Design of functionally graded piezocomposite materials using topology optimization

Sandro L. Vatanabe, Glaucio H. Paulino, Emílio C.N. Silva

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Piezocomposite materials provides effective properties (elastic, piezoelectric, and di- electric) that produce a better performance than pure piezoelectric materials. In the optimization of a piezocomposite the objective is to obtain an improvement in its perfor- mance characteristics, usually by changing the volume fractions of constituent materials, its properties, shape of inclusions, and the mechanical properties of the polymer matrix in the composite unit cell. An interesting application for piezoelectric materials are energy harvesting devices which stores energy from the environment. This work presents designs of functionally graded piezocomposite materials using topology optimization and homoge- nization method in order to maximize the electromechanical coupling coefficient k and the mechanical-to-electrical energy conversion, aiming at energy harvesting applications. The Functionally Graded Material (FGM) concept is applied to reduce the stress concentration between the constitutive materials and to investigate the influence of material gradation. The homogenization method is implemented using the graded finite element concept which takes into account the continuous gradation inside the finite elements. The material model used is based on the SIMP (Solid Isotropic Material With Penalization) and the optimiza- tion problem is solved by using the MMA (Method of Moving Asymptotes) algorithm.

Original languageEnglish (US)
Title of host publication13th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference 2010
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869549
DOIs
StatePublished - 2010
Externally publishedYes
Event13th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, MAO 2010 - Ft. Worth, TX, United States
Duration: Sep 13 2010Sep 15 2010

Publication series

Name13th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference 2010

Conference

Conference13th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, MAO 2010
Country/TerritoryUnited States
CityFt. Worth, TX
Period9/13/109/15/10

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Design of functionally graded piezocomposite materials using topology optimization'. Together they form a unique fingerprint.

Cite this