Numerical Analysis on the Stress and Strain Fields of Continuous Multi-Point Forming Process.

The forming characteristics of continuous multi-point forming are described through their very principles. FEA model of spherical surface is established. The stress and strain states in different zones of forming process are discussed. Spherical surface equivalent stress field and plastic strain field in the forming process are simulated and analysed. Sheet metal's stress and strain field in the load zone are simulated from the aspect of bidirectional bending. The simulation results are analysed in detail. The simulation results are seen to be in accord with the stress and strain states in bend forming. The forming state of sheet metal can be observed clearly through the numerical analysis of stress and strain fields and dependable forming schedules can be set up. [ABSTRACT FROM AUTHOR]