotropic steel deck is generally applied for the long-span steel bridge.

近十年来随着交通事业的快速发展，已建成或正在建设的大跨径桥梁逐渐增多，为了减小桥梁自重和增大跨径，大多数钢桥的桥面板一般采用正交异性钢桥面板。

Furthermore,the effect of microstructure parameters on theeffective moduli of the three-orthotropic materials is analyzed.

此外，对材料的细观结构参数对损伤的影响进行了数值比较。

Fracture is caused by sheet's tensile instability, Hill's totalized instability theories and Swift's diffuse instability theories which based on continuous mechanics are applied to isotropic blank; Marciniak and Kuczynski's theories are applied to orthotropic blank, which introduced thickness imperfections normal to the principal stress and strain direction as a groove pre-existing defects in the material. The stability of each part of blank at each moment is described by numerical method, and the results are shown by computer simulation, thus the fracture in sheet forming can be predicted preciously.

拉裂是由于拉伸失稳引起的，以连续体力学为基础的Hill集中性失稳理论和Swift分散性失稳理论应用到各向同性板料进行失稳判定；将Marciniak和Kuczynski的凹槽损伤失稳理论应用到正交各向异性板料拉伸失稳判定，对板料各处在成型过程中不同时刻的稳定性进行数值化描述，并运用计算机仿真技术进行直观的表现，可以准确地预测板料成型中可能出现的拉裂现象。

Secondly, in the dissertation, the theories and methods of calculation on bridge deck system were discussed, and bridge deck system simplified as a beam was analyzed with the theory of elastically supported continuous beam and the method of deformation compatibility; through the theory of orthotropic plate being applied to analyzing the bridge deck system which was assumed an elastically supported continuous plate, certain theoretical derivations were made and some calculation formulas were given.

其次，本文研究论述了桥道系的计算理论和方法，将桥道系简化为梁，利用弹性支承连续梁理论和变形协调法进行分析；把桥道系视为弹性支承连续板，利用正交异性板理论进行分析，作了一定的理论推导，并给出了相关计算公式。

A model for the optimization design of orthotiopic steel deck plate was piovided, in which the structural cost was taken as the objective function, and the rigidity and allowed stress of the orthotropic steel deck plate were taken as the constraints.

以计入结构材料重量和焊缝体积的结构造价为目标函数，建立了考虑局部受力和稳定容许应力约束的钢桥面加劲板优化分析模型。

The optimized results have shown that the mechanical demands of the orthotropic steel deck stiffened plate are more easily met with larger span of cross beam and thicker top plate and U-stiffeners.

优化结果表明：适当增加横隔板间距、加大顶板和U肋厚度能更有效地满足结构受力和局部稳定要求。

Based on elastic theory, in this paper cast-in-situ RC hollow flat slab is converted to orthotropic plates by the pseudo-plates theory and the equilibrium equation is built.

本文在经典弹性薄板理论的基础上，通过拟板法将双向空心板等效为正交各向异性的实心板，建立无梁空心楼板的平衡方程。

Using stiffness equivalent theory of elastic mechanics,this paper simplifies the complex fiber reinforced plastic pavement deck to a piece of material well-proportioned orthotropic deck,and builds the elastic equivalent model,so as to put forward a kind of simple and canonical method for such problems.

利用弹性力学的刚度等效原理，将结构复杂的复合材料路面板简化为材料均匀的正交异性板，建立弹性等效模型，为此类问题的具体分析提供一种简明规范的方法。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