In order to simulate the acceleration pulse in impact tests, the design method of the acceleration pulse generator by the multi-segment tubes with different thicknesses based on the theory of metal tubes press expansion was researched.

Bulging Deformation Analysis and Safety Assessment of Coking Tower;

The skirt from bottom to top of the tower was changed,and a nip convention out ektexine of coke tower was added to change the accepting force with coke tower in order to avoid the bulging deformation and cold crack with welding line below the coke tower.

In slashing running conditions,the bulging deformation of coke drums may appear after some years.

Tests on swelling deformation of expansive soils;

Effect of swelling deformation on stability of expansive soil slope

This paper founds the relation of porosity, permeability and swelling deformation under considering swelling deformation made by coal adsorption gas, and by analysis it can be concluded that as gas stress in the coal bed increases, the swelling deformation becomes bigger, the porosity being much smaller, so as to weaken the permeability of the coal bed and make it difficult for gas flow.

There ′re many factors that influence the result of compression test for cast iron, among which the internal friction of material and the drum deformation of sample are most important.

After many years run, the drum deformation and cucurbit deformation appear.