Results 21 to 30 of about 4,853 (302)
Damage monitoring in sandwich beams by modal parameter shifts: a comparative study of burst random and sine dwell vibration testing [PDF]
, 2010 This paper presents an experimental study on the effects of multi-site damage on the vibration response of honeycomb sandwich beams, damaged by two different ways i.e., impact damage and core-only damage simulating damage due to bird or stone impact or ...
Morlier, Joseph +2 more
core +1 more source
Shock and Vibration, 2020 To reduce the vibration of the plate-like structure under different boundary conditions, an all-metal damping composite structure was proposed, and its damping layer was entangled metallic wire material (EMWM).
Fuhao Peng +4 more
doaj +1 more source
Model Updating for Systems with General Proportional Damping Using Complex FRFs
Shock and Vibration, 2020 In this paper, we propose a model updating method for systems with nonviscous proportional damping. In comparison to the traditional viscous damping model, the introduction of nonviscous damping will not only reduce the vibration of the system but also ...
Xinhai Wu +3 more
doaj +1 more source
IEEE Access, 2020 In order to machine complex box and shell structures, the cutter with large ratio of length to diameter is usually used, whereas the low rigidity of the cutter hinders the increase of the stable machining parameters.
Yan Xia +6 more
doaj +1 more source
Measurement + Control, 2021 In the wind tunnel test of a long-span bridge model, to ensure that the dynamic characteristics of the model can satisfy the test design requirements, it is particularly important to accurately identify the modal parameters of the model.
Yulin Zhou +5 more
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Mathematics, 2021 A combined energy method is proposed to investigate the flutter instability characteristics of weakly damped panels in the supersonic airflow. Based on the small damping assumption, the motion governing partial differential equation (PDE) of the panel ...
Xiaochen Wang +3 more
doaj +1 more source
Damping Identification of Bridges Under Nonstationary Ambient Vibration
Engineering, 2017 This research focuses on identifying the damping ratio of bridges using nonstationary ambient vibration data. The damping ratios of bridges in service have generally been identified using operational modal analysis (OMA) based on a stationary white noise
Sunjoong Kim, Ho-Kyung Kim
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Journal of Natural Fibers, 2022 Natural fiber composites (NFC) exhibit good specific mechanical properties in comparison to synthetic fiber composites (SFC). The study investigates interlaminar glass (G) fiber hybridized jute (J) and flax (F) reinforced epoxy composites designated as ...
Harshad Pingulkar +3 more
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Aeroelastic stability analysis of rotor blade with complex three-dimensional design
Xibei Gongye Daxue Xuebao, 2023 A rotor dynamic analysis method for the complex three-dimensional design blade was developed and applied to analyzing its aeroelastic stability. Based on the medium-size deformation beam theory and Hamilton principle, the joint transfer matrix was used ...
DENG Jinghui +3 more
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Modal identification of high earth-rock dams based on seismic records and SSI method
Yantu gongcheng xuebao, 2021 Using the measured seismic records to identify the modal parameters of high earth-rock dams is a feasible way to study the dynamic characteristics of dams.
WANG Mao-hua 1, 2, CHI Shi-chun 1, 2, ZHOU Xiong-xiong 3
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