Abstract: The influence of low pressure on polymer-bonded explosive (PBX) interfacial damage under temperature fluctuation was investigated. Firstly, a 2D geometric model was built with the Voronoi method. The change of interfacial bonding property was studied under temperature changes, with the particles con...
Abstract: A design method of impact failure criteria for Timoshenko beams under support excitations was established. The system motion equations were solved and combined with the boundary conditions to give the natural frequency equations and the mode shapes for the system. To overcome the difficulty of solvi...
Abstract: With the crack line analysis method for stress intensity factors, the stress intensity factor of a finite-width plate with a mode-Ⅰ center crack subjected to uniform stress on the crack surface near the crack tip was studied analytically. Through analytical solution of the stress field and correctio...
Abstract: The structural stability of solutions to a class of double diffusion perturbation models for porous media defined in bounded domains was studied. The nonhomogeneous Robin boundary conditions were imposed on the model. With the energy analysis method and the differential inequality technique, some us...
Abstract: To solve the problem that the measured modal parameters and the finite element analysis modal parameters do not match in damage identification, the residual force vector formula and the minimum rank update formula based on the modal reduction method were derived. Through the calculation of the resid...
Abstract: Low dissipation shock-capturing methods, including the popular Roe scheme, will encounter the shock instability phenomenon in the computation of the multidimensional strong shock wave problems. This will seriously affect the schemes’ accurate simulation of the hypersonic flow problems. The small per...
Abstract: The dynamic behavior of a power-law fluid droplet passing through a T-junction micro-channel and phase diagrams of droplet flow patterns were studied with the lattice Boltzmann method. The effects of power-law exponent n on the droplet deformation characteristics including the neck thickness, the dr...
Abstract: The growth and dynamic characteristics of convection patterns with horizontal flow for Prandtl number Pr=0.72 were numerically simulated with 2D basic equations of fluid mechanics. The results show that, for given relative Rayleigh number Rar=5(Rayleigh number Ra=8 540) and Reynolds number Re=22.5,...
Abstract: To understand the influence of the interaction between contaminated bubbles on the hydrodynamic characteristics, with a surfactant as the contamination medium, the interface parameters, the flow field and the wake characteristics of bubbles with different spacings were investigated with the improved...
Abstract: The characteristics of intermittent turbulence induced by wall surface roughness in a finite Stokes layer were investigated numerically, including the velocity gradient at the wall, the velocity profile and the Reynolds stress, etc.， with a transitional Reynolds number Re=495.The results show that,...
