In order to set the criterion of The load-deflection curves of the parts of shallow shell Kind, for different materials, different radius (single curve surface), different arc height (hyperboloid) and different thickness, are obtained using automatic testing device.

This paper presents a spline mixed element method for bending analysis of shallow shells.

An identification model of shallow shell structures is established first.

There are three difficult problems in solving a large deflection displacement of orthotropic shallow shells with such boundary conditions as simply supported at some diagonal sides and free at other diagonal sides.

The conntribution of this article lies in tersely figuring out an important achievement of non-moment of force for flat shell by proceeding from the accurate solution in the 3rd document, which was already obtained by applying displacement method by B.

Matrix perturbation methods for eigenvalue analysis of vibration of compressible fluid-solid;

A perturbation method for weakly damped systems repeated eigenvalues;

An analytical solution to tunnels with over-under-excavated surface based on perturbation method;