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Research Article | 27-December-2017

ANALYSIS OF DIESEL AND RAPESEED METHYL ESTER PROPERTIES IN CEUP FUEL PIPELINE USING FREQUENCY DEPENDENT DAMPING MODEL

During a fuel injection cycle pressure inside Combination Electronic Unit Pump (CEUP) fuel injection system varies from low (~50 bars) to very high (~1500 bars) in fractions of seconds depending on the operating conditions. Physical properties of fuel including density, acoustic wave speed and bulk modulus also vary as a function of rapidly varying fuel pressure. A detailed analysis of these key fuel properties with our improved frequency dependent model with viscous damping developed in MATLAB

Qaisar Hayat, Fan Liyun, Song Enzhe, Xiuzhen Ma, Tian Bingqi, Naeim Farouk

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 2, 498–518

Article | 05-September-2020

EFFECT OF FAIL-SAFE MODE ON THE DAMPING CHARACTERISTICS OF A BYPASS-CONTROLLED SHOCK ABSORBER

Łukasz KONIECZNY

Transport Problems, Volume 15 , ISSUE 3, 43–52

Article | 26-August-2018

SENIOR COHOUSING IN CROSS-CUTTING RESEARCH

In girders with corrugated web, semirigid joints alter damping and vibrational frequency, which indirectly produces a change in the integrated stiffness of girders K, thus diversifying the magnitude of displacement amplitudes of forced vibration [4, 5, 6]. On the basis of investigations relying on the method of vibration measurements, rotational stiffness of semirigid end-plate connections was determined [2, 3]. Using two viscoelastic material models, namely the Voigt–Kelvin and the Hook–Voigt

Witold BASIŃSKI

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 4, 21–31

Article | 27-August-2018

ANALYSIS OF OSCILLATORY MOTION OF SIN GIRDERS WITH SEMIRIGID JOINTS

In girders with corrugated web, semirigid joints alter damping and vibrational frequency, which indirectly produces a change in the integrated stiffness of girders K, thus diversifying the magnitude of displacement amplitudes of forced vibration [4, 5, 6]. On the basis of investigations relying on the method of vibration measurements, rotational stiffness of semirigid end-plate connections was determined [2, 3]. Using two viscoelastic material models, namely the Voigt–Kelvin and the Hook–Voigt

Witold BASIŃSKI

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 4, 55–65

Article | 05-June-2013

DEVELOPMENT OF A CARDAN MECHANISM FOR THE ASTEROID LANDER

It is of great significance for improving the landing stability and adjusting the attitude of equipment base by designing a cardan mechanism in the asteroid lander. In the paper, a cardan mechanism having cushion and attitude adjusting functions is designed for the asteroid lander. The cardan mechanism contains electromagnetic damping, belt transmission and cross-shaft, and it has merits of adjustable damping and bearing large overload. The attitude control system of the cardan mechanism is

Zhijun Zhao, Jingdong Zhao, Hong Liu, Zhi Zhang

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 3, 1283–1297

Article | 01-March-2016

ON MASS SENSING USING MICRO/NANO RESONATORS - APPROACHES, CHALLENGES AND DIRECTIONS

Bhaskar Choubey, Alistair McEwan

International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 1, 1–20

Article | 27-August-2018

VIBRATION PROPAGATION IN SUBSOIL: IN-SITU TESTING AND NUMERICAL ANALYSES

element method. The most important factor influencing the propagation of impacts is the phenomenon of damping of the propagating wave in the soil. The mechanism of damping proposed by Rayleigh was used in the analysis, which, when selecting the appropriate parameters of the model, is able to realistically simulate the observed phenomena. The soil, in which the propagation of impulses occurred, was described with the use of linear-elastic model. Modulus of deformation correspond to the values of small

Stefan PRADELOK, Marian ŁUPIEŻOWIEC

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 1, 79–86

Research Article | 04-December-2011

FPGA BASED VIBRATION CONTROL OF A MASS VARYING TWO-DEGREE OF FREEDOM SYSTEM

spectrum vibration control. LabVIEW with real time suite was used for algorithm implementation and device control. To avoid sloshing in tanks at different water height a floating roof was used. Its effect on damping was also studied.

Mayand Pratap Singh, Prashant Kumar Tripathi, K.V Gangadharan

International Journal on Smart Sensing and Intelligent Systems, Volume 4 , ISSUE 4, 698–709

Article | 05-September-2013

THE VIBRATION AND MEASUREMENT OF DRIVING MODE OF THE TWO-STAGE DECOUPLED MICRO-MACHINED GYROSCOPE

damping coefficient in time domain and frequency domain respectively using this method. The comparison to the theoretical solution proves that the method is effective and accurate; it will help the study for the micro-machined gyroscope vibration and provides a new way to measure MEMS.

Yao Fenglin, Gao Shiqiao, Zhao Jie, Liu Haipeng, Niu Shaohua, Jin Lei

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 4, 1599–1616

Article | 05-September-2020

THREE- AND FOUR-MASS MODELS FOR VEHICLE FRONT CRUMPLE ZONE

The article deals with the applicability of the three- and four-mass crumple zone models by optimization of the vehicle front crumple zone in case of a collision. The possibilities for integrating the requirements for individual crumple zones are discussed. The crumple model for special crumple zone elements has been proposed. Optimum parameter limits for the deformable elements have been identified, and complex influence of the damping elements used has been demonstrated. The need for

Vaidas LUKOŠEVIČIUS, Robertas KERŠYS, Artūras KERŠYS, Rolandas MAKARAS, Janina JABLONSKYT

Transport Problems, Volume 15 , ISSUE 3, 79–92

Article | 10-April-2018

A New High-Precision Mode Acceleration Method for Calculating Frequency Response of Non-Classically Damped Systems

The modal truncation problem of non-classically damped systems is constantly encountered in the dynamic analysis of engineering. The present study is designed to calculate the frequency response functions of the non-classically damping systems accurately on account of the Neumann expansion theory and the frequency shifting technique. Considering the first and the second term influence of the Neumann expansion equations in the frequency response analysis of the viscoelastic systems, we could

Jingfang Shen, Peng Wang

International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 4, 152–156

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