A novel P-norm correction method for lightweight topology optimization under maximum stress constraints. (15th July 2016)

• Record Type: Journal Article
• Authors: Lee, Kangwon; Ahn, Kisoo; Yoo, Jeonghoon
• Is Part Of: Computers & structures. Volume 171(2016)
• Page Start: 18
• Page End: 30
• Publication Date: 2016-07-15
• Subjects: Lightweight topology optimization -- Maximum stress constraint -- Phase field design method -- Modified P-norm correction method -- Lower bound P-norm stress curve; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2016.04.005
• Languages: English
• ISSNs: 0045-7949

Abstract

Highlights: We present maximum stress constrained topology optimization using a novel P-norm correction method for lightweight design. A modified P-norm correction method is proposed to overcome the limitation of conventional P-norm methods by using the lower and the upper bound P-norm stress curve. Lightweight designs are presented for the L-shaped and the cantilever beam subject to yield strength constraint for the verification of the proposed method. Abstract: This study presents maximum stress constrained topology optimization using a novel P-norm correction method for lightweight design. The phase field design method with double well potential functions is used to implement structural optimization. We propose a modified P-norm correction method to overcome the limitation of conventional P-norm methods by employing the lower bound P-norm stress curve. As a result, maximum stress value can be considered as a design constraint effectively. For the verification of the proposed method, lightweight designs are presented for the L-shaped and the cantilever beam with the yield strength constraint.