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long-span suspension bridge flutter analysis with drag force effects
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نویسنده
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piana gianfranco ,carpinteri alberto
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منبع
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journal of applied and computational mechanics - 2021 - دوره : 7 - شماره : Special Is - صفحه:1077 -1089
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چکیده
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The paper investigates the influence of the drag force onto the flutter velocity and frequency of the akashi kaikyo bridge. finite element analyses were run in ansys by combining unsteady lift and moment actions with: (a) unsteady drag, (b) steady drag, (c) no drag. the finite element results are compared to those obtained by an inhouse matlab code based on a semianalytic continuum model and with others from the literature. the continuum model includes flexuraltorsional secondorder effects induced by steady drag force into the bridge’s equations of motion, in addition to unsteady lift and moment actions. the results show that good predictions of the flutter velocity can be obtained by combining steady drag with unsteady lift and moment.
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کلیدواژه
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aeroelastic flutter ,suspension bridge ,akashi kaikyo bridge ,finite element model ,semi-analytic model ,drag force
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آدرس
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politecnico di torino, department of structural, geotechnical and building engineering, italy. tongji university, department of bridge engineering, china, politecnico di torino, department of structural, geotechnical and building engineering, italy. shantou university, department of civil and environmental engineering, china
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پست الکترونیکی
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alberto.carpinteri@polito.it
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Authors
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