Results 11 to 20 of about 33,099 (267)

Shear modulus and damping ratio of a nonplastic silt at large shear strains [PDF]

open access: yesE3S Web of Conferences, 2019
Site response analyses and solution of dynamic soil-structure interaction problems need determination of variation of shear modulus and damping ratio with shear strain.
Sezer Alper   +2 more
doaj   +1 more source

Decomposition of process damping ratios and verification of process damping model for chatter vibration [PDF]

open access: yesMeasurement, 2012
In the previous study, by the same authors, titled ‘‘A new process damping model (PDM) for chatter vibration (Measurement, 44 (8) (2011) 1342–1348)’’, a new approach has been presented for obtaining process damping ratios (PDRs). This PDM has been constituted on the basis of the shear angle ðuÞ oscillations of the cutting tool and the alteration of the
Türkeş, Erol   +3 more
openaire   +4 more sources

Experimental Study of Awash Soil under Static and Cyclic Shear Loading

open access: yesAdvances in Civil Engineering, 2023
The dynamic soil properties (shear modulus and damping ratio) are of great importance for the analysis and design of geotechnical structures subjected to dynamic loads such as earthquake. Cyclic simple shear tests were conducted to study the variation of
Tigistu Abu Arficho, Argaw Asha Ashango
doaj   +1 more source

Modal damping ratio of symmetric laminate composite under the effect of attached mass using experimental design [PDF]

open access: yesFME Transactions, 2021
Nowadays, the use of composite materials has taken a large place in civilian industries as well as in military and aerospace industries. Therefore, significant investigations about their mechanical and physical properties are needed.
Abdelhafid Rahmane
doaj   +1 more source

Experimental and computational evaluation of modal identification techniques for structural damping estimation [PDF]

open access: yesE3S Web of Conferences, 2022
The damping ratio is a key indicator of a structures susceptability to human discomfort due to dynamic loads. Computational models, wind tunnel studies and empirical data can provide estimates of the damping ratio of a structure.
Moore Hollie   +2 more
doaj   +1 more source

Experimental study on influences of fines content and consolidation stress on shear modulus and damping ratio of saturated sand

open access: yesYantu gongcheng xuebao, 2017
The dynamic shear modulus and damping ratio are the two main parameters for describing the dynamic characteristics of soil. The tests on the saturated sand under isotropically consolidation by TSH-100 resonant column apparatus made by GCTS Instruments ...
BI Sheng , CHEN Guo-xing , ZHOU Zheng-long , WU Qi
doaj   +1 more source

Research on Damping Characteristics of Interconnected Hydropneumatic Suspension considering the Effects of Hose and Check Valve

open access: yesShock and Vibration, 2021
The interconnected hydropneumatic suspension (ICHPS) has not only the nonlinear stiffness and damping of the independent hydropneumatic suspension (IDHPS) but also antiroll and antipitch functions.
Hongmin Zhang, Xin Fang
doaj   +1 more source

Study on Optimal Design of Grotto-Eave System with Cable Inerter Viscous Damper for Vibration Control

open access: yesBuildings, 2022
In this paper, the mechanical model of grotto–eave system with cable inerter viscous damper (CIVD) is established, and the vibration control equations are established. Firstly, the stochastic response is carried out, and the optimization design of design
Jizhong Huang   +4 more
doaj   +1 more source

Enhancing stability control of Phase-Locked loop in weak power grids

open access: yesInternational Journal of Electrical Power & Energy Systems
This paper analyzes the factors affecting the stability of phase-locked loops (PLLs) in weak power grids. By establishing a PLL model in weak power grids, it is found that line impedance, grid frequency disturbances, and output power all have an impact ...
Andong Liu, Hongbo Cao, Jun Liu
doaj   +1 more source

Experimental Study on Long-term Dynamic and Mechanical Properties of Negative Temperature Fill Along Qinghai—Tibet Railway

open access: yes工程科学与技术, 2023
In order to evaluate the stability of roadbed in frozen soil area, the dynamic shear modulus and damping ratio of fill along Qinghai—Tibet railway are analyzed by means of laboratory test and theoretical analysis.
Liang DONG   +4 more
doaj  

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