TY - JOUR
T1 - Spatial tailoring of a metal-ceramic composite panel subjected to high-speed flow
AU - Deierling, Phillip E.
AU - Zhupanska, Olesya I.
AU - Pasiliao, Crystal L.
N1 - Funding Information: P. Deierling would like to acknowledge the US Air Force Scholars Program and the Department of Defense High Performance Computing Internship Program (HIP) for supporting this work. Lastly, P. Deierling would like to thank the University of Florida Research and Engineering Education Facility (REEF) for providing facilities. Publisher Copyright: © 2020 American Society of Civil Engineers.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - In this paper, an optimization-based computational framework for the spatial tailoring of a metal-ceramic composite panel subjected to high-speed flow is discussed. The framework includes the modeling, evaluation, and optimization of the spatial material grading and thermostructural response of the metal-ceramic composites over a wide range of temperatures. The framework relies on micromechanics and a finite-element analysis (FEA) of representative volume elements (RVEs) to obtain the overall elastic, thermoelastic, and thermal properties of the graded microstructure as functions of temperature and spatial position. The effective thermostructural response of the airframe is analyzed using the FEA. The time-dependent thermal and structural loads are representative of a characteristic high-speed trajectory. Optimal multivariable material distribution is determined numerically using a constrained sequential quadratic programming (SQP) method of surrogate models to evaluate the response at multiple design locations efficiently. Three example cases are presented to showcase the developed framework. In all three example cases, optimal material variation and panel thickness are found such that they reduce the section mass when compared to a benchmark titanium (Ti-6Al-4V) structural skin and Acusill II thermal protection system (TPS) solution. Furthermore, these studies demonstrate that the use of metal-ceramic spatially tailored materials makes excellent material choices for operation in the high-speed environment.
AB - In this paper, an optimization-based computational framework for the spatial tailoring of a metal-ceramic composite panel subjected to high-speed flow is discussed. The framework includes the modeling, evaluation, and optimization of the spatial material grading and thermostructural response of the metal-ceramic composites over a wide range of temperatures. The framework relies on micromechanics and a finite-element analysis (FEA) of representative volume elements (RVEs) to obtain the overall elastic, thermoelastic, and thermal properties of the graded microstructure as functions of temperature and spatial position. The effective thermostructural response of the airframe is analyzed using the FEA. The time-dependent thermal and structural loads are representative of a characteristic high-speed trajectory. Optimal multivariable material distribution is determined numerically using a constrained sequential quadratic programming (SQP) method of surrogate models to evaluate the response at multiple design locations efficiently. Three example cases are presented to showcase the developed framework. In all three example cases, optimal material variation and panel thickness are found such that they reduce the section mass when compared to a benchmark titanium (Ti-6Al-4V) structural skin and Acusill II thermal protection system (TPS) solution. Furthermore, these studies demonstrate that the use of metal-ceramic spatially tailored materials makes excellent material choices for operation in the high-speed environment.
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U2 - 10.1061/(ASCE)AS.1943-5525.0001215
DO - 10.1061/(ASCE)AS.1943-5525.0001215
M3 - Article
SN - 0893-1321
VL - 34
JO - Journal of Aerospace Engineering
JF - Journal of Aerospace Engineering
IS - 1
M1 - 04020093
ER -