|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications III
||Effects of Void Configuration on the Overall Thermal and Mechanical Behavior of Porous Materials: A Numerical Modeling Approach
||Yu-lin Shen, Mohammad G. Abdo, Binh T. Pham, Isabella J. Van Rooyen
|On-Site Speaker (Planned)
Additively manufactured materials typically contain lack-of-fusion porosity and other defects. The techniques may also be used in conjunction with nuclear fuel system design to fabricate variable or functionally graded porous structures. Understanding how the pore configuration affects the overall material properties calls for detailed numerical modeling analyses. In this study a finite element based micromechanical approach is undertaken, with attention devoted to various shapes (aspect ratios), sizes, and periodic spatial distributions of the existing voids. Starting with one pore per unit cell, we gradually increase the level of complexity of the geometric model. With uniform spherical pores, the effective thermal response is found to be insensitive to the spatial distribution of the voids. The elastic property, however, can be significantly affected. When the aspect ratio of the pores deviates from unity, anisotropy becomes important and the underlying geometry plays an increasing role in dictating the overall thermal and mechanical behavior.
||Modeling and Simulation, Additive Manufacturing, Composites