A SMA-based Wave Propagation Control Method for ۲D Nonlinear Phononic Lattices
محل انتشار: سی و یکمین همایش سالانه بین المللی مهندسی مکانیک ایران و نهمین همایش صنعت نیروگاهی ایران
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.
کلیدواژه ها:
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;