The resulting earth pressure shows afamiliar linear distribution and the eatreal pressure at the base of the wall is less than that obtainedfrom the classiCal theory.
Wall cracks occur commonly in buildings of mixed structures in our country,and the main reason is the material contraction due to temperature variation.
Among the resisting crack columns, the resisting shear ability of walls can be considered to frame and wall cooperating together when the space among the resisting crack columns is small and there are at least two resisting crack columns in the walls.
High-resolution transmission electron microscopy observation indicates that the nanocapsules are hollow-structured with a wall thickness of about 6 nm.
例句来源
The results indicated that the polyvinyl acetal sponge modified by chitosan has an interconnected pore structure and the wall between large pores also has small pores.
例句来源
A glass carbon electrode modified with nickel-modified multi-wall carbon nanotubes (MWCNTs-Ni/GCE) was prepared.
例句来源
The XRD analysis indicated that the wood crystallinity of WMNC decreased, the MMT exfoliated and some nano silicate layers entered into the non-crystallized microfibrillar region of the wood cell wall.
例句来源
The SEM graphs of WMNC showed that some silicate grains were blocked in the wood cell lumen, some silicate layers adhered to the inner surface of the wood cell wall, and some exfoliated MMT layers even penetrated the wood cell wall.
In this paper a set of basic equations are deduced for curved thin wall beams from the following assumptions:(i) the longitudinal bending moment and the twisting moment in thin walls areto be neglected;(ii) the transversal strain and the shear strain in this walls are to be neglected. These assumptions are commonly used in the theory of prismatic folded structures. The formulas of rigidities of a curved I beam are given as an illustration.
Some viewpoints different from the so-called Bulk Flow Theory for the turbulence in the lubricant film by G. G. Hirs are put forward in this paper, Hirs said that under any kinds of combinations of the shear flow and pressure flow it is possible to express the interconnections between the shear stress exerted on the wall and the mean velocity Um relative to the wall by a simple relationship, thus deriving the calculating method. But as pointed out in this article, there are several evident examp...
Transonic flow in the throat region of hyperbolic Laval nozzles is analysed using the conformal curvilinear coordinate method. A solution to this type flow is given for the cases of different radii of wall curvature at the throat and different values of the ratio of the specific heats. The general behaviour of the transonic flow and Mach number distribution in the throat region are presented. This method gives fine accuracy. It can be applied in the designing of nozzles, especially, in the designing o...