Analysis of the problem by a vibration specialist is required. This guide is divided into two sections. The first section introduces concepts and methods ... structural gaps. When measuring vibration with a hand-held sensor, it is imperative that you perform consistent readings, paying close
Analyzed large vibrating screen's dynamic characteristics of single channel and hyperstatic network structure and calculated natural frequency, natural mode of vibration and dynamic response based ...
Demand for large vibrating screen is huge in the mineral processing industry. As bending and random vibration are not considered in a traditional design method for beam structures of a large vibrating screen, fatigue damage occurs frequently to affect the screening performance. This work aims to conduct a systematic mechanics …
Modal testing is the derivation of a mechanical model to describe the dynamic behavior of a structure by acquiring vibration measurements on the structure and analyzing them in such a way that the vibration modes (shapes associated with resonances) can be determined and visualized. ... Using computational analysis …
The experimental results confirm the established model and demonstrate the feasibility of ESSMAS, and the numerical simulation using the NEWMARK-β integration method significantly leads to the screen surface/rod having larger vibration intensity than that of the corresponding position on screen structure. A feasible method to improve …
The main objective of the work is to carry out an analysis of the dynamic forces transmitted from the vibrating screen to the structure, benefiting from an …
problems, the vibrating screen structure has been improved, and the rationality of structural improvement has been proved by comparative analysis. The research in this paper can provide a theoretical basis for the optimal design of vibrating screen structure and improve the reliability of design. References 1. Huo PF.
It is applicable to rotating, non-rotating equipment, continuous processes or even construction structure. In this paper, vibration analysis fundamentals as well as many studies on the method's application are reviewed. The purpose is to give an overview of how vibration analysis is used in many industries including petroleum to show its ...
The main structures of a vibrating screen are as shown in Fig. 2 (a). It usually consists of a screen body, a screen surface, four groups of vibration isolation system, and an excitation system (i.e., a unilateral-driven system and two box-type exciters). ... With the traditional dynamic model for kinetic analysis process of a …
Structural vibration testing and analysis contributes to progress in many industries, including aerospace, auto-making, manufacturing, wood and paper production, power generation, defense, consumer electronics, telecommunications and transportation. This application note provides an introduction to the basic concepts of structural vibration.
The authors present a new design of a hyperstatic net-beam structure and an optimal dynamic analysis of the vibrating screen. Finite element models of the screen …
Table 3 depicts the results of the failure modes of different components of vibrating screen used in company XYZ. A visual inspection approach was used to determine the percentage of failure (%) and the cumulative percentage of failures for each sub-components of the vibrating screen for a period of 6 years.
2. Understanding criteria for the vibration design of sensitive environments; 3. Refresher on dynamics of structural systems; 4. Understanding of the significance of the vibration path and how strategic siting and layouts can reduce the cost of vibration control; and, 5. Identify some of the implications of vibration control on structural design .
This paper presents a novel model for calculating the dynamic stress of a beam structure in a vibrating screen. The proposed model employs a dynamic screen …
Simulation of simplified the part structures of vibration screen by ANSYS software, and then establishes the finite element model of the linear vibration screen. Modal analysis and harmonic analysis of finite element model, and then according to the analysis results corresponding local structural modifications and adjust the center of …
A jacket structure consists of tubular steel members with welded connections, which are subject to fatigue deterioration. Locations along a weld, where fatigue cracks are likely to initiate and grow, are commonly denoted as (fatigue) hotspots (see Fig. 1).Inspections and vibration monitoring are performed to collect information on …
The structural integrity of aircraft structures under vibratory loads is primarily evaluated through vibration tests, but it is necessary to predict the design life through vibration fatigue analysis at the design stage. Vibratory loads affect the durability of aircrafts by combining with the dynamic characteristics of their structures. The …
Based on the need for knowledge of the dynamic forces generated by the vibrating screen to dimension its support structure, the study seeks to develop a …
In this work, the dynamic characteristics and screening performance of the disc spring vibration screen are studied. The modal simulation and experimental …
Aiming at the design defects of the existing structure of the linear vibrating screen, the finite element analysis model of the linear vibrating screen was established by Abaqus finite element ...
Abstract: Using ANSYS, static analysis and dynamic analysis were made for a certain large-scale linear vibrating screen structure, weak links were found out in structural design. The improved schemes were proposed for vibrating screen structure. The static and dynamics analysis's results of each schemes were compared, the optimal improved …
A feasible method to improve the reliability and processing efficiency of large vibrating screen via the application of an elastic screen surface with multiple attached substructures (ESSMAS) was proposed. In the ESSMAS, every screen rod, with ends embedded into elastomer, is coupled to the main screen structure in a relatively flexible …
The free vibration of an elastic body can be regarded as the superposition of a series of simple harmonic vibrations. To determine the natural frequency and corresponding vibration mode of free vibration, the following solutions of simple harmonic vibration are considered: (2) X (t) = φ s i n (ω t) (3) K S-ω 2 M S φ = 0 where ω and φ …
The excitation mechanisms seen in last section generate the vibration of the screen and this vibration is transmitted to its support structures. Thus, vibration isolators must be used between the screen box and the support structures in order to transmit very low force and generate lower vibration levels. The most commonly used
DOI: 10.1016/J.CSEFA.2017.04.001 Corpus ID: 116442590; Failure and sensitivity analysis of a reconfigurable vibrating screen using finite element analysis @article{Ramatsetse2017FailureAS, title={Failure and sensitivity analysis of a reconfigurable vibrating screen using finite element analysis}, author={Boitumelo …
But the tunnel blasting often leads to the damage or failure of the supporting structure. The vibration response and failure modes of the temporary support structure under blasting excavation of tunnels were analyzed through field tests, finite element simulations and theoretical analysis. The results and suggestions are as follows. (1)
Modal analysis is one of the most effective methods to study the dynamic characteristics of structures, 29 and each mode has a specific natural frequency and mode shape to reflect the natural vibration characteristics of its mechanical structure. 30 To simplify the model and improve the simulation efficiency, the actual vibration screen is ...
the many benefits of a vibration analysis program. However, a key component in the industry that escapes the more traditional analysts is the vibrating screen. The vibrating screen is normally overlooked as being a key component for analysis on the initial sight assessment. This is, in part, due to their size and seemingly violent motion.
