Derivative swift-Hohenberg方程的初边值问题解的存在性

运用压缩影射原理证明了DS-H方程的初边值问题的局部解的存在性和唯一性.     

BUCKLING TEST AND OPTIMUM DESICN OF FIHED REINFORCED COMPOSITE PLATES UNDER COMPRESSION

In this paper,the conelusion that the expermiental results coineide with theoretical analysis has been got(?)test of(?)coniposite(?)plates.It is confirmed that the(?)loads of(?)buckling theoretieal formula of(?)plate are reliable.The(?)of optinial(?)tent of matrix and optimal off-axis which make(?)composite phaes eachbiggest critical loads are also discussed(?)paper the(?)of(?)beused in the design for the products.     

Influence of linearly varying density and rigidity on torsional surface waves in inhomogeneous crustal layer

The present work deals with the possibility of propagation of torsional surface wave in an inhomogeneous crustal layer over an inhomogeneous half space. The layer has inhomogeneity which varies linearly with depth whereas the inhomogeneous half space exhibits inhomogeneity of three types, namely, exponential, quadratic, and hyperbolic discussed separately. The dispersion equation is deduced for each case in a closed form. For a layer over a homogeneous half space, the dispersion equation agrees with the equation of the classical case. It is observed that the inhomogeneity factor due to linear variation in density in the inhomogeneous crustal layer decreases as the phase velocity increases, while the inhomogeneity factor in rigidity has the reverse effect on the phase velocity.