dynamic modeling and abnormal contact analysis of rolling

Statistical Dynamics of the Rolling Mills

The backlashes gaps and rolling loads are always uncertain at the beginning of transient process in the hot rolling mills causing dynamic torques scattering in the multibody drive trains The low frequency (10–20 Hz) torsional vibrations are investigated The output dynamic

Fault Diagnosis of Batch Chemical Processes Using a

2019-12-12Fault diagnosis is important for ensuring chemical processes stability and safety The strong nonlinearity and complexity of batch chemical processes make such diagnosis more difficult than that for continuous processes In this paper a new fault diagnosis methodology is proposed for batch chemical processes based on an artificial immune system (AIS) and dynamic time warping (DTW) algorithm

Dynamic model and modal analysis of globoidal cam

The dynamic model of a new type of globoidal cam indexing mechanism with steel ball was established by use of Lagrange equation In the modeling process the mass of roller was neglected and the contact stiffnesses between roller and cam and between roller and

NRC: Extending the Dynamic Flowgraph Methodology

This report also describes guidelines for the screening of sequences for which a dynamic flowgraph methodology (DFM) analysis could be effectively applied The screening DFM modeling and DFM analysis processes are demonstrated via case studies within the general human reliability analysis approach provided by the ATHEANA framework

Designing Algorithms for Condition Monitoring and

Designing Algorithms for Condition Monitoring and Predictive Maintenance Predictive maintenance allows equipment users and manufacturers to assess the working condition of machinery diagnose faults or estimate when the next equipment failure

Dynamic modeling and numerical analysis of a cold

The dynamic characteristics in a rolling process have been investigated with various methods but a mathematical model to predict actual chatter vibration has not been established In this paper we propose a mathematical model of a cold rolling mill to predict chatter vibration The mathematical model was verified by experiment and theoretical analysis

INNOVATIVE METHODS OF MODELING GEAR FAULTS

2015-4-10183 Int J Mech Eng Rob Res 2013 Prashant Bagde et al 2013 INNOVATIVE METHODS OF MODELING GEAR FAULTS Prashant Bagde1* A V Vanalkar 1 and S R Ikhar *Corresponding Author: Prashant Bagde prashu bagde79gmail The gearbox is an important element of any machine so it is very important to make study on

Leaf Rolling Controlled by the Homeodomain Leucine

Leaf rolling is considered an important agronomic trait in rice ( Oryza sativa ) breeding To understand the molecular mechanism controlling leaf rolling we screened a rice T-DNA insertion population and isolated the outcurved leaf1 ( oul1 ) mutant showing abaxial leaf rolling The phenotypes were caused by knockout of Rice outermost cell-specific gene5 ( Roc5 ) an ortholog of the

Discrete mass modeling for dynamic response of

2020-5-22Discrete mass modeling for dynamic response of buildings in the vicinity of railway tracks due to train-induced ground vibrations M A Rezvani M Esmaeili and M M Feizi School of Railway Engineering Iran University of Science and Technology Narmak Tehran P O Box 16846-13114 Iran

Structural and Thermal Analysis on a Tapered Roller Bearing

2015-2-1element analysis (FEA) of a railroad bearing pressed onto an axle and was analyzed using ANSYS Analysis is carried out by considering certain radial load and thrust load Present work shows the stresses at various temperatures fatigue life vibration characteristics and the dynamic response of a structure under the action of time-dependent loads

Umat For Plane Stress

Crystal Plasticity Finite Element Analysis of Texture Evolution during Rolling of fcc Polycrystalline Metal Kyung-Hwan Jung 1 Dong-Kyu Kim Yong-Taek Im and Yong-Shin Lee2 + 1National Research Laboratory for Computer Aided Materials Processing Department of Mechanical Engineering KAIST 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 South

NRC: Extending the Dynamic Flowgraph Methodology

This report also describes guidelines for the screening of sequences for which a dynamic flowgraph methodology (DFM) analysis could be effectively applied The screening DFM modeling and DFM analysis processes are demonstrated via case studies within the general human reliability analysis approach provided by the ATHEANA framework

JZUS

This dynamic force has effects on the rolling contact of the wheel and the rail and causes the vibration and the noise radiation The dynamic force can also transmit to the track infrastructure through the rails and fasteners which causes vibration and noise radiation of the sleepers or slabs More details are given in (Wu 2012) The

Dynamic Interactions Between the Rolling Element

The dynamic model is verified by comparing simulation result with the published experimental data Based on this model the interaction forces and the contact positions between the rolling element and the cage with and without the rotational speed fluctuation are analyzed

