Sheet metal forging process for thin-walled structures with crossed ribs: process design, simulation and a forming experiment

Bin FENG, Ji HE, Shuhui LI, Bin GU, Zhongqin LIN
2021 METAL 2021 Conference Proeedings   unpublished
A sheet-forging process is proposed to form thin-walled structures with crossed-ribs. To solve the problem of grid distortion in finite element simulations, an element reconfiguration strategy that combines a stress-strain map solution and element reconstruction is applied, and typical samples with crossed-ribs are designed to verify the accuracy of simulation. Through the compression tests, the true stress-strain curves are achieved under different strain rates. By applying the FE method, the
more » ... low behavior of the materials is investigated, and the non-linear relationship between reduction amount and rib height is obtained. According to the plastic deformation behaviors, more uniform deformation in the later forming period leads to more material flowing into the rib grooves.
doi:10.37904/metal.2021.4112 fatcat:3vb6plqfhjehrh4xfl36eahw5a