Symmetric contact and sliding interface algorithms for intense impulsive loading computations Original Research Article

This paper presents symmetric contact and sliding interface algorithms for intense impulsive loading computations due to high velocity impact and explosive detonation. These algorithms are presented for both 2D and 3D geometry, and they include the effect of friction. These algorithms can be used in a fully automatic mode, where the user is not required to input the sliding interfaces, or they can be used with user specified interfaces. Also included are the interface determination algorithms and the searching algorithms. These algorithms are an extension of an earlier 2D algorithm that is dependent on the order that the interface nodes are processed. The new symmetric algorithms are not order-dependent. In addition to providing more accurate computations, the new symmetric algorithms are better suited for parallel processing.