Design and Fabrication of a Road Roller with Double
To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed Design and Fabrication of a Road Roller with Double-Frequency
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Curve of the frequency domain of the TRV roller. a Curve of the
To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was Corpus ID: 184852951; Industrial experiment on double-frequency composed vibratory roller @inproceedings{2013IndustrialEO, title={Industrial experiment on double Industrial experiment on double-frequency composed vibratory
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(PDF) Mathematical Model for the Manual Vibration
Abstract Dynamic loads calculation method in the manual vibration roller drive electric and mechanical systems is proposed. The Download Citation Industrial experiment on double-frequency composed vibratory roller In order to obtain industrial application of double-frequency composed Industrial experiment on double-frequency composed vibratory
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Dynamical response to vibration roller compaction and its
In Table 1, the static load on front drum can be divided into two parts: drum mass and frame mass (7500 kg and 5500 kg respectively, being calculated according to The double roller type glass rolling machine is an example of the paper. By the example, it is analyzed the inverter, asynchronous motor, a planetary gear reducer composed of Linear Speed Synchronization System Design of Double Roller
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Machines Free Full-Text A Coupling Model of High
The bearing characteristic frequency and its double-frequency can be found in the figure, but perhaps because the size of the roller fault processing is not large enough, the FCFR is not obvious. The In this study, a double roller-based TENG (DR-TENG) is introduced to increase the degree of tribo-charge accumulation on the contact electrode surface while occupying the same volume. Double Micromachines Free Full-Text 3D Printed Double Roller
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Micromachines Free Full-Text 3D Printed Double
In this study, a double roller-based TENG (DR-TENG) separately focusing on the small roller and large roller. The frequency of the water wave input was randomly applied with a range between 1.0 To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was put forward and adopted.Curve of the frequency domain of the DFV roller. a Curve of the
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Design and Fabrication of a Road Roller with Double-Frequency
To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was put forward and adopted. According to the design function, the eccentric shaft parts of the steel wheel were designed and manufactured to match the vibration system and driving Dynamic analysis for a bearing-rotor system with the imbalance and the asymmetric gap is conducted in this paper. A new improved analytical model overall considering the gap, the varying compliance vibration and the time-dependent unbalanced force is established, especially the new model is more accurate and closer to reality by Dynamic analysis of rolling ball bearing-rotor based on a new
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I. Double-frequency orbits and loops Oxford Academic
In the left-hand panel of Fig. 6 one can see that positions of a particle on a double-frequency orbit, written at every alignment of the bars, populate a closed curve, which is a loop. Therefore, one may expect that the relation between double-frequency orbits and loops found in the linear approximation also holds in the general case.To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was put forward and adopted.(PDF) Mathematical Model for the Manual Vibration Roller Drive
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Design and Fabrication of a Road Roller with Double-Frequency
To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was put forward and adopted. According to the design function, the eccentric shaft parts of the steel wheel were designed and manufactured to match the vibration system and driving The shaft mounted on double row spherical roller bearings (SKF 30208 J/Q) connected to a variable frequency drive (VFD) motor as shown in Fig. 1. The sampling rate is 50 kHz. The test rig operates at a rotational frequency at 25 Hz (i.e., rotational speed n = 1500 rpm) using digital tachometer.Fault size diagnosis of rolling element bearing using artificial
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Mathematics Free Full-Text Resonance Analysis of Horizontal
In this paper, the fractional order differential terms are introduced into a horizontal nonlinear dynamics model of a cold mill roller system. The resonance characteristics of the roller system under high-frequency and low-frequency excitation signals are investigated. Firstly, the dynamical equation of the roller system with a DOI: 10.1016/j.ymssp.2020.107555 Corpus ID: 232532527; Double and triple-frequency synchronization and their stable states of the two co-rotating exciters in a vibrating mechanical systemDouble and triple-frequency synchronization and their stable
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Dynamic Analysis of Rolling Bearings with Roller Spalling Defects Based
Analysis of dynamic characteristics of the defective bearing is significant for the fault diagnosis of the machinery. At present, there are few researches on numerical modeling of bearing with defective roller. To solve this problem, explicit finite element method is adopted in this paper to establish a nonlinear dynamic model of the cylindrical The paper reports the effect of cage and roller slip on the measured defect frequency response of rolling-element bearings using high-frequency resonance technique (HFRT) as a survelliance module. The differences in theoretically calculated and experimentally determined defect frequencies have been used to identify percentage cage slip and The Effect of Cage and Roller Slip on the Measured Defect Frequency
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Ride comfort evaluation for a double-drum vibratory roller with
of cab shaking under low frequency excitation and then the design parameters of ACMs were optimized by the finite element method [3, 5]. An auxiliary damping mount (ADM) of a vibratory roller was proposed to control the cab shaking based on a half-vehicle dynamics model [4]. The design parameters of rubber cab mount system of a single-drumDue to their lack of pollution and long replacement cycles, piezoelectric energy harvesters have gained increasing attention as emerging power generation devices. However, achieving effective energy harvesting in ultra-low-frequency (<1 Hz) rotational environments remains a challenge. Therefore, a novel rotational energy harvester (REH) Investigation of a Novel Ultra-Low-Frequency Rotational Energy
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Switchable single-double frequency multi-wavelength Brillouin Raman
Based on the findings, the MBW for single- and double-spacing BSLs were 39.72 nm from 1533.02 nm to 1572.74 nm and 37.03 nm from 1534.96 nm to 1571.99 nm, respectively. Download : Download high-res image (472KB)In this study, for energy compensation in the whole-angle control of Hemispherical Resonator Gyro (HRG), the dynamical equation of the resonator, which is excited by parametric excitation of the discrete electrode, is established, the stability conditions are analyzed, and the method of the double-frequency parametric The Energy Compensation of the HRG Based on the Double-Frequency
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Machines Free Full-Text A Coupling Model of High-Speed Train
The bearing characteristic frequency and its double-frequency can be found in the figure, but perhaps because the size of the roller fault processing is not large enough, the FCFR is not obvious. The comparison between the experimental results and the simulation results is listed in Table 3,and the errors are within a reasonable range, To solve the problems of difficult fault signal recognition and poor diagnosis effect of different damage in the same position in rolling mill bearing at low speed, a fault diagnosis method of rolling mill bearing based on integration of EEMD and DBN was proposed. The vibration signals in horizontal, axial, and vertical directions were A Fault Diagnosis Method of Rolling Mill Bearing at Low Frequency
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Dynamic modeling and vibration analysis of a flexible
Based on FGDS model, the vibration acceleration of bearing 1 at four working speeds was simulated by Matlab, The roller passing frequency of the outer raceway harmonics 3f o1 and the roller passing frequency of the inner raceway harmonics 3f i1 can be also found in bearing #1 and bearing #2.To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was put forward and adopted.Study on Double-Frequency Composed Vibrating Compaction Method Based
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