Studies in modal density – its effect at low frequencies [PDF]
, 2009 The ability to objectively measure the reproduction quality of a small room at low frequencies has long been desired. Over many years, there have been attempts to produce recommendations, metrics, and criteria by which to define a particular room.
Wankling, Matthew, Fazenda, Bruno
core +3 more sources
NUMERICAL AND EXPERIMENTAL CONSIDERATION OF FREQUENCY DOMAIN DECOMPOSITION METHOD FOR MODAL PARAMETERS IDENTIFICATION OF STRUCTURE [PDF]
مجله مدل سازی در مهندسی, 2010 Classical modal testing of large structures such as bridges, towers and building is encountered with some problems such as exciting the structure and noisy environment.
محمد مهدی Khatibi +2 more
doaj +1 more source
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
Frontiers in Built Environment, 2020 Operational modal analysis (OMA), also known as output-only or ambient vibration test (AVT), has become in last decades a powerful approach for a wide range of applications in the field of civil engineering.
G. Lacanna +3 more
doaj +1 more source
Modeling uncertainty of flexible structures with unknown high-order modal parameters - a geometric characterization of frequency responses [PDF]
, 2002 A control-oriented uncertainty modeling on frequency domain is presented for a class of spectral systems with unknown high-order modal parameters.
Imai, Jun
core +1 more source
Modal parameter identification based on NEXT/ERA time-domain joint algorithm
上海师范大学学报. 自然科学版, 2015 This paper summarizes the basic idea of NEXT algorithm and features of the system, and the basic steps of implementation.On this basis,a modal identification program is written using Matlab.The monitoring data of East China Sea bridge are selected as an ...
WANG Hongwei
doaj +1 more source
Identification Method of Modal Parameters of Machine Tools Under Periodic Cutting Excitation
IEEE Access, 2020 The dynamics of a machine tool have an important influence on the quality and efficiency of the machining process. In this paper, the modal parameters identification method of machine tools under normal cutting excitation is proposed based on the fact ...
Ling Yin +7 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
Characterizing the Dynamic Response of a Chassis Frame in a Heavy-Duty Dump Vehicle based on an Improved Stochastic System Identification [PDF]
, 2015 This paper presents an online method for the assessment of the dynamic performance of the chassis frame in a heavy-duty dump truck based on a novel stochastic subspace identification (SSI) method. It introduces the use of an average correlation signal as
Chen, Zhi +3 more
core +4 more sources
Finite Element Model Updating of Axisymmetric Structures
Applied SciencesCreating the most accurate numerical models with the same dynamic behavior as real structures plays an important role in the development process of various facilities.
Pavol Lengvarský +3 more
doaj +1 more source