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Journal articles on the topic 'Multibody simulations - MBS'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Pappalardo, Carmine M., Mohil D. Patel, Brian Tinsley, and Ahmed A. Shabana. "Contact force control in multibody pantograph/catenary systems." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 230, no. 4 (2016): 307–28. http://dx.doi.org/10.1177/1464419315604756.

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In this paper, a new continuum-based pantograph/catenary model based on the absolute nodal coordinate formulation (ANCF) is proposed and used to develop an effective method to control the contact force which arises from the pantograph/catenary interaction. In the proposed new model, only one ANCF gradient vector is used in the formulation of the pantograph/catenary contact conditions, thereby allowing for using the proposed approach for both fully parameterized and gradient-deficient ANCF finite elements. The proposed contact formulation can also be considered as a more general sliding joint f

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2

Polach, Pavel, and Michal Hajzman. "58880 PARAMETER IDENTIFICATION OF THE MULTIBODY MODEL OF A NUCLEAR REACTOR CONTROL ASSEMBLY FOR BREAKDOWN STATES SIMULATIONS(Fluid-Structure Interaction in MBS)." Proceedings of the Asian Conference on Multibody Dynamics 2010.5 (2010): _58880–1_—_58880–9_. http://dx.doi.org/10.1299/jsmeacmd.2010.5._58880-1_.

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3

Pan, Yongjun, and Liang Hou. "Lifting and parallel lifting optimization by using sensitivity and fuzzy set for an earthmoving mechanism." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 2 (2016): 192–203. http://dx.doi.org/10.1177/0954407016660454.

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Earthmoving equipment in motor graders, which can be considered to be complex multibody systems (MBSs), are critical components for earthwork, compaction and re-handling. They have not yet received much attention due to their unusual applications and complicated structures. In this paper, a comprehensive study of an earthmoving MBS, from the mechanism identification and sensitivity analysis to the multi-objective optimization, is presented. First, the earthmoving MBS is identified to be a six degrees-of-freedom spatial hybrid mechanism, where a three revolute-revolute-prismatic-spherical (RRPS

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Aceituno, Javier F., Pu Wang, Liang Wang, and Ahmed A. Shabana. "Influence of rail flexibility in a wheel/rail wear prediction model." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 231, no. 1 (2016): 57–74. http://dx.doi.org/10.1177/0954409715618426.

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The aim of this paper is to study the influence of rail flexibility when a wheel/rail wear prediction model that computes the material loss based on an energy approach is used. The wheel/rail wear model used in this investigation is a simplified combined wear hypothesis that is based on the frictional energy loss in the contact patch. In order to account for wear and its distribution in a profiled wheel surface, the contact forces, creepages and location of the wheel/rail contact points are first calculated using a fully nonlinear multibody system (MBS) and three-dimensional contact formulatio

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Tang, Ai Hua. "Modeling and Validation of MBS Using Joint Force Actuator in ADAMS Car." Advanced Materials Research 482-484 (February 2012): 2257–60. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.2257.

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With the advent of multibody dynamics software (ADAMS) , it has become one of the main simulation techniques to build a multibody system (MBS) in order to evaluate the dynamics performance. The modeling of some component parts such as anti-roll bars and torsion beam rear suspensions is always difficult for the unique structural and non-linear characteristics.A joint force actuator based on multibody dynamics was introduced to represent the component within suspension systems. The kinematics analysis of the torsion beam rear suspension was carried out to validate accuracy and rationality by mea

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Lau, Albert, and Inge Hoff. "Simulation of Train-Turnout Coupled Dynamics Using a Multibody Simulation Software." Modelling and Simulation in Engineering 2018 (July 22, 2018): 1–10. http://dx.doi.org/10.1155/2018/8578272.

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With the advancements of computing power, multibody simulation (MBS) tool is used to study not only train dynamics but also more realistic phenomena such as train-track coupled dynamics. However, train-turnout coupled dynamics within MBS is still hard to be found. In this paper, a train-turnout coupled model methodology using a MBS tool GENSYS is presented. Dynamic track properties of a railway track are identified through numerical receptance test on a simple straight track model. After that, the identified dynamic track properties are adopted in a switch and crossing (turnout) to simulate tr

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Lommen, Stef, Gabriel Lodewijks, and Dingena L. Schott. "Co-simulation framework of discrete element method and multibody dynamics models." Engineering Computations 35, no. 3 (2018): 1481–99. http://dx.doi.org/10.1108/ec-07-2017-0246.

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Purpose Bulk material-handling equipment development can be accelerated and is less expensive when testing of virtual prototypes can be adopted. However, often the complexity of the interaction between particulate material and handling equipment cannot be handled by a single computational solver. This paper aims to establish a framework for the development, verification and application of a co-simulation of discrete element method (DEM) and multibody dynamics (MBD). Design/methodology/approach The two methods have been coupled in two directions, which consists of coupling the load data on the

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Tuohineva, Terho, Ilkka Väisänen, Antti Mäntylä, Teemu Kuivaniemi, Mauri Haataja, and Tero Frondelius. "Benchmarking of two flexible multibody dynamic simulation software in engine simulations." Rakenteiden Mekaniikka 51, no. 2 (2018): 32–48. http://dx.doi.org/10.23998/rm.69961.

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In this paper, two different commercial multibody dynamic (MBD) simulation software cases are studied. Due to the restrictions determined in the conditions of contract, the names of the software are not revealed, instead being called Software S and Software E. The central purpose of this research was to investigate the abilities of Software S in the simulation of a large engine, as a part of the strength analysis process. The abilities were studied by comparing the program with another, here called Software E, which is designed primarily for engine simulations. The capabilities of Software E h

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Hwang, Yunn Lin, and Thi Na Ta. "Uncertainty Analysis of CNC Machine Tools Based on Monte Carlo Method." Applied Mechanics and Materials 900 (July 2020): 9–13. http://dx.doi.org/10.4028/www.scientific.net/amm.900.9.

