||CMES: Computer Modeling in Engineering & Sciences, Vol. 86, No. 1, pp. 53-70, 2012
||Full length paper in PDF format. Size = 511,115 bytes
||Topology optimization; Continuum structure; Optimality Criterion; Gray-scale elements; SIMP method.
||This study proposes a new topology optimization method for continuum structures, which includes modified heuristic optimality criteria in conjunction with the SIMP scheme to suppress gray-scale elements occurred in topology optimization of continua through smoothed Heaviside function. In the process of numerical implementation, the gray scale elements are suppressed to approach the binary bounds of 0 or 1 by utilizing the proposed approach and the corresponding convergence criterion. Two typical numerical examples are used to demonstrate the effectiveness of the proposed method in suppressing the gray-scale elements with intermediate densities, as well as the efficiency of this method in the numerical procedure.