Study of variable blank holder force curve for rectangular box drawing based on numerical simulation

Most workpieces are non-axial symmetry complex shape such as rectangular box in engineering practice, so it has much academic value and significance to study deep drawing for a rectangular box.

The paper dealt with the optimal design problem of stock layout patterns of saw cutting blanking for rectangular pieces of a single size,proposed a kind of optimal layout method of rectangular pieces of a single size,pointed out the mathematical basis,selective conditions of the optimal solution and layout disposal of the particular solution.

The paper aims at solving the problems of incision of the rectangular pieces,such as the waste of the stuff and the energy sources,the low cutting efficiency and quality.

Based on actual blanking technological of rectangular pieces,an application system of optimal layout of rectangular pieces and cutting simulation has been carried out,which is accomplished under the integrated environment of VC++6.

In this paper,expriments are done to study the effct of cylinder blankhold surface on rectangle box part drawing,and the effect law of between cyllinder surface and forming limits,strain distribution in deformation area are proposed.

The rectangular parts optimal layout based on the particle swarm optimization;

In order to achieve the optimal layout of rectangular parts with dynamic constraints,a new rectangular optimal layout method was proposed based on a new decoding algorithm-Height Adjustment algorithm(HAA) and niche genetic algorithm(NGA).

The deep drawing process of AZ31 magnesium alloy rectangular parts was researched by numerical simulation and experiments.