|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Design for Mechanical Behavior of Architectured Materials via Topology Optimization
||Efficient Microstructural Design: A Topological Sensitivity Approach
||Krishnan Suresh, Tej Kumar
|On-Site Speaker (Planned)
Microstructural optimization relies on combining continuum finite element analysis, and a topology optimization technique such as Solid Isotropic Material with Penalization (SIMP). Here, we pursue an alternate optimization strategy based on the concept of topological sensitivity. Closed-form expressions for topological sensitivity of the elasticity tensor are exploited to develop a 3D topological level-set strategy towards microstructural design. A salient feature of the proposed strategy is that it traces the Hashkin-Shtrikman curve (for bulk and shear modulus), eliminating the need for volumetric constraint. This leads to well-conditioned stiffness matrices, and therefore fast convergence of iterative solvers. The proposed strategy is illustrated through several numerical examples.
||Planned: Supplemental Proceedings volume