NONLINEAR STRUCTURAL BEHAVIOR AND VIBRATION CONTROL OF A DOUBLE CURVED CABLE NET UNDER THE DYNAMIC EXCITATIONS

MOHAMMAD KHALKHALIHA; PANAM ZARFAM; RAHAM ZARFAM

doi:10.1590/1679-78255884

NONLINEAR STRUCTURAL BEHAVIOR AND VIBRATION CONTROL OF A DOUBLE CURVED CABLE NET UNDER THE DYNAMIC EXCITATIONS

Authors

MOHAMMAD KHALKHALIHA DEPARTMENT OF CIVIL ENGINEERING, SCIENCE AND RESEARCH BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN HTTPS://ORCID.ORG/0000-0003-2220-2124
PANAM ZARFAM DEPARTMENT OF CIVIL ENGINEERING, SCIENCE AND RESEARCH BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN. HTTPS://ORCID.ORG/0000-0002-7951-0630
RAHAM ZARFAM LEONHARDT, ANDRÄ UND PARTNER, STUTTGART, GERMANY HTTPS://ORCID.ORG/0000-0003-3988-0204

DOI:

https://doi.org/10.1590/1679-78255884

Abstract

THE PAPER IS REGARDING TO THE STRUCTURAL DYNAMICS OF A SADDLE SHAPED CABLE-NET STRUCTURE WITH TWO HIGH POINTS AND TWO LOW POINTS AT THE CORNERS. THE NET CABLES ARE PRE-STRESSED BY STRETCHING THE FOUR EDGE CABLES THAT ARE SUPPORTED AT THE CORNER POINTS. A SERIES OF PARAMETRIC NONLINEAR DYNAMIC ANALYSIS IS UTILIZED TO EVALUATE THE DYNAMIC RESPONSE OF THE SYSTEM UNDER THE DIFFERENT STRUCTURAL MASSES AND GEOMETRIES, PRETENSIONS AND ALIGNMENTS OF CABLES AND THE AMPLITUDES OF DYNAMIC EXCITATION. AN EQUIVALENT SINGLE-DEGREE-OF-FREEDOM MODEL IS PRESENTED AS A SIMPLIFIED METHOD TO ESTIMATE THE DYNAMIC RESPONSE OF THE FULL FINITE ELEMENT MODEL. FURTHERMORE, A NONLINEAR ACTIVE CONTROL ALGORITHM IS APPLIED TO DECREASE THE STRUCTURAL RESPONSE UNDER THE TRANSIENT WIND EXCITATION AND THE RESULTS INDICATE THE EFFECTIVENESS OF THE PROPOSED CONTROL ALGORITHM.

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Published

2020-04-03

Issue

Vol. 17 No. 3 (2020)

Section

Articles

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