By means of analogy of single side crack of finite size lath, through approximate solution of the quartic equation,two curves of b/R_1 = 1/20 and b/R_1→0 have been found, then the curve of F (a/b, 15/760) drawn by using imerpolation method, final the value of F (5/15, 15/760) of crack size suitable for the degester calculated.
XRD indicates that the sample is wurtzite(hexagonal) structured ZnO with lattice constants of a=3.249 ,c=5.206 and lattice symmetry group(S.G)of P63mc(186). SEM shows that the length,the width and the thickness of the battens are about 20 micrometer,50~300 nanometer and 30 micrometer,respectively.
This paper reports on the feasibility of using mathematical optimisation to determine the ideal window slat angles for different prevailing wind conditions.
The proposed optimisation methodology employs computational fluid dynamics software (FLUENT), coupled to a computationally economic optimisation algorithm (Dynamic-Q), to determine the optimal slat angles.
The objective was to evaluate the epidemiology and population dynamics of a Dermanyssus gallinae infestation during a one-year period, in both amultilevel aviary system and a one-floor plastic slat system.
In this paper the solutions of von Herman for elastic large deflection problem are classified as the several solutions of Schrodinger equation for quantum eigenvalues problem, and we present the transform form elastic large deflection problem from non-linear equation into linear equation. Thus, we create favourable conditions of the adoption of converse scattering method and Backlund transformation. We also discuss the large deflection problem of long and narrow plate.
The series expressions of stresses and displacements of both anisotropic and unidirectional fiber-reinforced composite plates with cracks are derived. Each term of the series can satisfy the equilibrium equations, the equation of compatibility and boundary conditions of forces on the crack suifaces and other boundary conditions of forces can be satisfied by the variational method to determine the stress intensity factors. Finally, the computational results about strip tension , compact tension and three poi...
This paper presents an experimental analysis to the slip-plate calculation of local stability of the pit-shaft wall constructed with integrally-poured reinforced concrete. The result is a practical calculation method, in which the integral plane-plate of the shaft plays a fundamental role and the influence of the boundary must be taken into consideration.