Study on influence of curvature deformation of ground surface in coal mine on free way;

Based on analyzing the mechanism of laser peen forming(LPF),a theory of pure bending with small deflection of metal sheet induced by laser peening was presented,the estimated formula of sheet deformation curvature after LPF was derived,and the mathematical model among radius curvature of deformation,depth of residual stress and the material property was established.

Due to the distinct difference in tensile and compressive properties,the position and deformation curvature of curved neutral layer will change with time for the!strata in a creep state.

In this paper,theories of flexibility difference and deformation curvature which identify structural damage are introduced.

Error analysis on DEM-based terrain curvatures models;

Numerical method research for shakedown of rolling-sliding contact on variable curvature surface;

In order to consider bending and torsion effect of curved box girder varying with transverse axis and longitudinal axis,a spatial finite element method considering initial curvature and variable curvature was presented.

Box-girder bridge has become increasingly popular in construction of curved bridge, the conformation of it has been presented the characteristic of variable curvature and variable height.