Analysis and numerical simulation on stability in irregular section of ribs bending process;

Integral wing-skin panel with grid-type ribs is a kind of light-weight structure, which applied in the aerospace field widely.

This paper describes the influence of vchations in dimensions, rib design and lug position of gridson the discharge performance of automotive batteries.

To do grid design,it needs to consider comprehensively the application of battery,casting level,mould casting ability,and to analyze the structure and interval among the ribs.

Through analyzing the relationship between reinforcement rotio of the member in bending with double layer of reinforcement and its extensibity, mechanism of fracture and comparing with the large eccentrial compressed column, the rational reinforcement ratio of the member in bending with double layer reinforcemont is determine

An experimental study was conducted to assess the pressure on the facing and tensile force of reinforcement of reinforced earth retaining walls.