Dynamic Analysis and Motion Control of Hydraulic Crane for Men Lifting Using Modeling and Simulations

Doçi, Ilir; Bruqi, Mirlind; Qehaja, Nexhat

doi:10.2507/27th.daaam.proceedings.100

Cited by 5 publications

(7 citation statements)

References 4 publications

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“…Only few studies, to the authors' best knowledge, have aimed at implementing tools to assist the structural design process of forklift trucks [21,22]. Therein, the primary objective was evaluating the dynamic stresses affecting only the loaded mast assembly, during longitudinal motion and lifting maneuvers, by taking into account its compliance.…”

Section: Of 16mentioning

confidence: 99%

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Martini

Bonelli²,

Rivola

2020

Machines

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This study investigates the dynamic behavior of a recently developed counterbalance forklift truck. The final objective is creating virtual testing tools based on numerical multibody models to evaluate the dynamic stresses experienced by the forklift family of interest during a reference operating cycle, defined by the manufacturer’s testing protocols. This work aims at defining sufficiently accurate and easy-to-implement modelling approaches and validation procedures. It focuses on a specific test, namely the passage of a speed-bump-like obstacle at high velocity, which represents one of the most severe conditions within the reference cycle. Indeed, unlike most of the other wheeled vehicles, forklifts typically do not have advanced suspension systems and their dynamic response is significantly affected by ground irregularities. To this end, a preliminary model of the complete forklift, featuring rigid bodies and a simplified tire–ground contact model, is implemented with a commercial software. Experimental tests are conducted on the forklift to measure the vehicle vibrations when running on the obstacle, for model validation purposes. After model updating, the results provided by the numerical simulations match the experimental data satisfactorily. Hence, the modelling and validation strategies are proven viable and effective.

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Section: Of 16mentioning

confidence: 99%

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Martini

Bonelli²,

Rivola

2020

Machines

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“…Bhagat et al [1] developed the CAD model of a translation carriage for reach truck and performed the static analyse of it under various loading and boundary conditions using finite element analysis in ANSYS environment. Doçi et al [2] examined the structural behaviours of forklift under dynamic loadings and specified the parameters that affect the dynamic behaviours of forklift. Meshram [3] developed 3D models for the forklift mast with a change in geometry to perform of structural analysis using finite element method.…”

Section: Introductionmentioning

confidence: 99%

The Finite Element Analysis and Geometry Improvements of Some Structural Parts of a Diesel Forklift Truck

Bozkurt

Dai²,

Özbek³

2017

PEN

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In this work, static analyses of structural parts of a diesel forklift were performed using Finite Element Method and possible modifications based on the original geometry of parts were utilized with respect to stress distributions at critical region to improve reliability of the forklift design. The analyses were carried out according to standard regulations related with the examined parts. The structural parts of forklift such as chassis and head guard were analysed under compulsion loading conditions. The improvements in relevant parts were demonstrated by the comparison of stress values of original and modified geometries. The finite element analyses were carried out using MSC SimXpert Nastran Finite Element software package.

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Section: Introduction: a Shift To A User Experience–based Product Development Approach For Mobile Machinerymentioning

confidence: 99%

“…Many researchers have employed dynamic simulation models to describe the basic design and operation of machines. [6][7][8][9][10][11][12][13][14] Conversely, the involvement of the UX in the early phase of product development through simulation demands the description and faster computation for all sub-components and mechanisms of the mechanical systems in a realistic working environment. The multibody system (MBS) semi-recursive approach enables solution of the equations of motion of complex systems in real time.…”

mentioning

confidence: 99%

“…Conventional forklift simulation methods also focus on the development of the mast design system and do not consider the pulley and chain mechanisms or the realistic UX for the working cycles of the truck in the presence of the lifting loads. [6][7][8][9][10][11][12][13][14] The real-time multibody forklift model have been studied without discussing the hydraulics, pulley and chain mechanism and mast design system. 25 The objective of this study is to combine semirecursive approach, hydraulic actuators, tyres, and pulley and chain models with associated contacts in the real-time simulation model of a 3-W counterbalance 2.0-t EVOLT48 electric forklift for a realistic UX.…”

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confidence: 99%

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Targeting the user experience in the development of mobile machinery using real-time multibody simulation

Khadim

Kaikko²,

Puolatie³

et al. 2014

Advances in Mechanical Engineering

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Applying a semi-recursive multibody approach enables the solution of the equations of motion of a complex system in real time. This makes it possible to conduct human-in-loop simulations and analyse the user experience. The idea of recognizing the user experience to produce more efficient, competitive, and user-friendly products has been limited thus far to the field of information technology and the development of light physical products. This study introduces a simulation modelling procedure for a complex forklift mast system that can be used to help analyse the user experience. A multibody forklift model is introduced that includes the electric motors, a pump, a freelift, a mainlift and tilt cylinders, actuators, pulley and chain mechanisms, contacts, and tyres. The viscoelastic behaviour of the chain during longitudinal and transverse movement is simulated using a discrete model approach. Triplex mast speeds and hydraulic system efficiencies across working cycles are used to verify the performance of the introduced real-time simulation model against measurements taken from an equivalent reference forklift. To better evaluate the developed model, experienced and inexperienced forklift drivers were asked to drive an updated simulator and provide feedback. User experience inputs that can be made available early on in development using this new modelling approach will permit experts to evaluate and design more efficient complex mechanical systems.

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Dynamic Analysis and Motion Control of Hydraulic Crane for Men Lifting Using Modeling and Simulations

Cited by 5 publications

References 4 publications

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

Virtual Testing of Counterbalance Forklift Trucks: Implementation and Experimental Validation of a Numerical Multibody Model

The Finite Element Analysis and Geometry Improvements of Some Structural Parts of a Diesel Forklift Truck

Targeting the user experience in the development of mobile machinery using real-time multibody simulation

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