The unsymmetrical hull is dispersed into some uniform units applying the thin-walled beam theory. Based on an analysis of flexural-torsion coupling vibration, the natural frequencies and principal modes are calculated by transfer matrix method, then the influence of warping on dynamic characteristics of ship structures is carried out by computer examples.

The tyre coping and floor surface profiles and the bevel cut lines of lateral surface were dispersed into datum points with the required accuracy,and the parameter equation of the cavity lateral surface was constructed using the fitting algorithm of blending rational Bézier surface.

In the spatial model, the railway structure and vehicle are dispersed into different elements, the dynamic equation of the coupling system is founded with the energy theory, and the vibration equation made up of the coupled matrixes of the system is also established.

Surrounding rock and anchorage body are modeled as eight-node, 3D solid elements, whereas shot concrete and lining are modeled as four-node, 3D shell elements.

This paper analyzes the deformation of the braided composite material driven by piezoelectric material with the finite element analysis software ANSYS.

In the analysis of this paper, tall frame is divided into space beam element, layered foundation is divided into finite layer, and the stiffness of a single pile is determined by Q-s curve.

4 samples were 08-BC,being closest to the international standard strain 97CNGX-9F isolated in Guangxi Province of China,with the discrete time rate of 2.708%±1.593 and 3.655%±1.197;

Themethod combines the deterministic optimization technique with the orthogonaloptimal experiment method to change the 2￣n vertices of the tolerance region into(n+1)constraint conditions,and uses nondifferentiable optimization to solve theDCTT problem directly.

The rate of the reduction of molecular oxygen from water with a low-capacity copper-containing electron-ion exchanger at various initial ionic forms, grain radii, and sizes of metal particles dispersed into pores.

The results indicate that the modified nanotubes can be easily dispersed into organic solvent such as chloroform and toluene in contrast with the unmodified nanotubes, which makes it easier to be assembled by LB technique.

The obtained emulsion particles are powdered by a freeze dry method and dispersed into poly(vinyl chloride) matrix by a melt blending.

Average population density ranged from 34 to 180 indiv.m-2; density declined during the rainy season as the population dispersed into freshly inundated areas.

The nano-SiO2 was dispersed into crylic acid resin by ultrasonic wave and high-energy ball milling, the influence of nano-SiO2 on shielding property of coatings was investigated.

After low rate physical users in the system are modeled as corresponding high rate virtual users, we construct the space-time signature vectors of virtual users.

Skin/stiffener structures are modeled as coupling of shell elements.

The honeycomb core is modeled as a thick plate whose transverse shear deformation is taken into consideraion based on a higher-order shear deformation theory, and the top and bottom laminated FRP composite faces are modeled as a very thin sheet.

The URV is then modeled as a passive joint and joints of the manipulator are modeled as active joints.

The antenna system and the two orthogonal channels are modeled as a two-port network.

This paper studies the geometrieal non-Linear problem of a stiffened plate and shell structure by the finite element method. The discrete elements used are triangular plate elements and beam elements. Both stresses due to the axial action of the beam and the membrane action of the plate are considered. Comoving coordinate system and incremental process are adopted and the effect of large deflection on loads is also discussed.

In this paper a space dynamic analisis of bending-torsional vibrations for cable- stayed girder bridge is proposed.The thin-walled box girder and rigid frame tower are disengaged in beam elements,which are connected at their nodes by the cables. The element stiffness matrix and mass matrix have been derived.As an example, the frequencies and the modes of bending-torsional vibrations of a cable-stayed bridge have been computed for determining its critical wind velocity.Finally the results of computation are discussed....

In this paper a space dynamic analisis of bending-torsional vibrations for cable- stayed girder bridge is proposed.The thin-walled box girder and rigid frame tower are disengaged in beam elements,which are connected at their nodes by the cables. The element stiffness matrix and mass matrix have been derived.As an example, the frequencies and the modes of bending-torsional vibrations of a cable-stayed bridge have been computed for determining its critical wind velocity.Finally the results of computation are discussed.

The stress of the connective part of the thin-wall beam system is analysed by the finite element method. In the analysis,the connective part is divided into many triangular plate elements. For the membrane stress state the constant strain element (the displacement function is the linear function of cartesian coordinates) is used and for the heading stress state the constant curvature element (the displacement function is the cubic function of the area coordinates)is used. Then,as a shell the connective part...

The stress of the connective part of the thin-wall beam system is analysed by the finite element method. In the analysis,the connective part is divided into many triangular plate elements. For the membrane stress state the constant strain element (the displacement function is the linear function of cartesian coordinates) is used and for the heading stress state the constant curvature element (the displacement function is the cubic function of the area coordinates)is used. Then,as a shell the connective part is computed. A node of the plough frame (the connective part that consists of the beams with box section) and a node that consists of the beams with channel section are computed and analysed by this method.