The coefficient of earth pressure at rest K0 is a state soil variable correlated with relative density Dr. As previously conducted tests could not guarantee zero lateral deformation in the sand specimens, significant errors occurred test results. In this paper, centrifugal model method used to study varying densities. specimens densities are prepared by pluviation, and 50 g-ton force applied. S...

there are many parameters that affect the sheet hydroforming process such as fluid pressure, material properties, interfacial friction between blank and tool surfaces, etc. in this paper, a fem-based taguchi method is used to determine the effects of forming parameters on the quality of part formability in the process of hydrodynamic deep drawing assisted by radial pressure. four important form...