查询词典 crack

In this paper, the problem of an arbitrarily shaped planar crack which is perpendicular to the interface of bimaterial and loaded by interior normal pressure is studied by means of the method of hypersingular integral equation in three dimensional fracture mechanics.

利用三维断裂力学的超奇异积分方程方法，对双材料空间中重直于界面的平片裂纹Ⅰ型问题进行了研究。

The propagation direction of thermal fatigue crack has some crystal orientation and is along 〈110〉 direction in { 111 } plane.

合金热疲劳裂纹扩展具有一定的晶体学取向，沿{111}面〈110〉方向即与枝晶生长方向呈45 角扩展。

They are turquoise, because it can discolour; opal, which is also prone to discolouration and can crack; and pearls, as they're very porous and, once damaged, lose their lustre.

他们是绿松石，因为它可以变色；蛋白石，也是容易变色，可以打；而珍珠，由于他们非常多孔，一旦受损，失去光泽。

When pressed they admitted they had withheld the full meaning of the crop circle, in order to discombobulate the establishment so that the cover-up over the presence of Planet X might crack

当时间紧急的时候，他们承认过隐瞒了麦田圈的真正含义，目的是打乱权利集团的计划，以便破除他们对行星x存在的真相进行的隐瞒。

The kernel is adding a discontinuous function for the standard approximation to account for the crack. A feasible technique is adopted for dealing with multiple cracks and intersecting cracks.

本文研究扩展有限元方法，通过改进标准有限元的单元逼近函数，使之能够表达单元内的几何不连续，从而实现切割和断裂的模拟。

The basic theory of extended finite element method are expounded particularly, and given a class of enrichment displacement functions---the exponent discontinuous function which is presented to simulate the discontinuous character resulted from discontinuity such as crack.

本文详细阐述了扩展有限元法的基本原理，提出一类附加位移形函数-指数型间断函数来描述由裂纹所导致的位移不连续规律。

XFEM;the exponent discontinuous function;crack

扩展有限元法；指数间断函数；裂纹

On the basis of the idea of partition of unity, a discontinuous function and the two-dimensional asymptotic crack-tip displacement fields are added to the displacement interpolation formula to account for discontinuity of the contact surface and stress singularity near the contact surface tip respectively. Governing equations are deduced by virtual work principle and the integral of the discontinuous functions are calculated by Gauss integral through sub-elements cut by discontinuous surface.

该方法基于单位分解思想，在位移插值形式中引入不连续函数和裂尖渐近位移场函数分别反映接触面的不连续性和接触面端点的奇异性；根据虚功原理建立有限元支配方程，接触面不连续函数积分采用分区高斯积分的方法。

It is efficient to describe the distribution rule of early crack of concrete by the fractal theory.

早期的裂缝往往是后期宏观开裂的引发源，对混凝土结构的外观、耐久性乃至安全性产生不利的影响[3]。

When the djinn of ashes had gone, Al-faq left his home in the crack between night and day.

在最临近的村庄里，妖精一家一家地跑去贴着耳朵对睡梦中的人说：海边有一个圣人。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。