کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5022751 1469955 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Global dynamics of imperfect axially forced microbeams
ترجمه فارسی عنوان
دینامیک جهانی از میکروب ها اجباری ناقص است
کلمات کلیدی
میکروبام وابسته به اندازه، دینامیک جهانی، نیروی محوری، تئوری تنش زنانه اصلاح شده،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
This paper, for the first time, analyses the size-dependent global dynamics of imperfect axially forced microbeams and shows that how a small initial imperfection (due to improper manufacturing of microbeams) can substantially change the size-dependent global dynamical behaviour of the microsystem; moreover, it investigates the effect of small size of the microbeam on the appearance and vanishing of different chaotic and quasiperiodic motions. More specifically, the continuous expressions for the size-dependent potential energy as well as kinetic energy of the microsystem are constructed and dynamically balanced via an energy method. A transformation to a reduced-order model is performed via a weighted-residual method. The bifurcation diagrams of Poincaré maps are constructed by means of direct time-integrating the reduced-order model for the imperfect microsystem. Poincaré sections, phase-plane diagrams, time histories, and fast Fourier transforms are also plotted for some cases in order to shed light on the microsystem size-dependent global dynamics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Engineering Science - Volume 115, June 2017, Pages 102-116
نویسندگان
, ,