Results 21 to 30 of about 3,270,162 (286)
Significance of low energy impact damage on modal parameters of composite beams by design of experiments [PDF]
, 2009 This paper presents an experimental study on the effects of multi-site damage on the vibration response of composite beams damaged by low energy impacts around the barely visible impact damage limit (BVID).
A Shahdin +6 more
core +1 more source
An earthquake response spectrum method for linear light secondary substructures [PDF]
, 2007 YesEarthquake response spectrum is the most popular tool in the seismic analysis and design of structures. In the case of combined primary-secondary (P-S) systems, the response of the supporting P substructure is generally evaluated without considering ...
Palmeri, Alessandro, Muscolino, G.
core +4 more sources
Correlating low energy impact damage with changes in modal parameters: a preliminary study on composite beams [PDF]
, 2009 This paper is an experimental study of the effects of multi-site damage on the vibration response of a composite beam damaged by low energy impact. The variation of the modal parameters with different levels of impact energy and density of impact is ...
Morlier, Joseph +2 more
core +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
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
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
Monitoring the effects of impact damages on modal parameters in carbon fiber entangled sandwich beams [PDF]
, 2009 The aim is to study the impact toughness of two types of entangled sandwich materials (heavy and light) with the help of vibration testing. A simple case of symmetrical impacts is studied in this article as no literature is available regarding impact ...
Bouvet, Christophe +4 more
core +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
doaj +1 more source
Damping System Designs using Nonlinear Frequency Analysis Approach [PDF]
, 2012 The main purpose of this thesis focuses on the investigation of the frequency domain analysis and design approaches for nonlinear damping systems. With the development of modern mechanical and civil engineering structures, the vibration control has ...
Guo, Pengfei
core +6 more sources
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