This paper describes a generic algorithm for iso-line, iso-strip, iso-surface, and iso-volume visualization of unstructured 3D meshes, such as finite element models. The four types of visualization are integrated in the same data representation. Consequently iso-volume contouring is trivially implemented as a combination of iso-strip and iso-surface patches of surfaces. The algorithm can handle...

The problem of rectangular objects packing into a semi-endless strip is under consideration. Here we propose to solve this problem by linear cutting approximation that may be presented as block structure of packing. Sometimes it becomes necessary to rearrange elements inside linear cutting blocks. The determined method of “reconstruction”(REC) proposed below helps to get solutions close to opti...

Cutting and packing (C & P) problem is to allocate a set of items to larger rectangular standardized units by minimizing the waste. Bin packing, strip packing and cutting stock problem is well-known classical C & P problem. An overview is provided of several meta-heuristics algorithms of swarm intelligence from the literature for the 2D C & P problem. The objective of this paper is to present a...

In this paper, the use of beam search and look-ahead strategies for solving the strip packing problem (SPP) is investigated. Given a strip of fixed width W, unlimited length L, and a set of n circular pieces of known radii, the objective is to determine the minimum length of the initial strip that packs all the pieces. An augmented algorithm which combines beam search and a look-ahead strategie...

The profitability of forging and stamping plants is directly related to the economical use raw materials. For sheet metal stamping, material losses can account for a significant proportion (up 20-40%), so reducing them even by few percent saves thousands tonnes metal. An indicator utilisation efficiency rationality cutting factor η, defined as ratio weight workpiece rate consumption its product...

A new approach based on vector field clustering for tool path optimization of 5-axis CNC machining is presented in this paper. The strategy of the approach is to produce an efficient tool path with respect to the optimal cutting direction vector field. The optimal cutting direction maximizes the machining strip width. We use the normalized cut clustering technique to partition the vector field ...