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Citation link: http://nbn-resolving.de/urn:nbn:de:gbv:46-00103263-14
00103263-1.pdf
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Nesting-Algorithmus für irreguläre einfache Formen auf ebenen Flächenstücken


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00103263-1.pdf4.05 MBAdobe PDFView/Open
Other Titles: Nesting algorithm for irregular shapes on simple flat surfaces
Authors: Hagemann, Ralf 
Supervisor: Nake, Frieder
1. Expert: Nake, Frieder
2. Expert: Siekmann, Manfred 
Abstract: 
The leather processing industry requires considerable amounts of leather. The desire from an economic perspective is, that the leather waste is small. In small and medium-sized companies, optimizations are done from people by hand. The people try to place cutting parts on a leather skin, that the total of leather waste is small and they are arriving this with their experience. Larger leather processing companies are using computer-based optimization methods / algorithms (nesting algorithms) for leather cutting and cnc machines for optimization the cutting prozess. With this work, a new nesting algorithm for leather cutting optimization will be shown. The nesting algorithm is inspired by Human thought and action. The calculation and consideration of C-obstacle polygons have is an elementary component. By using enhanced methods for calculating polygon-union and polygon-difference it can be shown, that templates can be placed optimized on C-obstacle polygons with zero surfaces. Through a comprehensive analysis on the templates forms, the relative (the design) and absolute template size is shown, also that the approach and the evaluation of templates a fundamental part in nesting algorithms is.
Keywords: Nesting, C-obstacle, Minkowski, zero surfaces, cutting optimization
Issue Date: 8-Jun-2012
Type: Dissertation
URN: urn:nbn:de:gbv:46-00103263-14
Institution: Universität Bremen 
Faculty: FB3 Mathematik/Informatik 
Appears in Collections:Dissertationen

  

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