According to the theory of force-free moment and by means of the sectional method of Materials Mechanics, this paper gives an analysis of and a solution to the meridional membrane stress of gyro shell in three cases.

The deformation curve of inflated airbag fabric and the membrane stress distribution were computed using the finite element method to simulate the process of airbag inflation under different pressures ranging from 0 to 50 kPa.

Explorations on the solution to membrance stress of full liquid vessel;

The measurement of thin film stress is always a problem with great difficulty.

According to the principle of substrate curvature method,an apparatus had been designed and refitted to measure the curvature radius of amorphous RGMF sample,then the thin film stress was calculated.

In order to meet the requirements of optical, electronic and mechanical performance of semiconductor products, it is necessary to measure thin film stress during the deposition.

Stoney formula and the corresponding approximate deducing with substrate curvature method are adopted to evaluate the film stress in several processes.

This paper first analyses the nature and features of the edge stress, and its differeces from and its relationswith the film stress, then points out the relationship between the edge stress and the strength of pressure vessel, andputs forward several detailed measures to treat the eege stress, and therefore solves the important problem in the ves-sel design.

The experimental results show that the film stress tu rns from compressive to tensile with the increase of Ar gas pressure, and the magnetic anisotropy has a close relationship with the depositi on conditions.