Hi guys,
I'm trying to characterize a powder regarding an empiric experiment. The experiment consist in compress powder in a cylinder with a tapped hole, and when the powder is consolidated, untap the hole, and increase a force acting in the upper surface of the powder to achive the collapse of the consolidated powder, to obtain the value of force needed to "brake" the consolidated product. You can see the sequence bellow:
I'm working with the EEPA contact model, and as I understand, to increase the capabilty of the product to hold loads once consolidated, I need to increase the value of Surface Energy, this give the force that we need to "separate" particles after consolidated.
Well, I'm trying to increase the value up tu exagerated values, (50-100) and the product falls throw the hole in the setep 4, it seems that the product has not enough cohesion force to suppert de load.
As I understand, increasing the value of Surface Energy, you can increase (in negative way) the Minimum force (fcp, bellow), and theorically, the particles, after compression, should need more force to separate between them. Is this approach not correct?
