In light of the three-dimensional effect of split Hopkinson pressure bar(SHPB) device for large diameter rock specimen,solid simulation is conducted with three-dimensional nonlinear dynamic finite element code;

This paper makes an analysis of the influence of the three-dimensional effect upon the measuring accuracy of the two-dimensional photoelastic techniques. On the basis of Aben's theory of the propagation of polaized light in the photoelastic medium, a new concept "quasi-Plane character of the plane photoelasticity" and a new "Quasi-plane"measuring method in the plane photoelasticity are derived for the first time.

2. Excavation has strong three-dimensional effect,every object of study reach the mini-mum or maximum at the excavation pit corner or centrual sectional plain.

Research of this paper is carried out closely combined with Guomao subway station, which has many construction difficulties and risks in Beijing Metro Line 10. Focus on main theoretical problems encountered during construction, the influence of metro tunneling by Drift-Pile-Beam-Arch(Drift-PBA) method on adjacent piles is studied from three-dimensional effect, time effect and probability analysis of differential settlements of adjacent piles respectively, and some control measures for metro tunneling adjacent piles are put forward.

The size of the three-dimensional effect zone is about the half of the thickness, and the length of crack (a/W) affects the SIF distribution through the thickness and the size of the three-dimensional effect zone lightly.

In the present simple manifold, the principal three-dimensional effect is a transfer of flow to the inviscid core region from the high-velocity jets adjacent to the sides which are parallel to the magnetic field.

Three-dimensional effect on transonic rectangular cavity flows

The use of transparent rotating scans, comparable to a block of glass, generates a three-dimensional effect.

Because it accounts for the three-dimensional effect, this model is named as the complete depthaveraged model.

In this paper the quasi-steady lifting line method is used to calculate the dynamic characteristics of propeller operating in the non-uniform wake of the ship hull, taking into account both the viscous and the three dimensional effects. A method based on constructing an equivalent two-dimensional hydrofoil for the blade section is suggested to estimate the pressure distribution along the chord. The calculation results of propeller characteristics and pressure distribution along the section chord show good...

In this paper the quasi-steady lifting line method is used to calculate the dynamic characteristics of propeller operating in the non-uniform wake of the ship hull, taking into account both the viscous and the three dimensional effects. A method based on constructing an equivalent two-dimensional hydrofoil for the blade section is suggested to estimate the pressure distribution along the chord. The calculation results of propeller characteristics and pressure distribution along the section chord show good ageement with experiments. The computer program for above mentioned purpose can be provided to the primary ship design.

A microcomputer graphics system for three-dimensional reconstructon is escribed. By means of this system, the technique of three-dimensional reconstruction from serial secton data of biological structure has been developed.As an example of its application, anosseous labyrinth of the finless black porpoise (Neophocaena asiaeorientalis) was reconstructed from its sections.The resulting image is shaded for giving the display a true three-dimensional effect.It can be displayed and rotated on a color monitor...

A microcomputer graphics system for three-dimensional reconstructon is escribed. By means of this system, the technique of three-dimensional reconstruction from serial secton data of biological structure has been developed.As an example of its application, anosseous labyrinth of the finless black porpoise (Neophocaena asiaeorientalis) was reconstructed from its sections.The resulting image is shaded for giving the display a true three-dimensional effect.It can be displayed and rotated on a color monitor to view all its surfaces.The shaded image can also be printed out by a printer on which we heve deueloped aso-ftwarefor printing image.

The interaction between moving bodies and fluids, a classical problem of fluid dynamics, is reexamined from the viewpoint of vorticity dynamics. In this way, we may gain some new insight into the mechanism of the interaction and can be led to a series of results which are of practical value. The present paper studies the action of a moving surface to vorticity field and gives a general incompressible theory of the generation of vorticity at the surface and its dissipation in the fluid. It is found that there...

The interaction between moving bodies and fluids, a classical problem of fluid dynamics, is reexamined from the viewpoint of vorticity dynamics. In this way, we may gain some new insight into the mechanism of the interaction and can be led to a series of results which are of practical value. The present paper studies the action of a moving surface to vorticity field and gives a general incompressible theory of the generation of vorticity at the surface and its dissipation in the fluid. It is found that there are two types of vorticity sources, the global one depends only on the acceleration property of the surface geometry, while the local one exists in both accelerated and uniform motion, consisting of tangential sources from pressure gradient and a three-dimensional effect of the surface curvature, and a normal source due to the divergence of the two-dimensional vorticity on the surface.