Free vibrational analysis of rectangular ducts with different joint conditions

• Autorzy: Jade N. , Venkatesham B.

Identyfikatory

DOI

10.15632/jtam-pl.56.4.1069

• Języki publikacji: EN

Abstrakty

EN

Rectangular ducts are fabricated using thin sheets of a metal with different joint conditions. Due to the presence of these joints, ducts deviate from their assumptive ideal shapes. The objective of the present work is to study the effect of different joint conditions and wall thickness on dynamic characteristics of the ducts. Experimental Modal Analysis (EMA) is performed on three rectangular ducts of different joint types. Numerical Modal Analysis (NMA) is also performed by considering that the ducts are of ideal rectangular shape (without joint condition). Correlation analysis is performed between EMA and NMA in terms of Modal Assurance Criteria (MAC), Relative Frequency Difference (RFD) plots and auto-MAC. It is observed that natural frequencies are in good agreement but there is a discrepancy in mode shapes.

Słowa kluczowe

EN

rectangular duct; duct joint; experimental modal analysis; modal assurance criteria

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2018
• Tom: Vol. 56 nr 4
• Strony: 1069--1081
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Jade N.

• Indian Institute of Technology Hyderabad, Department of Mechanical and Aerospace Engineering, Telangana, India

autor

Venkatesham B.

• Indian Institute of Technology Hyderabad, Department of Mechanical and Aerospace Engineering, Telangana, India

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).