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نمایش تعداد 1-10 از 120

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    Modal Analysis of an Automotive Wheel 

    نوع: Conference Paper
    نویسنده : محمد حسین ابوالبشری; ابراهیم بربرستانی ثانی; Mohammad Hossein Abolbashari; ; محمد حسین ابوالبشری; ابراهیم بربرستانی ثانی; Mohammad Hossein Abolbashari
    سال: 2002
    خلاصه:

    The modal analysis of a vehicle wheel is studied in this work. The modal

    parameters are measured experimentally. The measured quantities include the

    natural frequencies of the system and mode shapes. Modal analysis is also...

    Operational Modal Analysis in the Presence of Several Powerful Harmonic Excitations, Rotating Machinery Application 

    نوع: Conference Paper
    نویسنده : Masjedian, Mohammad Hassan; Keshmiri, Mehdi
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    Frequency optimization of laminated composite plates 

    نوع: Conference Paper
    نویسنده : سیدمحمدصالح وزیری کنگ علیا; فرزاد شهابیان مقدم; مهدی بندگی; saleh vaziri; Farzad Shahabian Moghadam; MAHDI BANDEGI
    سال: 2013
    خلاصه:

    is presented to maximize fundamental frequency of laminated composite plates

    under any combination of the three classical edge conditions. The first natural frequencies of laminated

    composite plates were obtained from modal analysis of plates...

    Finite element modeling of a wind turbine blade 

    نوع: Journal Paper
    نویسنده : محمد شیبانی; علی اکبر اکبری; Mohammad Sheibani; Ali Akbar Akbari
    سال: 2015
    خلاصه:

    Wind energy is a sustainable source of power that has a much lower environmental impact than conventional energy sources. One of the important stages in developing the modern wind turbines is studying the dynamic behavior ...

    Dam-reservoir-foundation interaction effects on the modal characteristic of concrete gravity dams 

    نوع: Journal Paper
    نویسنده : هاشم شریعتمدار; Adel Mirhaj; Hashem Shariatmadar
    سال: 2011
    خلاصه:

    . The analytical results obtained from numerical studies and modal analysis show that the accurate modeling of dam-reservoir-foundation and their interaction considerably affects the modal periods, mode shapes and modal hydrodynamic pressure...

    Horn design for ultrasonic vibration-aided equal channel angular pressing 

    نوع: Journal Paper
    نویسنده : رضا ناصری; Reza Naseri; K. Koohkan; M. Ebrahimi; F. Djavanroodi; H. Ahmadian
    سال: 2017
    خلاصه:

    designed and manufactured to promote maximum punch force reduction. The resonance frequency of the system which includes the horn with an initial length of 220 mm was obtained by simulated modal analysis. Experimental work using Audio-Technica microphone...

    Investigating the Effects of SVC Control Parameters on the NonlinearTorsional Interaction Using Modal Series Method 

    نوع: Conference Paper
    نویسنده : روح الامین زینلی داورانی; رضا قاضی; ناصر پریز; roholamin zeinali; Reza Ghazi; Naser Pariz
    سال: 2011
    خلاصه:

    In this paper, the nonlinear modal analysis

    based on modal series method is employed to

    study the effects of SVC control system

    parameters on the nonlinear interaction

    between Static VAr Compensator (SVC) and...

    Direct Adaptive Neurocontrol of Structures under Earth Vibration 

    نوع: Journal Paper
    نویسنده : محمد رضائی پژند; محمدرضا اکبرزاده توتونچی; علی نیکدل; Mohaamad Rezaiee Pajand; Mohammad Reza Akbarzadeh Totonchi; ALI Nikdel
    سال: 2009
    خلاصه:

    A direct adaptive neurocontroller is proposed to reduce structure response to earth vibrations by actively creating an equal but opposite force to that of the first mode force of the structure. While earthquake forces are ...

    OPERATIONAL MODAL ANALYSIS TECHNIQUES AND THEIR THEORETICAL AND PRACTICAL ASPECTS :A COMPREHENSIVE REVIEW AND INTRODUCTION 

    نوع: Conference Paper
    نویسنده : مرتضی قالیشویان; احمد شوشتری; Morteza Ghalishooyan; Ahmad Shooshtari
    سال: 2015
    خلاصه:

    There is an increasing popularity of operational modal analysis (OMA) techniques in many fields of study. In spite of the extensive researches about OMA, There is a need for more detailed and illustrative overview of OMA in different aspects due...

    Output-only modal parameter estimation of structures by Enhanced Frequency Domain Decomposition method 

    نوع: Conference Paper
    نویسنده : مرتضی قالیشویان; احمد شوشتری; Morteza Ghalishooyan; Ahmad Shooshtari
    سال: 2017
    خلاصه:

    In recent years output-only modal identification or operational modal analysis (OMA) has gained great attention of engineers. In the context of OMA, there is no need to measure the input and the modal parameters of dynamic systems are estimated just...

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