A study on the relationship between the industrial structure adjustment and employment elasticity in lanzhou 兰州市产业结构调整与就业弹性问题研究
Finally for all the above aeroelastic problems , distributed parallel computation is accomplished 最后对以上气动弹性问题的数值计算进行了基于微机网络的分布式并行计算研究。
Using this method , the coupled fields for an elastic elliptical inhomogeneity with a screw dislocation under infinite longitudinal shear is examined 这种分析方法，为求解复杂多连通域的平面弹性与热弹性问题提供了一条有效途径。
The aim of this paper is to search for practical nonlinear viscoelastic relations and the solution approach for viscoelastic problems in the range of infinitesimal strain 本文的研究目的在于寻找小变形范围内工程实用的非线性粘弹性本构关系及非线性粘弹性问题的求解方法。
The elastic recovery correspondence principle can be applied to analyze the concrete , which makes a new research method for the concrete nonlinear viscoelastic problem 弹性回复对应原理可以推广应用于混凝土材料，从而为研究混凝土材料的粘弹性问题提出了一个新的研究方法。
According to elasticity recovery correspondence principles and different boundary condition , the solution of a nonlinear viscoelastic problem can be obtained if the solution of the corresponding nonlinear elastic problem is known 通过对应原理，根据不同的边界条件，只要知道了非线性弹性问题的解，就可以求出非线性粘弹性问题的解答来。
The results calculated with b - l and j - k turbulent models are compared with experimental data . with the examples of some straight wing and sweep wing , the static aeroelastic characterictics of the wing are studied 分别以某平直机翼和后掠机翼为算例，对机翼的静气动弹性问题进行研究，部分计算结果和有关文献的结果进行了比较，吻合很好，验证了本文方法及程序的正确性。
Now , we have done much research in the problem of liner elastic model , and obtain much achievement . but less research have been done in the problem about nonlinear model . the research on the back analysis of nonlinear model is in the stage of start 对于线弹性问题的反分析已经做了大量的工作，并且取得了很多成果，但对于非线性问题的位移反分析目前只是处于研究和探讨阶段，没有形成成熟的理论和方法。
The research of this dissertation is focused on how to simulate numerically the steady and unsteady subsonic , transonic and supersonic viscous flows around wing and aircraft by computational fluid dynamics method . on this basis , several kinds of aeroelastic problems of aircraft are investigated 本文的主要工作是利用计算流体力学( cfd )方法，数值模拟机翼和全机的定常及非定常粘性绕流，并在此基础上耦合结构动力学方程研究了飞行器的多种气动弹性问题。
By laplace transforming the governing equation of the problem of unidirectional fiber reinforced composite materials , the formulae for predicting the viscoelastic relaxation moduli in laplace transformed domain are obtained . according to correspondence principle of viscoellastic mechanics and elastic , mechanics , the results of effective moduli for several s are obtained by using the finite element method of the homogenization . then effective relaxation moduli should be curve - fitted , according to the viscoelastic relaxation modulus formulae of many viscoelastic materials 首先对单向纤维增强复合材料粘弹性问题的控制方程进行laplace变换，在像空间s中利用均匀化理论建立宏观松弛模量的laplace变换泛函形式，根据粘弹性-弹性对应原理，用均匀化问题的有限元方法预报单向纤维增强复合材料在相空间中多个离散点的本构关系，然后根据典型粘弹性材料的松弛模量具有的函数形式进行曲线拟合，再通过对拟合出的函数进行laplace逆变换，从而再回到时间t域，就得到了单向纤维增强复合材料的松弛模量。
