Design of three dimensional isotropic microstructures for maximized stiffness and conductivity

摘要: The level-set method of topology optimization is used to design isotropic two-phase periodic multifunctional composites in three dimensions. One phase stiff and insulating whereas the other conductive mechanically compliant. objective maximize a linear combination effective bulk modulus conductivity composite. Composites with Schwartz primitive diamond minimal surfaces as interface have been shown maximal conductivity. Since these are not elastically their stiffness under uniaxial loading varies direction load. An composite presented similar which at least 23% stiffer than structures when loaded uniaxially along weakest direction. Other new near-optimal presented, proving capablities for microstructure design.