A warhead configuration for forming a hole through a wall of a target, the warhead configuration comprising a charge of explosive material and a liner. The interactive multi-mesh modeling system may employ a variety of techniques for taking a source computer-generated representation of an object and providing the automatic creation, management, and maintenance of instances or versions of the source, and any information defined thereon or associated therewith, that are suitable for several different tasks. The layers are arranged in sequential order such that contaminants having a higher molecular weight are preferentially removed by the first layers.