TY - GEN
T1 - NUMERICAL PREDICTION OF THE EFFECTIVE MECHANICAL BEHAVIOR OF INTERPENETRATING PHASE COMPOSITES COMPRISING ARCHITECTED NITINOL CORES
AU - Ilyas, Shahzaib
AU - Abu Al-Rub, Rashid K.
AU - El-Khasawneh, Bashar
AU - Zaki, Wael
N1 - Publisher Copyright:
© SMASIS 2023.All rights reserved.
PY - 2023
Y1 - 2023
N2 - This work focuses on the computational investigation of 3D interpenetrating phase composites (IPCs) consisting of an architected shape memory alloy (SMA) microstructure embedded in an elastic-plastic second phase. The SMA functional phase consists of Nitinol (NiTi) for which the constitutive material behavior is simulated using a user-defined material subroutine (UMAT) in Abaqus finite element software. Beam-based and mathematically driven triply periodic minimal surfaces (TPMS) architectures are considered for the NiTi functional phase. IPC unit cells are identified and modeled considering idealized periodic boundary conditions (PBCs). The mechanical and functional properties of the unit cells are evaluated using volumetric homogenization. The effective mechanical response is evaluated and analyzed as a function of NiTi volume fraction considering various loading conditions. The results show that NiTi morphology significantly affects the elastic stiffness, which varies monotonically with NiTi content. Among the geometries considered for the NiTi cores, TPMS cores having a Schwarz Diamond topology resulted in the highest effective axial stiffness and bulk moduli, whereas TPMS IWP topologies resulted in the highest strain recovery.
AB - This work focuses on the computational investigation of 3D interpenetrating phase composites (IPCs) consisting of an architected shape memory alloy (SMA) microstructure embedded in an elastic-plastic second phase. The SMA functional phase consists of Nitinol (NiTi) for which the constitutive material behavior is simulated using a user-defined material subroutine (UMAT) in Abaqus finite element software. Beam-based and mathematically driven triply periodic minimal surfaces (TPMS) architectures are considered for the NiTi functional phase. IPC unit cells are identified and modeled considering idealized periodic boundary conditions (PBCs). The mechanical and functional properties of the unit cells are evaluated using volumetric homogenization. The effective mechanical response is evaluated and analyzed as a function of NiTi volume fraction considering various loading conditions. The results show that NiTi morphology significantly affects the elastic stiffness, which varies monotonically with NiTi content. Among the geometries considered for the NiTi cores, TPMS cores having a Schwarz Diamond topology resulted in the highest effective axial stiffness and bulk moduli, whereas TPMS IWP topologies resulted in the highest strain recovery.
KW - finite element analysis
KW - Interpenetrating phase composites (IPCs)
KW - Nitinol (NiTi)
KW - smart materials
KW - triply periodic minimal surfaces (TPMS)
UR - https://www.scopus.com/pages/publications/85179620866
U2 - 10.1115/SMASIS2023-111103
DO - 10.1115/SMASIS2023-111103
M3 - Conference contribution
AN - SCOPUS:85179620866
T3 - Proceedings of ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023
BT - Proceedings of ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023
T2 - 16th Annual ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023
Y2 - 11 September 2023 through 13 September 2023
ER -