شماره ركورد كنفرانس
5215
عنوان مقاله
A SMA-based Wave Propagation Control Method for 2D Nonlinear Phononic Lattices
پديدآورندگان
Sepehri Soroush soroush.sepehri@ut.ac.ir PhD. student, School of Mechanical Engineering, University of Tehran, Tehran, Iran , Mosavi Mashhadi Mahmoud mmosavi@ut.ac.ir Professor, School of Mechanical Engineering, University of Tehran, Tehran, Iran , Fakhrabadi Mir Masoud Seyyed mfakhrabadi@ut.ac.ir Assistant professor, School of Mechanical Engineering, University of Tehran, Tehran, Iran
تعداد صفحه
5
كليدواژه
.phononic crystal , wave propagation , shape memory alloys , perturbation methods
سال انتشار
1402
عنوان كنفرانس
سي و يكمين همايش بين المللي مهندسي مكانيك ايران و نهمين همايش صنعت نيروگاهي ايران
زبان مدرك
انگليسي
چكيده فارسي
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 2D lattices. The Lindstedt-Poincare method is utilized in conjunction with the Bloch’s theorem to obtain the analytical dispersion relation for a weakly nonlinear 2D lattice. Also a helical spring model based on the wellknown 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.
كشور
ايران
لينک به اين مدرک