In shipbuilding, one of the most tedious and human skill dependent operations is plate forming for producing compound curved plates. Line heating can be gainfully applied for fabrication of such plates. The surface properties of these compound curved plates have a significant effect on the line heating process. For generation of the heating line pattern to achieve the target surface, the surface properties are required. The strain distribution of a curved surface needs to be evaluated to determine the extent of line heating. In this present work, a suitable program has been developed to determine the surface properties (i.e., generation of required grid points, Gauss curvature, principal curvatures, and their directions) and the heating line pattern by using B-spline surface theory. For getting the initial template (blank) and strain distribution over the plate, a numerical technique and an optimized strain field distribution approach based on minimization of total strain energy has been used. The theoretically generated surfaces compared fairly well with the experimentally produced compound curved surfaces using the numerically obtained line heating patterns.
A Study on Generation of Compound Curved Surfaces by Line Heating Using Oxyacetylene Gas Flame
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Biswas, Pankaj, Mandal, N. R., and O. P Sha. "A Study on Generation of Compound Curved Surfaces by Line Heating Using Oxyacetylene Gas Flame." J Ship Prod 24 (2008): 180–189. doi: https://doi.org/10.5957/jsp.2008.24.4.180
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