Hydromagnetic stability of plane Poiseuille flow of an Oldroyd fluidActa Mechanica -  Tập 143  - Trang 155-164 - 2000
R. N. Ray, A. Samad, T. K. Chaudhury
The linear stability of plane Poiseuille flow of a conducting Oldroyd liquid in the presence of a transverse magnetic field is studied. The fourth-order Orr-Sommerfeld equation governing the stability analysis in this case is solved numerically by a spectral method.
 Computation of the bounds on the elastic moduli of a fiber-reinforced composite by Monte Carlo simulationsActa Mechanica -  Tập 217  - Trang 257-267 - 2010
Chun-Ron Chiang
Bounds on the effective elastic moduli of a fiber-reinforced composite are studied. The composite is composed of infinitely long, parallel, equal-sized circular cylinders (fibers) randomly embedded in a matrix. Based on the variational principles and by employing the cylindrical inclusion solutions as trial functions, the bounds are determined through Monte Carlo simulations. Comparisons are made ......  hiện toàn bộ
 A nonlinear hyperbolic free boundary value problemActa Mechanica -  Tập 81  - Trang 221-226 - 1990
R. Fazio
The present paper is concerned with the application of a non-iterative transformation method to the numerical solution of a nonlinear hyperbolic free boundary value problem. Making use of the similarity analysis approach to the hyperbolic model describing time dependent velocity impact to nonlinear inhomogeneous thin rods we recover a free boundary value problem. Since exact solutions are known on......  hiện toàn bộ
 Elastic Gaussian wave packets in isotropic mediaActa Mechanica -  Tập 71  - Trang 95-114 - 1988
A. N. Norris
The theory of Gaussian wave packet (GWP) propagation in elastic materials is developed. The GWP solutions are in the form of localized disturbances with Gaussian spatial envelopes at any instant in time. The method is explicitly time dependent, but is conceptually no more difficult than time harmonic ray theory. The equations of propagation and evolution are very similar to those of standard, elas......  hiện toàn bộ
 High-order lubrication theory in channels and tubes with variable geometryActa Mechanica -  Tập 233  - Trang 4063-4081 - 2022
Kostas D. Housiadas, Christos Tsangaris
Lubrication theory is used widely due to its simplicity and accuracy in many circumstances such as for the modeling of thin fluid films, the motion of particles near surfaces, and the flow in narrow geometries and configurations. Here, we present an extension to the classical lubrication theory to study the laminar flow of an incompressible and highly viscous simple Newtonian fluid in microfluidic......  hiện toàn bộ
 Fracture analysis of superconducting composites with a sandwich structure based on electromagnetic–thermal coupled modelActa Mechanica -  Tập 230  - Trang 4435-4451 - 2019
Y. Q. Wang, K. F. Wang, B. L. Wang, L. Zheng, C. W. Zhang
This paper analyzes a multilayer structure with a superconducting layer in the center and strengthening layers in the outer part. This represents a generalized structural form of multilayered high-temperature superconducting cable structures for space solar power station application. An analytical model for considering the influences of thermal–mechanical–electrical–magnetic coupling and the tempe......  hiện toàn bộ