Introduction of damping into the flexible multibody belt-drive model: A numerical and experimental investigation

Čepon, Gregor; Manin, Lionel; Boltežar, Miha

doi:10.1016/j.jsv.2009.02.001

Cited by 50 publications

(42 citation statements)

References 21 publications

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“…A flat rubber belt drive is modeled using the two-dimensional beam elements without shear deformation by Cepon [9,10]. In addition, a two-dimensional shear-deformable beam element based on absolute coordinate proposed by Omar and Shabana [11] is modified by Kerkkanen et al.…”

Section: Introductionmentioning

confidence: 99%

Elastic dynamic analysis of synchronous belt drive system using absolute nodal coordinate formulation

Jia

Song

2015

Nonlinear Dyn

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When synchronous belts are engaging with sprockets, they have complicated dynamic behaviors because of their complex composition. The inertial and damping forces of synchronous belt cannot be neglected when the belt is in a state of high acceleration or high-speed transmission, and these factors considerably influence the selection of belt type and the overall design of the system. The pretensioning force also significantly influences the stress state and fatigue life of synchronous belts, so a pretensioning analysis should be carried out before the elastic dynamic analysis. Our goal in this work is to study the precise influence of inertial and damping forces on the dynamic performance of synchronous belts under high acceleration or high speed. Toward this end, the pretensioning and elastic dynamic analysis of a synchronous belt drive system using two-dimensional beam elements without shear deformation based on the absolute nodal coordinate are studied in this paper. To verify the results of the elastic dynamic analysis, a rigid-flexible coupling dynamic simulation of synchronous belt drive system with the dynamic software RecurDyn is also carried out. The

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Section: Introductionmentioning

confidence: 99%

Elastic dynamic analysis of synchronous belt drive system using absolute nodal coordinate formulation

Jia

Song

2015

Nonlinear Dyn

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“…The V-belt can be treated as a viscoelastic linear model [3,15,17]. The model can be characterized according to Fig.…”

Section: Defining the Viscoelasticity Of V Beltsmentioning

confidence: 99%

The power transmission stability and efficiency of V-belts

Kátai¹,

Szendró

Gárdonyi

2016

Progress in Agricultural Engineering Sciences

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Abstract. The V-belt drive is a rather popular, widely used form of power transmission in agricultural and food industry engineering. At the same time, its stability, the lifetime of V-belt is influenced by several environmental factors, namely in the food industry by the contamination affecting the belt sides, the ambient temperature, humidity and the occasionally aggressive (acidic, alkaline air, air saturated with gases, etc.) medium. In the case of agricultural machinery, the vibration caused by uncertainly oriented pulleys with bearing in different plate structures (often being shaken in the fields) as well as alignment adjustment inaccuracies jeopardize the reliability of the parameters of the drive. Furthermore, the efficiency is determined by several factors together: the slippage occurring during drive transmission, the hysteresis loss resulting from the external and internal friction occurring with the belt entering and exiting the pulley. Experimental equipment and calculation methods were developed to determine the dynamics of temperature increase generated by the belt and pulley relationship. The temperature generated in the V-belt was measured as a function of pretension, pulley diameter and bending frequency. The so-called damping factor characterizing the contact with the pulley (the external friction when entering and exiting the groove) and the hysteresis loss (inner friction) are also determined. On the basis of the damping factor (≈ 400 Ns/m 2 ) of the Vbelt involved in the experiments the other losses (Poth) occurring from the pulley-V-belt contact and internal friction may be estimated. The drive parameters may be optimized with the mathematical model describing the effect of the pulley diameter and belt frequency on the increase in temperature.A standardized calculation method as well as design factors valid for the properly adjusted drive and normal operating conditions determined through empirical and laboratory experiments are used for the sizing of V-belt drives. The lifetime of V-belt drives designed in this way, used in extreme conditions typical of agricultural machinery will not be appropriate and will not provide clear, predictable information for maintenance planning. In such cases the results of our own many lifetime tests conducted in the given circumstances can be safely relied on.The agricultural harvesting machines are large plate-body self-propelled structures on which most of the power supply of the (threshing, cleaning, moving, etc.) machine units handling the crop is realized via belt drives. The distance and angular displacement of the axes involved in the drive can vary within wide limits. The misalignment and angular displacement of the pulleys can be the result of installation instability -due to the plate structure -and the deformation of the plate structure occurring during the * Corresponding author. Phone: +36-28-522080, E-mail: gardonyi.peter@gek.szie.hu 1 Institute of Mechanics and Machinery, Faculty of Mechanical Engineering, Szent István University, Páter K...