Data modeling versus simulation modeling in the big

2017-6-9As a means of forecasting for a diversified society the phrase "big data" has become widespread The word means data sets with sizes beyond the ability of common software tools to capture curate manage and process within a tolerable elapsed time 1 Since such big data provides more insight than existing limited data it has received greater attention in diverse research fields

Study of the Development of Heterogeneous Grain

The present study aims to investigate the mechanism of the development of abnormal grain sizes in the through-thickness direction of hot rolled steel strips For this purpose industrially prepared steel strips were further hot rolled in a laboratory hot rolling mill setting a variety of rolling parameters As found the deformation rate in the hot rolling practice exerts an important role in

Dynamic risk analysis using alarm databases to

Part II presents step (iii) of the dynamic risk analysis methodology that is a novel Bayesian analysis method that utilizes near‐misses from distributed control system (DCS) and emergency shutdown (ESD) system databases—to calculate the failure probabilities of safety quality and operability systems (SQOSs) and probabilities of occurrence of incidents

Experimental and Numerical Prediction of Austenite Grain

lurgical modeling after the pioneering work by Sellars and Whiteman 1) Most of the applications of mathematical mod-els have been concentrated on hot plate or strip rolling for the last two or three decades but recently the interest in steel industry is about to change toward shape rolling espe-cially in bar rolling

Phase

Kugler G Turk R (2004) Modeling the dynamic recrystallization under multi-stage hot deformation Acta Mater 52(15):4659–4668 CrossRef Google Scholar Lee HW Im YT (2010) Numerical modeling of dynamic recrystallization during nonisothermal hot compression by cellular automata and finite element analysis

Coupled Vibration Behavior of Hot Rolling Mill Rolls

A coupled vibration model of hot rolling mill rolls under multiple nonlinear effects is established by considering the nonlinear spring force produced by the hydraulic cylinder the nonlinear friction between the work rolls the dynamic variation of rolling force and the effect of external excitation as well as according to the structural constraints of a four-high hot rolling mill in the

International Journal of Modelling Identification and

A new family of 5-D 6-D 7-D and 8-D hyperchaotic systems from the 4-D hyperchaotic Vaidyanathan system the dynamic analysis of the 8-D hyperchaotic system with six positive Lyapunov exponents and an application to secure communication design by Khaled Benkouider Toufik Bouden Mustak E Yalcin Sundarapandian Vaidyanathan

Dynamic Modeling and Analysis of Single

Boost Inverters under Normal and Abnormal Conditions Ali Kashefi Kaviani Florida International University akash002fiu edu Kashefi Kaviani Ali Dynamic Modeling and Analysis of Single-Stage Boost Inverters under Normal and Abnormal Conditions (2012) FIU Electronic Theses and Dissertations Paper 655

Leaf Rolling Controlled by the Homeodomain Leucine

Leaf rolling is considered an important agronomic trait in rice ( Oryza sativa ) breeding To understand the molecular mechanism controlling leaf rolling we screened a rice T-DNA insertion population and isolated the outcurved leaf1 ( oul1 ) mutant showing abaxial leaf rolling The phenotypes were caused by knockout of Rice outermost cell-specific gene5 ( Roc5 ) an ortholog of the

Dynamic analysis of rolling bearing system using

simulation model of rolling bearing using Algor code has been developed The software Algor uses the "event simulation" technique that combines finite element method FEM in time domain with dynamic events [1 12] The analysis and simulations of its kinematics dynamic and

Usak University Journal of Material Sciences

rolling mill abnormal vibration model on the basis of foregoing analysis Yan et al [23] have built a simulation model of the F3 mill's main drive system using MATLAB software They analyzed the dynamic characteristics of the system during biting and exceptional vibration

Fault diagnosis for large

2011-11-23FINITE ELEMENT ANALYSIS OF WIND TURBINE ROLLING BEARING The contact between the rollers and the inner race and the outer race of the wind turbine rolling bearing can regard as line contact Contact zone is composed of contact lines which arranged separately and gyroscopic couple and centrifugal force are neglected due to the bearing's low rotating speed

INNOVATIVE METHODS OF MODELING GEAR FAULTS

2015-4-10183 Int J Mech Eng Rob Res 2013 Prashant Bagde et al 2013 INNOVATIVE METHODS OF MODELING GEAR FAULTS Prashant Bagde1* A V Vanalkar 1 and S R Ikhar *Corresponding Author: Prashant Bagde prashu bagde79gmail The gearbox is an important element of any machine so it is very important to make study on