Elastic-plastic Inherent strain method is proposed to simulate the welding of a thick spherical stem bulkhead of a submarine, which eliminates the deficiency of the thermal Elastic-plastic FEM that only suits for small-scale welding calculations.

Optimization design of domed bulkhead with nonaxisymmetry sphere-conical transitional annulated shell;

Variant kinds of reinforced structure in connecting place of internal domed bulkhead and pressure hull have a very large effect on the stress on pressure hull.

This paper makes the Autofrettage analysis of thick wall spherical shell of linear strength material based on unified strength theory.

This paper presents a new method to calculate the limit load of thick wall cylinder and thick wall spherical shell based on Yus Unified Strength Theory and a Unified solutions are obtained.

Calculation of non-stationary thermal stress of low carbon steel thick hollow sphere based on theory of thermoviscoelastisity under non-constant temperature;

In this paper, the limit analysis of thick hollow sphere is realized by using the Coulomb Mohr yield criterion.

The influence of different Cu contents on the graphite morphology,matrix structure and mechanical properties of the heavy section nodular iron was investigated by using a self-developed mini experimental device,which can be used to simulate the cooling environment of the heavy casting,and by adding respectively 0,0.