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hollow spheres
相关语句
  空心球
    Elastodynamic Solutions of Hollow Cylinders and Hollow Spheres under Radial Deformation
    空心圆柱和空心球在径向应变情形的弹性动力学解
短句来源
    DETERMINATION OF EFFECTIVE MODULI OF COMPOSITE OF HOLLOW SPHERES IN A MATRIX
    含空心球复合材料有效模量的确定
短句来源
    The elastodynamic solutions of hollow spheres, which are made of elastic, piezoelectric and pyroelectric materials, respectively, for spherically symmetricproblems are also obtained.
    给出了弹性、压电和热释电三种材料组成的球面各向同性空心球在球对称变形情形的弹性动力学解。
短句来源
  “hollow spheres”译为未确定词的双语例句
    The solving method for hollow spheres is just similar with that for hollow cylinders.
    所用的方法与求解空心圆柱问题相似。
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  hollow spheres
New approaches to stimuli-responsive polymeric micelles and hollow spheres
      
This article briefly describes some new approaches to stimuli-sensitive polymeric micelles and hollow spheres, which were developed in the authors' laboratory in recent years.
      
Hollow spheres of PNIPAM network were then obtained by biodegradation of the PCL core.
      
Both the core-shell spheres and hollow spheres show reversible size dependence on temperature change because of the phase transition of PNIPAM around 32°C.
      
(3) Complexation-induced micellization and transition between the micelles and hollow spheres.
      
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In this paper,three displacement functions are introduced and expended in terms of spherical harmonic functions. It is found that the problem of a spherically isotropic elastic body is eventually reduced to an independent ordinary differential equation of second order and a set of coupled ordinary differential equations of second order. If we involve in the effect of the surrounding fluid by considering the fluid dynamic pressure, we should only solve an algebric eigenvalue problem and can easily calculate the...

In this paper,three displacement functions are introduced and expended in terms of spherical harmonic functions. It is found that the problem of a spherically isotropic elastic body is eventually reduced to an independent ordinary differential equation of second order and a set of coupled ordinary differential equations of second order. If we involve in the effect of the surrounding fluid by considering the fluid dynamic pressure, we should only solve an algebric eigenvalue problem and can easily calculate the free vibration frequencies of the spherically isotropic hollow sphere of various thickness submerged in infinite incompressible ideal fluid. Finally, we give some examples on different conditions. Especially, when the original problem is inverted into an isotropic one, the results are comparedwith those in papers concerning this problem.

本文引入三个位移函数并用球面调和函数展开,可将球面各向同性弹性力学的基本方程转化成一个独立的二阶常微分方程和另一个耦合的二阶常微分方程组.采用液动压力表示流体与球壳的相互作用,可以把无限大不可压缩流体中任意厚度球面各向同性球壳的自由振动频率计算归结为一个代数特征值问题.文中计算了若干种情况下球壳的频率,在各向同性情形与有关文献作了比较。

When the temperature in a hollow sphere suddenly changes,a dynamicstress appears at each point in it.With the reflecting effect of stress wave on the internaland external boundaries there exist very high dynamic stresses in the hollow sphere. Inthis paper the response and distribution of thermodynamic stresses in a hollow sphere aresolved by means of an analytical method.

空腔球体内温度发生突然变化时,球体内各点将同时呈现动应力。由于应力波在内外边界处的反射效应,这时将在空腔球体内产生很高的动应力。该文利用一种解析方法求解空腔球体内的热动应力的响应和分布规律。

On the basis of equivalent media theory in composite mechanics,the effective moduli of a composite of hollow spheres in a matrix are determined by four phase spheroidal model.The relations of bulk modulus and shear modulus with the volume fraction of hollow spheres of a composite have been derived in this paper.For the isotropic material,the Young's modulus of material are also determined and the present results are compared with the experimental and theoretical data given by Huang et al.It has shown...

On the basis of equivalent media theory in composite mechanics,the effective moduli of a composite of hollow spheres in a matrix are determined by four phase spheroidal model.The relations of bulk modulus and shear modulus with the volume fraction of hollow spheres of a composite have been derived in this paper.For the isotropic material,the Young's modulus of material are also determined and the present results are compared with the experimental and theoretical data given by Huang et al.It has shown that the Young's modulus of composite predicted by the present model in the whole range of volume fraction of hollow spheres are nearer to experimental results than the Huang's model.In addition,by considering the effects of voids on properties of material,some better theoretical results which is quite agreement with experimental data can be obtained.

用四相球模型确定了含空心球复合材料的有效模量性质,得到这类材料的有效体积模量和有效剪切模量同空心球体积比的关系.在各向同性材料的假设下也确定了材料的有效杨氏模量,并同Huang等人给出的理论及实验结果进行了比较.

 
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