Design and testing for shape control of piezoelectric structures using topology optimization. (15th August 2015)

• Record Type: Journal Article
• Authors: Luo, Quantian; Tong, Liyong
• Is Part Of: Engineering structures. Volume 97(2015:Aug. 15)
• Page Start: 90
• Page End: 104
• Publication Date: 2015-08-15
• Subjects: Shape control -- Optimization -- Mutual strain energy -- Moving iso-surface threshold; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2015.04.006
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Novel forms of response function for shape control of PZT structures using MIST. An efficient design update algorithm via searching for iso-surface threshold level. Experimental validation on optimum topological designs for shape control PZT plates. Abstract: This paper presents a numerical and experimental investigation into optimum topological design of morphing piezoelectric structures using a moving iso-surface threshold method. Proposed first is a novel formulation of the response function suitable for minimizing the error norm between desired and achieved shapes in the form of combined mutual strain energy densities. A design updating algorithm with an enhanced efficiency is then developed in searching for the optimum iso-surface threshold during iterations. Numerical results are presented for optimum topological material distribution for shape morphing of piezoelectric plates subjected to mechanical loading, one channel electrical voltage and a combination of both mechanical and electrical loadings. Experiments for selected optimal topological designs are conducted to validate the present response function and updating algorithm as well as the numerical results.