Contact

Newton Cradle

This example demonstrates momentum and kinetic energy conservation in an explicit dynamic analysis with contact, featuring three cases of dropping one, two, or three balls. Users can modify the Genesis files in the input deck to test these configurations, with a default setup of one raised ball.

Bullet Collision

This example demonstrates analytic functions and user-defined output by simulating a bullet with initial angular and translational velocities colliding with a block, producing non-dimensional torque output.

Analytic Plane

This numerical example illustrates how to set up a problem using analytic surfaces, featuring a cylinder hovering above one analytic surface and positioned to the right of an angled analytic surface.

Curved Surface Friction Behavior

This problem investigates the frictional contact behavior of explicit analysis in Sierra with curved surfaces, using a cylindrical mass rolling down a slope. It measures slip at various slope angles and frictional coefficients, comparing the results to ideal behavior to assess the frictional model’s accuracy.

Plate Indentation

This test adapts a problem from the ABAQUS Example Problem Manual, where a punch creates an indentation in a thick plate. Due to displacement size limitations, the punch is fixed while the plate pushes up against it, and the test now examines the full geometry instead of a quarter.

Ball Bearing Pull

This example presents three methods for solving a preload problem: implicit statics with the FETI linear solver, implicit statics with a nodal preconditioner, and explicit quasistatic mode.