Results 21 to 30 of about 106,634 (300)

Study of the effect of specimen size and frequency on the structural damping property of beam

Mechanical Engineering Journal, 2016
It is said that the parameters that characterize structural damping, i.e., the loss factor, are identical to the material of the specimen, but in actuality, the damping property is sometimes affected by specimen size or the frequency.
Shozo KAWAMURA, Masato KITA, Masami MATSUBARA, Tomohiko ISE   +3 more
doaj   +1 more source

Influence of Core Thickness and Boundary Condition on the Modal Characteristics of Composite Structure with Metallic Damping Core

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, Yiwan Wu, Hongbai Bai, Yichuan Shao, Zhiqiang Qin   +4 more
doaj   +1 more source

Determination of modal damping ratio for a hybrid floor system

Journal of Vibroengineering, 2015
Concerns about sustainability have led in recent years to develop new structural concepts of timber floor systems which allowed significant performance improvements for strength and stability, while reducing overall costs for a building.
D. Isopescu, C. Gavriloaia
semanticscholar   +1 more source

Effect of 3D Printing Process Parameters on Damping Characteristic of Cantilever Beams Fabricated Using Material Extrusion

Polymers, 2023
The present paper aims to investigate the process parameters and damping behaviour of the acrylonitrile butadiene styrene (ABS) cantilever beam manufactured using material extrusion (MEX).
Feiyang He, Haoran Ning, M. Khan
semanticscholar   +1 more source

Improvement of Milling Stable Processing Condition for a Cutter With Large Ratio of Length to Diameter

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, Yi Wan, Xichun Luo, Yanan Li, Jinglong Cao, Qinghua Song, Zhanqiang Liu   +6 more
doaj   +1 more source

Sensitivity Analysis of Modal Parameters of a Jacket Offshore Wind Turbine to Operational Conditions

Journal of Marine Science and Engineering, 2023
Accurate estimation of offshore wind turbine (OWT) modal parameters has a prominent effect on the design loads, lifetime prediction, and dynamic response of the system. Modal parameters can vary during the operation of OWTs.
Nasim Partovi-Mehr, E. Branlard, Mingming Song, B. Moaveni, E. Hines, A. Robertson   +5 more
semanticscholar   +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, Huan He, Yang Liu, Guoping Chen   +3 more
doaj   +1 more source

Free vibration and damping characteristics of carbon-fiber-reinforced sandwich cylindrical shells with 3D reentrant auxetic core

Mechanics of Advanced Materials and Structures, 2023
This article investigates the free vibration and damping characteristics of carbon fiber-reinforced sandwich cylindrical shells with 3D reentrant auxetic cores (3D RSCSs).
Yun-Long Chen, Li Ma
semanticscholar   +1 more source

Modal parameters identification of bridge by improved stochastic subspace identification method with Grubbs criterion

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, Xulei Jiang, Mingjin Zhang, Jinxiang Zhang, Hao Sun, Xin Li   +5 more
doaj   +1 more source

A Combined Energy Method for Flutter Instability Analysis of Weakly Damped Panels in Supersonic Airflow

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, Zhichun Yang, Guiwei Zhang, Xinwei Xu   +3 more
doaj   +1 more source