Misc

Airbag

An airbag inflates below a rigid cylinder, causing the cylinder to fly into the air.

Damping

A simple model of a tire is placed under gravity loading and drops onto rigid solid elements. Fully integrated shell elements are used for the tire to prevent hourglassing from damping out the model. Additionally, rigid solid elements are used for modeling the ground instead of a rigidwall because the rigidwall will also damp the system because of its' perfectly plastic contact definition. Thus, to damp out the bouncing, global damping is applied to the system.

Defo2Rigid

Two spheres are connected to wires to form two pendulums. One sphere is in a horizontal position with gravitational acceleration, base acceleration and is given an initial velocity in the vertical direction. The other sphere is in the vertical direction. The spheres are treated as rigid bodies while no contact or deformation occurs (i.e., when the horizontal pendulum swings down towards the vertical pendulum). The spheres are switched to deformable through a restart file so that they become flexible during contact.

Interface

A cube, one solid element, strikes and rebounds from an elastic plate. In the first run, an interface file (d3iff) is created that contains the position of the bottom segment of the cube. In the second run, the cube mesh refinement increases from 1 element to 8 el ements. The interface file is then used to control the position of the bottom of the new cube as if it underwent the same impact as the cube in run one.