قائمة الطعام
This article presents a detailed analysis of the electromagnetic force and vibration behavior of a new axial flux permanent magnet (AFPM) machine with a yokeless stator and interior PM rotor. Firstly, the configuration of an AFPM machine with a dual rotor and a sandwiched stator is introduced, including the structural design, fixation of the …
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Finally, based on the comprehensive review, some topics such as a concordant optimal method on screening operational parameters, the appropriate …
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The design strategies for powertrain mounting systems play an important role in the reduction of vehicular vibration and noise. As stiffness and damping elements connecting the transmission system and vehicle body, the rubber mount exhibits better vibration isolation performance than the rigid connection. This paper presents a …
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What vibration analysis offers. 1. Greater productivity. Vibration analysis technology gathers data on a screen box by measuring parameters such as g-force, stroke, rpm, orbit – and even lateral …
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The optimal mathematical model of linear vibrating screen is established by means of MATLAB optimization technology and the optimization method is proved to be consistent and reliable. This thesis aims at the maximal productivity per unit power for linear vibrating screen. By means of MATLAB optimization technology, the optimal …
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RANDOM VIBRATION AND OPTIMUM SCREENING TIME DETERMINATION 75 3.1 Introduction and Research Objectives 75 3.2 Failure Mechanisms Under Random Vibration 76 3.3 Fatigue Test, S-N Cxirve and Acceleration Factor 77 3.4 Palmgren and Miner's Linear Damage Accumulation Hypothesis 79 3.5 Distribution Determination for the …
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Screening performance and reliability of vibrating screen depend on three aspects. • Kinetic properties of screen body by dynamic modeling are summarized. • …
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element method (FEM) and the sound field analysis using the boundary element method (BEM) of LMS Virtual.Lab. Input data are fundamental performance parameters of the gear, which consist of the gear geometry, material, and gear ratio. Output data are vibration and noise analysis results, which consist of dynamic responses and sound …
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A wide variety of vibrating screens are operated in the raw material processing and aggregate industries. Vibrating screen is a common equipment in mining machinery and equipment, its vibration is mainly generated by the exciter to achieve, and the use of the exciter working conditions are harsh, and with strong vibration impact …
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Optimization of a Vibrating Screen's Mechanical Parameters. B ́ela Csizmadia, Attila Heged ̋us, and Istv ́an Keppler. Abstract. The efficiency of sizing, the energy consumption, …
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Due to linear vibrating screen's high efficiency, simple structure, multi-level advantages, it has been widely used in mines, coal, smelting, light industry, chemical industry, medicine, food, and other industries [].The forced vibration of the vibrating screen under a large load, long-term uninterrupted work is easy-to-occur fatigue damage, and …
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A detailed optimal parametric study is performed for a tuned liquid column damper (TLCD) in suppressing the pitching vibration of structures. Due to the difficulty of finding analytical solutions ...
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Vibrating screen is the most commonly used sieving machinery, how to improve its sieving performance is a major issue during the design and application.
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The purpose of this paper is to study the screen surface parameters of the double deck vibrating screen, in sections, to determine the influence of each part of the screen …
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With the traditional dynamic model for kinetic analysis process of a vibrating screen established, the external input excitation parameters (i.e., the excitation frequency and amplitude) screen and its physical properties (i.e., the screen size, the vibration mass and the vibration isolation system parameters) can be input into the dynamic ...
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Abstract. To avoid severe vibrations, different drillstem (or drillstring) vibration models have been used to predict and avoid resonance regions by selecting bottom hole assembly (BHA) components and operating parameters such as weight on bit (WOB) and RPM. The overall efficiency of the drilling operations can be evaluated using …
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To achieve optimal vibration isolation bandwidth and performance, it is crucial for a vibration isolation system to possess a low initial frequency and an ultra-low-frequency isolation range [1,2,3].While the demand for low-frequency and ultra-low-frequency micro-vibration isolation technology presents significant design challenges …
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Optimal oscillation parameters of vibrating screens are determined using analytical methods by investigating movement of a single spherical grain particle in the …
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6 Analysis of the vibration spectrum can be divided into 3 areas: Sub-synchronous is less than 1x turning speed (TS) of the shaft and can identify problems with: belts, oil whirl/whip, rubs, loose roller bearing in housing, cage or train frequency of antifriction
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Vibrating screens are widely used in the mining industry. Its operating condition has a direct impact on the entire mining processing system. 1,2 With the increase in the size and processing capacity of vibrating screens, the beam structure's flexibility and inertia force have increased, resulting in a need for improved dynamic and fatigue …
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The vibrating screen used in cement plant was used to screen the cement residues of particle size under 2 mm. The conventional vibrating screen mainly consists of a base, screen, screen frame, two vibrators and four helical springs. The screen mesh was fixed to the screen frame with fasteners as shown in Fig. 1. The angle of inclination of …
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Data Mining Can Help Achieve Optimum Machine Performance. By Carol Wasson. Most producers will agree that vibrating screens must be properly specified …
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Cao and Xu 5 based on ANSYS, the performance analysis of high frequency vibrating-dewatering screen is carried out, and the …
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The optimum screen efficiency of 97% is obtained at the screen angle of 9 o, vibration amplitude of 6.89 cm/s, a blain value of 3000 cm²/g, screen mesh size of 0.1 cm × 0.1 cm and feed rate of ...
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In reality, a large vibrating screen, which has a screen surface width of no less than 3.6 m and a screening area of no less than 20.0m 2, usually oscillates with extremely complex dynamic characteristics of the screen body [10, 11].As shown in Fig. 2 (b), generally, except for the dominated strong alternating load yielded by two box-type …
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3.1 Dynamic Analysis of Vibrating Screen The main parameters of the vibrating screen are: elastic modulus E = 2 . 068 × 10 5 MPa, Poisson's ratio υ = 0 . 3, density ρ = 7 . 8×10 3 kg / m 3, and axial stiffness
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This transformation leads to a spectrum, which plots individual vibration signals against frequency, revealing the health and performance of the machinery. The Three-Step Process of Machine Vibration Analysis Machine vibration analysis can be distilled into a three-step process:
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Vol. 13, Issue 1/2017, 77-83, DOI: 10.1515/cee-2017-0010 SCREENING EFFICIENCY ANALYSIS OF VIBROSIEVES WITH THE CIRCULAR VIBRATIONS Jelena M. DJOKOVI Ć1,*, Dejan I. TANIKI Ć1, Ružica R. NIKOLI Ć2, Saša M. KALINOVI Ć1 1 Technical Faculty in Bor, University of Belgrade, Serbia. 2 Faculty of Engineering, University of …
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Vibration analysis can be defined as a process that monitors vibration levels and investigates the patterns in vibration signals within a component, machinery, or structure to detect abnormal vibration events and to evaluate the overall condition of the test object. ... and can be used for detection of performance deviation, diagnosis of ...
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vibration but has elastic vibration in working frequency. It produces large dynamic stress on the beam and side plate when the screen body is in elastic vibration condition and the stress concentration results in dynamic response. So it appears as a fatigue failure in the structure of the beam and side plate [2-4].
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