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The splitting pinball method for contact-impact problems

1993; Elsevier BV; Volume: 105; Issue: 3 Linguagem: Inglês

10.1016/0045-7825(93)90064-5

1879-2138

Ted Belytschko, I-Sheng Yeh,

Mechanical stress and fatigue analysis

In the pinball contact-impact algorithm, the interpenetration check is simplified by enforcing it only on a set of spheres embedded within the elements. In the splitting pinball adaptation of this algorithm, the parent pinball is split into a hierarchy of descendent pinballs whenever interpenetration of the parent pinballs is detected. The interpenetration check is then applied to the descendent pinballs and contact forces are generated. This provides a better representation of the contact surface for thin shell elements. The implementation of the method with a penalty contact method is described and examples are given. It is also shown that the method easily and automatically handles edge-to-edge, edge-to-surface, and self-surface contact without any user specification.