Research on Simplified Method for Calculating Ultimate Longitudinal Strength of Ship Structures;

Study on longitudinal strength calculation method of hull standing above an explosion bubble;

Resaerch for damage mode that reduce longitudinal strength of service bulk carriers;

The checking method of longitudinal strength for ships using deflections of ships;

In the paper, the background to research a standard-type of truck roll-on/roll-off ship navigating in upper Yangtze river and San Gorge Reservoir and the determination of both loads for calculating general longitudinal strength and the ratios of dimensions L/D and B/D are briefly presented, the effect of double bottom and general arrangement on the general longitudinal strength is analyzed.

The rupture in the middle of bulk cargo is due to the corrosion and fatigue of components in long term usage, which leads the sec tion modulus to reduce and the general longitudinal strength to weaken.

Analyze and conclusion is made to the particular of this type of vessel when investigating the overall longitudinal strength of different type of caisson less than the length 190m.

The result of the experiment indicated that the strength limit and elastic modulus of the material can increase after annealing treatment within the temperature range, but at the same time, the material became crisp and its plasticity declined remarkably.

Using thermal strength experiment to test and determine the pivotal parameters such as ultimate strength and thermal stress at the complicated condition of transient heating is very important for reliability estimation,life prediction of aerospace materials and security design of high-speed flight vehicle.