旋转流体的实验研究

本文是作者近几年在旋转流体实验室模拟方面做的主要工作，研究涉及气动转台上，旋转流体对流涡旋的运动，水动转台上，旋转流体斜压波表面流动的变化，不稳定性结构，三维温度结构，急流的三维结构，地形的影响等诸多方面的问题。部分实验结论与大气实际观测结果有着极好地相似。     

正交异性平面内的椭圆孔或裂纹系问题

应用Ｆａｂｅｒ级数展开和各向异性体平面问题复应力函数的方法，对于含有任意个椭圆孔或裂纹的正交异性平面，给出了孔周应力场解或孔附近裂纹应力强度因子解，其特例与前人结果一致．     

汽轮机转子的温度场及热应力场计算

利用积分变换法导出了蒸汽温升率连续变化时汽轮机转子的温度场和热应力场计算公式。本公式可直接应用于转子的应力监测与控制。和差分法相比，解析法的数据处理速度快，能满足快速监测、及时跟踪与控制的要求。关键词：汽轮机转子；温度场；热应力场     

压电材料平面应力状态的直线裂纹问题一般解

研究了含直线裂纹系的压电材料平面应力问题单个裂纹和双裂纹问题的封闭解答表明，在裂纹尖端，应力、电场强度和电位移有１／２阶的奇异性并与前人结果比较了产生电场奇异性的物理因素     

平面运动刚体的动能基点

平面运动刚体的动能基点刁海林（广西农业大学林学院，南宁５３０００１）平面运动刚体的动能等于随质心Ｃ平动的动能与绕质心ｃ转动的动能的和，即对刚体上任一点Ａ可否使下式成立呢？显然，一般情况（２）式不能成立，下面将证明，对某些特殊的点（２）式成立。使（２）...     

Turbulence,vortex and external explosion induced by venting

The process of explosion venting to air in a cylindrical vent vessel connected to a duct, filling with a stoichiometric methane-oxygen gas mixture, was simulated numerically by using a colocated grid SIMPLE scheme based on k-epsilon turbulent model and Eddydissipation combustion model. The characteristics of the combustible cloud, flame and pressure distribution in the external flow field during venting were analyzed in terms of the predicted results. The results show that the external explosion is generated due to violent turbulent combustion in the high pressure region within the external combustible cloud ignited by a jet flame. And the turbulence and vortex in the external flow field were also discussed in detail. After the jet flame penetrating into the external combustible cloud, the turbulent intensity is greater in the regions with greater average kinetic energy gradient, rather than in the flame front ; and the vortex in the external flow field is generated primarily due to the baroclinic effect, which is greater in the regions where the pressure and density gradients are nearly perpendicular.     

非均匀弹性材料中反平面的运动裂纹

用解析方法研究了非均匀弹性材料中反平面运动裂纹问题。首先采用余弦变换求解非均匀材料的基本方程，然后根据混合边值条件建立裂纹运动的对偶积分方程，再把对偶积分方程化为第二类Fredholm积分方程。给出了数值算例，计算结果表明材料的非均匀性对动应力强度因子有较大的影响。     

平面Poisson外边值问题

证明平面调和函数的Dirichlet外问题解存在唯一的充要条件；在此基础上，建立Laplace和Poisson外问题的等价边界积分方程；通过实例对传统的边界积分方程进行了讨论，表明它们不具有普遍适用性。     

平面八节点四边形理性元

推导平面八节点四边形理性有限元列式，采用具有直到四次多项式的平面问题的微分方程的解作为插值函数，算例结果表明平面八节点四边形理性有限元的有效性。     

ANALYSIS OF AN INCOMPRESSIBLE RUBBER WEDGE CONTACTING WITH A RIGID NOTCH

I. INTRODUCTION It is well known that rubber materials are much more important in modern society. It is, therefore,not surprising that a sizable number of investigations have been concerned with the rubber materials.Considerable attention has been paid …