کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4976910 1451837 2018 20 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Circularly-symmetric complex normal ratio distribution for scalar transmissibility functions. Part III: Application to statistical modal analysis
ترجمه فارسی عنوان
توزیع نرمال نسبت پیچیدگی متقارن متقارن برای توابع انتقال اسکالر. قسمت سوم: کاربرد در تجزیه و تحلیل آماری مودال
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت
کلمات کلیدی
قابل انتقال، مدل احتمالی تجزیه و تحلیل مودال، جزء هارمونیک، عدم قطعیت اندازه گیری،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی


- Probabilistic model for transmissibility function in the vicinity of resonant frequency is formulated in modal domain.
- The statistical characteristics of transmissibility function in modal domain are investigated in detail.
- The process of transmissibility-based modal identification is posed in the context of Bayesian framework.
- 'Noise-to-environment' ratio is identified directly as a separate parameter.
- The possibility of distinguishing harmonic components and structural ones using uncertainty information is explored.

This study applies the theoretical findings of circularly-symmetric complex normal ratio distribution Yan and Ren (2016) [1,2] to transmissibility-based modal analysis from a statistical viewpoint. A probabilistic model of transmissibility function in the vicinity of the resonant frequency is formulated in modal domain, while some insightful comments are offered. It theoretically reveals that the statistics of transmissibility function around the resonant frequency is solely dependent on 'noise-to-signal' ratio and mode shapes. As a sequel to the development of the probabilistic model of transmissibility function in modal domain, this study poses the process of modal identification in the context of Bayesian framework by borrowing a novel paradigm. Implementation issues unique to the proposed approach are resolved by Lagrange multiplier approach. Also, this study explores the possibility of applying Bayesian analysis in distinguishing harmonic components and structural ones. The approaches are verified through simulated data and experimentally testing data. The uncertainty behavior due to variation of different factors is also discussed in detail.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 98, 1 January 2018, Pages 1000-1019
نویسندگان
, ,
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت