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931.
J.R. Fernández I.N. Figueiredo 《Journal of Mathematical Analysis and Applications》2008,343(2):951-964
We consider the approximation of a bone remodeling model with the Signorini contact conditions by a contact problem with normal compliant obstacle, when the obstacle's deformability coefficient converges to zero (that is, the obstacle's stiffness tends to infinity). The variational problem is a coupled system composed of a nonlinear variational equation (in the case of normal compliance contact conditions) or a variational inequality (for the case of Signorini's contact conditions), for the mechanical displacement field, and a first-order ordinary differential equation for the bone remodeling function. A theoretical result, which states the convergence of the contact problem with normal compliance contact law to the Signorini problem, is then proved. Finally, some numerical simulations, involving examples in one and two dimensions, are reported to show this convergence behaviour. 相似文献
932.
Summary A survey is outlined of some of the normal-state crystal properties of high Tc oxides that have been calculated recently by atomistic lattice simulations. 相似文献
933.
S. A. Gottlieb J. Kuti D. Toussaint A. D. Kennedy S. Meyer B. J. Pendleton R. L. Sugar 《Journal of statistical physics》1986,43(5-6):1105-1115
We present a large-scale Monte Carlo calculation of the deconfining phase transition temperature in lattice quantum chromodynamics
without fermions. Using the Wilson action, the transition temperature as a function of the lattice couplingg is consistent with scaling behavior dictated by the perturbativeα function for 6/g2>6.15.
Speaker at the conference; on leave from CRIP, Budapest. 相似文献
934.
935.
Linbo Zhang Tao Cui Hui Liu LSEC ICMSEC Academy of Mathematics Systems Science Chinese Academy of Sciences Beijing China 《计算数学(英文版)》2009,(1):89-96
We present a program for computing symmetric quadrature rules on triangles and tetrahedra. A set of rules are obtained by using this program. Quadrature rules up to order 21 on triangles and up to order 14 on tetrahedra have been obtained which are useful for use in finite element computations. All rules presented here have positive weights with points lying within the integration domain. 相似文献
936.
Chu‐Chang Chen Fuh‐Min Fang Yi‐Chao Li Long‐Ming Huang Cheng‐Yang Chung 《国际流体数值方法杂志》2009,60(1):79-93
The unsteady forces on a square cylinder in sinusoidally oscillating flows with non‐zero‐mean velocities are investigated numerically by using a weakly compressible‐flow method with three‐dimensional large eddy simulations. The major parameters in the analysis are Keulegan–Carpenter number (KC) and the ratio between the amplitude and the mean velocities of the approaching flow (AR). By varying the values of KC and AR the resulting drag and lift of the cylinders are analyzed systematically at two selected approaching‐flow attack angles (0 and 22.5°). In the case of the non‐zero attack angle, results show that both the drag and lift histories can be adequately described by Morison equations. However, Morison equations fail to correctly describing the lift history as the attack angle is zero. In addition, when the ratio of AR/KC is near the Strouhal number of the bluff‐body flow, the resulting drag is promoted due to the occurrence of resonance. Based on the results of systematic analyses, finally, the mean and inertia force coefficients at the two selected attack angles are presented as functions of KC and AR based on the Morison relationships. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
937.
D. C. Rapaport 《Journal of statistical physics》1990,58(3-4):775-791
The benefits of computer simulation can be enhanced by including animated displays showing the behavior of the systems under study together with the capability for responding immediately to parameter changes and other modifications requested by the observer. A modern computer graphics interface is used to facilitate user interactivity at a highly intuitive level. While hardware capability still limits the nature of problems that can be treated in this manner, the approach provides a much richer simulation environment than previously available. A number of examples of relevance to statistical physics are discussed, the majority of which are associated with cooperative behavior in interacting many-body systems.Dedicated to Cyril Domb-teacher and colleague-on his 70 th birthday. 相似文献
938.
Virtual simulation teaching is a new type of teaching mode in recent years, which is a fusion of multiple disciplines, multiple regions and multi-level laboratory teaching methods. Taking virtual simulation experiment platform construction of chemical engineering in Tianjin University as an example, this paper introduces the chemical safety knowledge, the integration of theoretical knowledge, the experimental content, the specific content of virtual simulation resources, and the characteristic of virtual simulation experiment platform. This platform provides a new model of efficient combination of virtual simulation resources and traditional teaching resources, which promotes the development of chemical laboratory teaching. 相似文献
939.
940.
In this paper we study the mean-square (MS) stability of the Milstein method for linear stochastic delay integro-differential equations (SDIDE) with Markovian switching by extending the techniques of [Z. Wang, C. Zhang, An analysis of stability of Milstein method for stochastic differential equations with delay, Computers and Mathematics with Applications 51 (2006) 1445–1452; L. Ronghua, H. Yingmin, Convergence and stability of numerical solutions to SDDEs with Markovian switching, Applied Mathematics and Computation 175 (2006) 1080–1091]. It is established that the Milstein method is MS-stable for linear stochastic delay differential equations (Wang and Zhang (2006); in the above reference). Here we prove that it is MS-stable for linear SDIDE with Markovian switching also under suitable conditions on the integral term. A numerical example is provided to illustrate the theoretical results. 相似文献