DESIGN AND DAMPING ANALYSIS OF A NEW EDDY CURRENT DAMPER FOR AEROSPACE APPLICATIONS

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QIANG PAN
TIAN HE
DENGHONG XIAO
XIAODONG LIU

Abstract

IN ORDER TO REDUCE THE STRUCTURAL VIBRATIONS OF A MECHANICAL SYSTEM USED IN AEROSPACE, A NEW SKETCH OF EDDY CURRENT DAMPER (ECD), CONSISTING OF ONE CYLINDRICAL PERMANENT MAGNET, TWO RING-SHAPE COPPER PLATES, ONE AXIAL TRANSMISSION SHAFT AND ELECTROMAGNETIC SHIELD, IS PROPOSED. THREE DIMENSIONAL (3D) ELECTROMAGNETIC TRANSI-ENT ANALYSIS ON DAMPING PERFORMANCE OF THE PROPOSED DAMPER IS CONDUCTED BY ANSYS TO DETERMINE THE DIMENSIONS OF THE DESIGNED DAMPER. AND A SERIES OF DAMPING TESTS FOR THE DAMPER SUBJECTED TO SINUSOID EXCITATIONS WITH AMPLITUDES OF AROUND 0.1 AND 1 MM ARE RESPECTIVELY CARRIED OUT UNDER FREQUENCIES RANGING FROM 1 TO 50 HZ. THE EXPERIMENTAL RESULTS VALIDATE THAT THE 3D TRANSIENT ANALYSIS METHOD WITH ANSYS IS EFFECTIVE TO GUIDE THE DESIGN OF ECDS. MOREO-VER, IT IS FOUND THAT THE PROPOSED ECD HAS HIGH DAMPING, WHICH IS SIGNIFICANTLY SUPERIOR TO THE ONE-PLATE ECD WITH THE SAME STRUCTURE AND DIMENSIONS.

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Author Biographies

QIANG PAN, BEIHANG UNIVERSITY

QIANG PAN GRADATED IN JET PROPULSION FROM BEIJING UNIVERSITY OF AERONAUTICS & ASTRONAUTICS, CHINA, IN 2001, AND COMPLETED HIS PHD DEGREES IN SOLID MECHANICS FROM INHA UNIVERSITY, SOUTH KOREA, IN 2009. PRESENTLY HE IS A LECTURER IN SCHOOL OF TRANSPORTATION SCIENCE AND ENGINEERING, BEIHANG UNIVERSITY. HIS RESEARCH INTERESTS INCLUDE VIBRATION CONTROL, AIRCRAFT AIRWORTHINESS AND APPLICATION OF SMART MATERIALS.

TIAN HE, BEIHANG UNIVERSITY

TIAN HE RECEIVED HIS PH.D IN AEROSPACE PROPULSION THEORY AND ENGINEERING FROM BEIHANG UNIVERSITY, CHINA, IN 2008. HE IS AN ASSOCIATE  PROFESSOR AT THE SCHOOL OF TRANSPORTATION SCIENCE AND ENGINEERING, BEIHANG UNIVERSITY. HIS RESEARCH INTERESTS INCLUDE VIBRATION CONTROL, FAULT DIAGNOSIS, SIGNAL PROCESSING AND ACOUSTIC EMISSION.

DENGHONG XIAO, BEIHANG UNIVERSITY

DENGHONG XIAO RECEIVED HIS PH.D. DEGREE IN VEHICLE ENGINEERING FROM BEIHANG UNIVERSITY, BEIJING, CHINA, IN 2015. NOW HE WORKS AT BEIJING ELECTRO-MECHANICAL ENGINEERING INSTITUTE. HIS CURRENT RESEARCH INTERESTS INCLUDE NOISE AND VIBRATION CONTROL, STRUCTURE OPTIMIZATION, AND ACOUSTIC EMISSION

XIAODONG LIU, BEIHANG UNIVERSITY

XIANDONG LIU RECEIVED HIS B.S. DEGREE IN AUTOMOBILE ENGINEERING AND M.S. DEGREE IN COMPUTATIONAL MECHANICS FROM JILIN UNIVERSITY OF TECHNOLOGY (JINLIN UNIVERSITY, NOW), IN 1986 AND 1989, RESPECTIVELY, AND HIS PH.D IN AEROSPACE PROPULSION THEORY AND ENGINEERING FROM BEIHANG UNIVERSITY, CHINA, IN 1999. HE IS A PROFESSOR AT THE SCHOOL OF TRANSPORTATION SCIENCE AND ENGINEERING OF BEIHANG UNIVERSITY. HIS RESEARCH INTERESTS INCLUDE VEHICLE SYSTEM DYNAMICS, NOISE AND VIBRATION CONTROL, FAULT DIAGNOSIS, ACOUSTIC EMISSION AND VIBRATION SIGNAL PROCESSING.