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Section: Introductionmentioning

confidence: 99%

“…In [15] the effect of the non-dimensional axial pre-stress of eigenfrequencies on a simply supported beam is researched. The pre-stress effect is included in the model of a flexible multibody belt-drive [16], where the belt-drive is modeled with ANCF two-dimensional shear deformable beam elements that account for the longitudinal and shear deformations.When modeling mechanical systems [17-20] a validation is needed to evaluate the results from the numerical model, this can be done using different methods of validation. Numerical results can be compared to: measured values of a real engineering application [21], measured values of a custom-designed experimental setup [22] or to another…”

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confidence: 99%

Absolute Nodal Coordinate Formulation in a Pre-Stressed Large-Displacements Dynamical System

Skrinjar

Slavič

Boltežar

2017

Stroj. vest. - Jour. Mech. Eng.

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The design process for dynamical models has to consider all the properties of a mechanical system that have an effect on its dynamical response. In multi-body dynamics, flexible bodies are frequently modeled as rigid, resulting in non-valid Keywords: ANCF, pre-stress, multibody system, measurement Highlights • A numerical model of a rigid-flexible multibody system is used in the analysis of kinematic properties during switch-off. • A flexible body is modeled with the Absolute Nodal Coordinate Formulation to include the pre-stress effect. • The influence of different parameters on the switch-off time and the contact distance is investigated. • The numerical model was validated and shows good agreement with the experimental values. INTRODUCTIONWhen modeling dynamical systems the proper material and contact properties of the numerical model are crucial for simulating an accurate dynamic response. One of the properties to be considered is the effect of pre-stress on rigid and flexible bodies, as it can have a significant impact on the dynamical response of multibody mechanical systems.The modeling of deformable bodies in a multibody system can be done using a floating frame of reference (FFR) [1], which is based on the classic finite element (FE) method that is widely used in a variety of applications [2] and [3]. While in a floating frame of reference formulation a mixed set of absolute reference and local elastic coordinates are used, in the absolute nodal coordinate formulation (ANCF) only absolute coordinates are used, which include global displacement and global vector gradients [4]. The ANCF is a non-incremental method and it has been used for solving many different problems in mechanics, such as vehicle components [5] and [6], the modeling of belt drives [7], railroad applications [8], bio-mechanics [9] and also in the field of digital image correlation (DIC) [10]. The main features of the ANCF are a constant mass matrix, zero centrifugal and Coriolis inertia forces and the possibility for exact modeling of rigid-body movement.The modeling of the pre-stress effect on bodies in mechanical systems is an interesting research topic in civil-engineering applications [11], where the static [12] and dynamic responses of structural elements are considered [13]. The effect of pre-stress is introduced to the ANCF finite elements to create an accurate model of a leaf spring, where pre-stress is evaluated based on the known geometrical states in the undeformed and deformed configurations that define the vector of absolute nodal coordinates [14]. In [15] the effect of the non-dimensional axial pre-stress of eigenfrequencies on a simply supported beam is researched. The pre-stress effect is included in the model of a flexible multibody belt-drive [16], where the belt-drive is modeled with ANCF two-dimensional shear deformable beam elements that account for the longitudinal and shear deformations.When modeling mechanical systems [17-20] a validation is needed to evaluate the results from the numerical model, this can be ...

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Introduction of damping into the flexible multibody belt-drive model: A numerical and experimental investigation

Cited by 50 publications

References 21 publications

Elastic dynamic analysis of synchronous belt drive system using absolute nodal coordinate formulation

Elastic dynamic analysis of synchronous belt drive system using absolute nodal coordinate formulation

The power transmission stability and efficiency of V-belts

Absolute Nodal Coordinate Formulation in a Pre-Stressed Large-Displacements Dynamical System

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