Shape Optimization of Structures Considering Varying Geometrical and Material Parameters

Abstract

A new approach based on fuzzy controlled integrated zero-order technique aimed toward finding the optimized shape of precast structural parts is presented in this paper. To obtain an optimized form that meets fully stressed design criteria, the proposed methodology uses perpendicular expansion and contraction of the design boundary of the structural part. ‘Design elements’ and ‘automatic mesh generation’ concept have been inducted to approach in order to achieve smooth refined mesh at every iteration. The shape is changed in accordance to a target maximum shear stress value assumed beforehand. The convergence and mobility of nodes is controlled by a fuzzy membership function. The methodology has been coded as a software in FORTRAN language and works well in ascertaining the optimal shape of precast structural parts without consuming a lot of computational memory, time, or other resources. Several examples have been taken with varied initial conditions such as geometry flaws, composite beams, flat tops, and so on, to show the utility of the suggested method. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.