Damping Effects Induced by a Mass Moving along a Pendulum
المؤلفون المشاركون
Gandino, E.
Bellino, A.
Fasana, A.
Garibaldi, L.
Marchesiello, S.
المصدر
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-06-01
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
The experimental study of damping in a time-varying inertia pendulum is presented.
The system consists of a disk travelling along an oscillating pendulum: large swinging angles are reached, so that its equation of motion is not only time-varying but also nonlinear.
Signals are acquired from a rotary sensor, but some remarks are also proposed as regards signals measured by piezoelectric or capacitive accelerometers.
Time-varying inertia due to the relative motion of the mass is associated with the Coriolis-type effects appearing in the system, which can reduce and also amplify the oscillations.
The analytical model of the pendulum is introduced and an equivalent damping ratio is estimated by applying energy considerations.
An accurate model is obtained by updating the viscous damping coefficient in accordance with the experimental data.
The system is analysed through the application of a subspace-based technique devoted to the identification of linear time-varying systems: the so-called short-time stochastic subspace identification (ST-SSI).
This is a very simple method recently adopted for estimating the instantaneous frequencies of a system.
In this paper, the ST-SSI method is demonstrated to be capable of accurately estimating damping ratios, even in the challenging cases when damping may turn to negative due to the Coriolis-type effects, thus causing amplifications of the system response.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Gandino, E.& Marchesiello, S.& Bellino, A.& Fasana, A.& Garibaldi, L.. 2014. Damping Effects Induced by a Mass Moving along a Pendulum. Shock and Vibration،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1047892
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Gandino, E.…[et al.]. Damping Effects Induced by a Mass Moving along a Pendulum. Shock and Vibration No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1047892
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Gandino, E.& Marchesiello, S.& Bellino, A.& Fasana, A.& Garibaldi, L.. Damping Effects Induced by a Mass Moving along a Pendulum. Shock and Vibration. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1047892
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1047892
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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