Abstract
This paper presents a computer-based methodology for generating two-dimensional optimal shapes. The objective is to form mechanical/structural parts, under general loading conditions and restraints, of minimum weight with the stresses throughout the parts as close to the allowable limits as possible. This study uses a thresholding approach that requires minimal human intervention to generate optimal configurations. The process starts by creating an initial design which encompasses all the specified loads and restraints. Using finite element techniques, the complete part is discretized. Then a set of procedures is used to iteratively modify the shape by removing elements from the finite element model. In this study a Bi-Directional Thresholding, BDT, is developed for the removal of elements. After the BDT is performed, connectivity of the remaining elements is checked and maintained. Then a smoothing algorithm is implemented to get rid of the irregularities in the model. Several examples are reported to illustrate the effectiveness of the BDT, connectivity check, and smoothing algorithms.
Original language | English |
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Pages | 239-245 |
Number of pages | 7 |
State | Published - 1989 |
Event | Proceedings of the 1989 ASME International Computers in Engineering Conference and Exposition - Anheim, CA, USA Duration: 30 Jul 1989 → 3 Aug 1989 |
Conference
Conference | Proceedings of the 1989 ASME International Computers in Engineering Conference and Exposition |
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City | Anheim, CA, USA |
Period | 30/07/89 → 3/08/89 |