1 results about "Shell theory" patented technology

The application discloses a lofted curved surface shell structure optimization design method based on mixed sensitivity. The method takes the offset amount of the initial section curve control vertex coordinates as the design variable, sorts the section curve, unifies the parameter direction, inserts nodes and the like, and generates an initial lofted curved surface through lofting. The initial lofted curved surface is refined, and a refined lofted curved surface model for structure analysis is constructed. Structural response analysis is carried out based on the equal geometry Reissner-Mindlin shell theory. The derivative of the objective function to the design variable is decomposed into the accompanying analytical sensitivity term and the finite difference sensitivity term. Under the geometric constraint, the minimum flexibility is taken as the optimization target for iteration, and the optimized section curve, the lofted curved surface and the corresponding structural response are output. The application can retain the design intention driven by the section characteristic curve, reduce the design space dimension, improve the realizability of the sensitivity analysis and the optimization efficiency, and realize the high-quality and efficient optimization design of the shell structure.