On the base of the large general finite element software,the dynamic model of cold rolling process of the bearing ring is established,the non-linear finite element method for large deformation is used to simulate and analyze the elastic-plastic deformation of metal workpiece.

In order to discuss whether the hysteresis of the finger seal(FS) is affected by plastic deformation,the elastic-plastic deformation about FS was researched.

A calculating formula of the elastic and elastic-plastic stage is deduced and numerical values of the elastic-plastic deformation of the TY320 Bulldozer s ROPS/FOPS are calculatedin the paper.

Measurement of the elasto-plastic deformation around crack-tip for studying material damage or micro-crack initiation and obtaining early damage information of material is important for preventing micro-crack initiation and propagation.

In this thesis, a new concept, reservoir numerical simulation of fluid-solid coupling flow with sand erosion and sand particulates migration, has been put forward, based on mechanisms of dynamic coupling of fluid flow and sand particulates erosion, migration, deposition, bridge plug and wall rock elasto-plastic deformation in recovery process of oil well.

It is very important to measure the elastic and plastic deformation in the strain concentration zone for studying damage or the micro-crack generating and avoiding macro-crack generating and growing in materials.

Effect of elastoplastic deformation on stainless steel welding components in low-temperature aging;

In this paper we presented a review on the current situation of mechanical stability of wellbore in mud shale bed and for the first time introduced large deformation theory into the calculation of elastoplastic deformation of wellbore and adjacent rock.

The results show that the larger the elastic plastic deformation,the greater the influence on partial lubrication.