Electromechanical response of Hyperelastic-Piezoelectric composites using Direct FE2 multiscale modeling
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Chattrairat, A.; Nakaramontri, Y.; Phromjan, J.; Clemens, F.; Aimmanee, S.
ผู้เผยแพร่: Elsevier
ปีที่เผยแพร่ (ค.ศ.): 2026
วารสาร: Composites Part A: Applied Science and Manufacturing (1359-835X)
Volume number: 201
หน้าแรก: 109416
นอก: 1359-835X
eISSN: 1878-5840
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
Piezoelectric soft materials generating electrical signals in response to mechanical deformation have been of great interest over the past decade, owing to their potential applications in human activity sensing and energy harvesting. In this study, a multiscale Direct FE2 method is introduced to investigate the electromechanical behavior of hyperelastic composites reinforced with piezoelectric BaTiO3 inclusions—a scenario not readily addressed by sequential multiscale modeling due to the simultaneous presence of hyperelasticity and piezoelectricity. The study explores variations in inclusion volume fractions, geometries, and alignment orientations for stretchable sensor applications. A two-dimensional square material domain and a soft gripper structure are analyzed, concurrently in the macroscale and microscale representative volume element of the composite. The results for circular inclusions demonstrate that this highly efficient multiscale approach yields accurate predictions that align closely with analytical solutions. Under uniaxial loading conditions, the electromechanical properties exhibit nonlinear behavior as the inclusion volume fraction and shape aspect ratio change, while shear deformation has a negligible effect. The rectangular fiber-like piezoelectric inclusions significantly enhance electric potential, with the highest values observed at a 90° alignment, outperforming other less asymmetrical aspect ratios, including circular inclusions. Additionally, aligning inclusions along the electrical poling direction is not always optimal, depending on the applied loading mode—tension, compression, or shear. Notably, at a fiber orientation of 54.74° relative to the principal stress direction, the composite’s mechanical and electrical responses become indistinguishable from those of randomly oriented inclusions. These findings provide valuable insights into the ferroelectric behavior of soft hybridized solids, contributing to the advancement of materials for applications in robotic systems and flexible electromechanical devices. © 2025 Elsevier Ltd.
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