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Improved Optimal Approximated Unfolding Algorithm of a Curved Shell Plate with Automatic Mesh Generation  

Ryu C.H. (서울대학교 공학연구소)
Shin J.G. (서울대학교 조선해양공학과)
Publication Information
Korean Journal of Computational Design and Engineering / v.11, no.3, 2006 , pp. 157-163 More about this Journal
Abstract
Surfaces of many engineering structures, especially, those of ships are commonly made out of either single- or double-curved surfaces to meet functional requirements. The first step in the fabrication process of a three-dimensional design surface is unfolding or flattening the surface, otherwise known as planar development, so that manufacturers can determine the initial flat plate which is required to form the design shape. In this paper, an algorithm for optimal approximated development of a general curved surface, including both single- and double-curved surfaces, is established by minimizing the strain energy of deformation from its planar development to the design surface. The unfolding process is formulated into a constrained nonlinear programming problem, based on the deformation theory and finite element. Constraints are subjected to the characteristics of the fabrication method. And the design surface, or the curved shell plate is subdivided by automatic mesh generation.
Keywords
automatic mesh generation; optimal surface development; strain energy; nonlinear deformation theory; finite element;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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