【摘 要】
：
In order to achieve highly accurate and efficient numerical calculations of structural dynamics, time collocation method is presented. For a given time interval
【机 构】
：
School of Sciences,School of Aviation and Astronavigation Engineering
论文部分内容阅读
In order to achieve highly accurate and efficient numerical calculations of structural dynamics, time collocation method is presented. For a given time interval, the numerical solution of the method is approximated by a polynomial. The polynomial coefficients are evaluated by solving algebraic equation. Once the polynomial coefficients are evaluated, the numerical solutions at any time in the interval can be easily calculated. New formulae are derived for the polynomial coefficients,which are more practical and succinct than those previously given. Two structural dynamic equations are calculated by the proposed method. The numerical solutions are compared with the traditional fourth-order Runge-Kutta method. The results show that the method proposed is highly accurate and computationally efficient. In addition, an important advantage of the method is the simplicity in software programming.
其他文献
利用相对论平均场理论描述中子星的液体区域,Fermi气体模型或者FMT,BPS和BBP模型描述中子星外壳,分别称为Fermi gas+RMF和RMF*.计算了中子星性质并且和相对论平均场理论给出
本文推导了逐事件快度间隔的起伏与逐事件快度关联的关系. 分析表明:快度间隔分析中新的和有意义的部分是推广的两粒子快度关联矩.对于一些特殊的两粒子和矩阶数这些矩有明确
A Burgess Shale-type biota is, in part, characterized by a wide diversity of taxa and soft-part preservation.Each provides unique historical insights into early
利用非对称核物质状态方程及同位旋相关的量子分子动力学模型对有限核112Sn和132Sn在不同温度下多重碎裂的同位旋效应进行了研究,发现随着温度的升高同位旋效应逐渐消失,并给
A mathematical model for the undercooling of the metal droplet during the rapid solidification is established, by which the factors that influence the undercool
By studying the existence problem of locally extremal Beltrami differential posed by F. Gardiner and N. Lakic, we introduce a new definition of the local bounda
Carbide-derived carbon (CDC) is a form of carbon produced by reacting metal carbides, such as SiC or TiC, with halogens at temperatures high enough to produce f
Least squares support vector machines (LS-SVMs), a nonlinear kemel based machine was introduced to investigate the prospects of application of this approach in
This paper deals with the cyclicity of a kind of degenerate planar polycycles through a saddle-node P0 and two hyperbolic saddles P1 and P2, where the hyperboli
This paper gives a thorough theoretical treatment on the adaptive quasilikelihood estimate of the parameters in the generalized linear models. The unknown covar