A SMA-based Wave Propagation Control Method for ۲D Nonlinear Phononic Lattices

سال انتشار: 1402
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 92

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شناسه ملی سند علمی:

ISME31_462

تاریخ نمایه سازی: 10 خرداد 1402

چکیده مقاله:

The functionalities of shape memory alloys (SMAs) structures in actively controlling the mechanical behavior of structures have recently been extended to periodic structures. However, the application of SMAs to tune the wave attenuation and dynamic properties of such structures has been limited to linear one-dimensional chains. Therefore, we aim to present a SMA-based active control scheme for the wave propagation in weakly nonlinear ۲D lattices. The Lindstedt-Poincare method is utilized in conjunction with the Bloch’s theorem to obtain the analytical dispersion relation for a weakly nonlinear ۲D lattice. Also a helical spring model based on the well-known Brinson model has been used to model the behavior of the auxiliary SMA springs. The results of the current study can be an initial step in designing active planar lattices with tunable wave attenuation performance.

نویسندگان

Soroush Sepehri

PhD. student, School of Mechanical Engineering, University of Tehran, Tehran, Iran;

Mahmoud Mosavi Mashhadi

Professor, School of Mechanical Engineering, University of Tehran, Tehran, Iran;

Mir Masoud Seyyed Fakhrabadi

Assistant professor, School of Mechanical Engineering, University of Tehran, Tehran, Iran;