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A level-set based IGA formulation for topology optimization of flexoelectric materials
- Source :
- Computer Methods in Applied Mechanics and Engineering. 313:239-258
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- This paper presents a design methodology based on a combination of isogeometric analysis (IGA), level set and point wise density mapping techniques for topology optimization of piezoelectric/flexoelectric materials. The fourth order partial differential equations (PDEs) of flexoelectricity, which require at least C 1 continuous approximations, are discretized using Non-Uniform Rational B-spline (NURBS). The point wise density mapping technique with consistent derivatives is directly used in the weak form of the governing equations. The boundary of the design domain is implicitly represented by a level set function. The accuracy of the IGA model is confirmed through numerical examples including a cantilever beam under a point load and a truncated pyramid under compression with different electrical boundary conditions. Finally, we provide numerical examples demonstrating the significant enhancement in electromechanical coupling coefficient that can be obtained using topology optimization.
- Subjects :
- Mathematical optimization
Partial differential equation
Discretization
Mechanical Engineering
Topology optimization
Computational Mechanics
General Physics and Astronomy
Boundary (topology)
02 engineering and technology
Isogeometric analysis
01 natural sciences
Computer Science Applications
010101 applied mathematics
020303 mechanical engineering & transports
Level set
0203 mechanical engineering
Mechanics of Materials
Applied mathematics
Point (geometry)
Boundary value problem
0101 mathematics
Mathematics
Subjects
Details
- ISSN :
- 00457825
- Volume :
- 313
- Database :
- OpenAIRE
- Journal :
- Computer Methods in Applied Mechanics and Engineering
- Accession number :
- edsair.doi...........660157830d094fcb2d05ec5e69fd94b4