Gantry Crane

dynamic responses of a gantry crane system due to a moving body considered as moving ócillator pdf

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Jan 01, 2015 · The general approach in moving load problems at cranes is also used here, thus the system of the gantry crane (Fig. 1a) is divided into two parts: the framework (structure) and the moving system.The framework is a 2D […]

dynamic responses of a gantry crane system due to a moving body considered as moving ócillator pdf

Jan 01, 2015 · The general approach in moving load problems at cranes is also used here, thus the system of the gantry crane (Fig. 1a) is divided into two parts: the framework (structure) and the moving system.The framework is a 2D discrete model consisted of top beam with length L, pier leg with height H and sheer leg with height h.The discretization of the framework (Fig. 1b) is done by using FEM, with

Dynamic responses of a gantry crane system due to a moving

Download PDF Download. Share. Export. Advanced. Archives of Civil and Mechanical Engineering. Volume 15, Issue 1, January 2015, Pages 243-250. Original Research Article. Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator.

ACME-194; No. of Pages 8 Please cite this article in press as: N.Đ. Zrnić et al., Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator, Archives of

In this paper, a novel moving load model for 2D crane systems of which the trolley has two axles is proposed. Based on this model, the dynamics of a 2D gantry crane, which is modelled as a simply supported Euler–Bernoulli beam carrying a two-axle trolley from which a single-pendulum payload is suspended, is studied. The proposed model was verified by comparing with two models in existing

Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator Autorzy. Zrnić, N. D., The two-dimensional inertial effects of the moving body are included in derivation of differential equation of motion for the system. Factors as speed, acceleration and suspension characteristics of a moving body are

The problem of the crane structures load by vertical dynamic forces appeared also in [4] and [16], where the systems with moving mass were described. Reduction of dynamic overloads made by

Dynamic Responses of an Overhead Crane’s Beam Subjected to

An overhead crane with a flexible cable is an underactuated system; the vibration of the crane’s beam and the residual swinging of the payloads cause fatigue in the crane and affect the precise positioning of the payloads. In this paper, the coupling system of an overhead crane was simplified to that of a moving mass with pendulum swing passing beam model.

May 12, 2016 · Zrnić, N. D., Gašić, V. M., and Bosnjak, S. M, Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator. Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator 15, 243–250 (2015) Google Scholar

Abstract – A crane system offers a typical control problem being an under actuated MIMO system. In this paper the precise modelling of a 2D gantry crane system with 3 DOF is considered. First a simple dynamic model of the system is obtained using Lagrange’s equations of motion. Then, friction non-linearities were added to the model, which

The moving load problem is considered as a special standard finite element packages for analysing the dynamic response of gantry crane structures to time-variant moving loads.Paper[16]analyzesthree-dimensionalresponsesofa gantry crane structure due to moving loads with introduction of the moving mass matrix concept. As it is

Abstract – A crane system offers a typical control problem being an under actuated MIMO system. In this paper the precise modelling of a 2D gantry crane system with 3 DOF is considered. First a simple dynamic model of the system is obtained using Lagrange’s equations of motion. Then, friction non-linearities were added to the model, which

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Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator, Archives of Civil and Mechanical Engineering, 15(1): p. 243-250. Details Primary Language

shipbuilding gantry crane based on fuzzy analytical hierarchy process. Lifting the transportmachinery,2013,5,5-8. [16].Zrnic N.D.,Gasic V.M.,Bosnjak S.M. Dynamic responses of a gantry crane system due to a moving body considered as moving oscillator. Archives of civil and mechanical engineering,2015,15,243-250.

The report considers the version components of the runway system and the loads which act on them. of a crane gantry in a steel plant presents a startling contrast in that loads acting on the runway, a 15 ton capacity crane which is considered moderate in size can be given as an example. This crane spans 150 feet centre to centre of the

A tower crane is a type of crane with a hoist in a trolley which runs horizontally along gantry rails, usually fitted underneath a beam spanning between uprights which themselves have wheels so that the whole crane can move at right angles to the direction of the gantry rails. [9] Tower cranes are a modern form of balance crane that consist of

Considering the problem of moving heavy weights inside a workshop, the single-girder fixed-height wheel-mounted gantry crane provides the most flexible lifting solution offered by different styles of cranes especially for limited working areas because it can move to cover most of the work shop area in addition to its low cost and feasible use.

Dynamic behavior of bridge-erecting machine subjected to

The dynamic behavior of a bridge-erecting machine, carrying a moving mass suspended by a wire rope, is investigated. The bridge-erecting machine is modelled by a simply supported uniform beam, and a massless equivalent “spring-damper” system with an effective spring constant and an effective damping coefficient is used to model the moving mass suspended by the wire rope.

A crane is an item of plant intended for raising or lowering a load and moving it horizontally including the supporting structure of the crane and its foundations. There are a range of ‘fixed’ (tower, bridge, gantry, portal boom, vessel-mounted) and ‘mobile’ (slewing, non-slewing, vehicle loading) cranes.

Theoretically, as a moving loading imposed on a structural system, additional dynamic loading impact shall be deployed to the structure due to the following reasons: Regardless of effects from wind, shocking (due to stopping or starting), moving with loading would induce dynamic impact which has to be considered in structural analysis and design.

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A crane controlled by an operator who is not in a pulpit or in a cab attached to the crane, by any method other than a means suspended from the crane. CRANE, SEMI-GANTRY/ASME B30.2 A gantry with one end of the bridge rigidly supported on one or more legs that run on a fixed rail or runway, the other end of the bridge being supported by an end

3612634 | Control Theory | Mathematical Optimization

Recently, MPC has still been relevant in diferent crane control approaches as [29–33]. Concerning GPC, [34, 35] used this strategy to control an overhead crane system, while [36] applied a GPC to control an ofshore crane operation. Hence, in this section, the GPC described in [28] is adapted and rewritten to control crane systems.

A. AUXILIARY HOIST: Supplemental hoisting unit usually of lower load rating and higher speed than the main hoist. AXLE, FIXED: A shaft which is fixed in the end truck and about which the wheel revolves. AXLE, ROTATING: A shaft which is fixed in the wheel and which rotates on bearings fixed in the end truck. B. BEARING LIFE: The B-10 life of an anti-friction bearing is the minimum expected life

involves a range of requirements which must be considered during the planning of any lifting operation. This set of guidelines must be read in conjunction with the Code of Practice (CP) on Safe Lifting Operations in the Workplaces which act as an overarching document regarding lifting operations and the use of lifting equipment. 1.1 Scope