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The uncertainty of mechanical system performance is strongly influenced by the properties of system components such as mass, stiffness-damping coefficient, and friction coefficient. Based on computational simulations, the system performance under uncertainty conditions can be estimated. However, the nonlinear dynamic behavior of friction is difficult to simulate in numerical simulations, this research is therefore employed a smooth stick-slip friction force model instead of the Coulomb friction force model. Monte Carlo simulation (MCS) combined with multibody dynamic (MBD) simulation is propos

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Vlase, Sorin, Iuliu Negrean, Marin Marin, and Silviu Năstac. "Kane’s Method-Based Simulation and Modeling Robots with Elastic Elements, Using Finite Element Method." Mathematics 8, no. 5 (2020): 805. http://dx.doi.org/10.3390/math8050805.

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The Lagrange’s equation remains the most used method by researchers to determine the finite element motion equations in the case of elasto-dynamic analysis of a multibody system (MBS). However, applying this method requires the calculation of the kinetic energy of an element and then a series of differentiations that involve a great computational effort. The last decade has shown an increased interest of researchers in the study of multibody systems (MBS) using alternative analytical methods, aiming to simplify the description of the model and the solution of the systems of obtained equations.

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11

Miao, Bing Rong, Wei Hua Zhang, G. H. Huang, S. C. Wu, and Yong Xiang Zhao. "Research of High Speed Train Carbody Structure Vibration Behaviors and Structure Fatigue Strength Characteristic Technology." Advanced Materials Research 544 (June 2012): 256–61. http://dx.doi.org/10.4028/www.scientific.net/amr.544.256.

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The hybrid simulation method based on Multibody Simulation (MBS) and finite element method (FEM) were proposed here and applied to study the relation between carbody structure vibration behaviors and structure fatigue strength characteristic. The detailed steps include: Firstly, rigid-flexible couple vehicle multibody system dynamic model was created and performed to obtain the load time histories corresponded to the typical load cases. Secondly, the carbody structure stresses was calculated through Finite Element (FE) quasi-static stress method. Finally, with the material fatigue property and

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Rahikainen, Jarkko, Francisco González, Miguel Ángel Naya, Jussi Sopanen, and Aki Mikkola. "On the cosimulation of multibody systems and hydraulic dynamics." Multibody System Dynamics 50, no. 2 (2020): 143–67. http://dx.doi.org/10.1007/s11044-020-09727-z.

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Abstract The simulation of mechanical devices using multibody system dynamics (MBS) algorithms frequently requires the consideration of their interaction with components of a different physical nature, such as electronics, hydraulics, or thermodynamics. An increasingly popular way to perform this task is through co-simulation, that is, assigning a tailored formulation and solver to each subsystem in the application under study and then coupling their integration processes via the discrete-time exchange of coupling variables during runtime. Co-simulation makes it possible to deal with complex e

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Mohajer, Navid, Hamid Abdi, and Saeid Nahavandi. "Dynamic response multiobjective optimization of road vehicle ride quality—A computational multibody system approach." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 231, no. 2 (2016): 316–32. http://dx.doi.org/10.1177/1464419316664653.

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Computational multibody system (MBS) method is a practical technique utilized for modeling, simulation, and optimization of mechanical systems. In the methodology of computational multibody system, equations of motion are derived, formulated, and solved through a systematic, generalized, and well-structured computational-mathematical approach. In this paper, the computational multibody system formulation, based on the appended Lagrangian method, is implemented to establish the governing equations of ride dynamics for a nonlinear ride model that represents a versatile half-car two-track model o

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14

Müller, Andreas. "Implementation of A Geometric Constraint Regularization For Multibody System Models." Archive of Mechanical Engineering 61, no. 2 (2014): 365–83. http://dx.doi.org/10.2478/meceng-2014-0021.

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Abstract Redundant constraints in MBS models severely deteriorate the computational performance and accuracy of any numerical MBS dynamics simulation method. Classically this problem has been addressed by means of numerical decompositions of the constraint Jacobian within numerical integration steps. Such decompositions are computationally expensive. In this paper an elimination method is discussed that only requires a single numerical decomposition within the model preprocessing step rather than during the time integration. It is based on the determination of motion spaces making use of Lie g

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15

Miao, Bing Rong, Wei Hua Zhang, L. M. Zhang, Tao Zhu, and H. T. Yin. "Research of Modern Railway Vehicle Structure Fatigue Design Method Based on Multibody Dynamic Simulation." Advanced Materials Research 118-120 (June 2010): 327–31. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.327.

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For high-speed railway carbody structure durability analysis problems in China, one integrated method based on MBS (multibody simulation) is proposed here. Firstly, one EMU (Electricity Multiple Unit) full vehicle was performed to dynamic modeling and simulation. The numerical simulation results were applied to illustrate the vehicle dynamic characteristics. And the relationships between structural strength, stiffness, and frequency characteristics were also studied. Secondly, the multidisciplinary design technique was used to solve multi-mode coupled vibration of carbody structure on the cumu

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HOSODA, Mitsuru, Hirofumi TANAKA, and Yuki NISHINOMIYA. "Study on Generating of Rail Corrugation Using Vehicle/Track Multibody Dynamics Simulation." Proceedings of Mechanical Engineering Congress, Japan 2016 (2016): G1800202. http://dx.doi.org/10.1299/jsmemecj.2016.g1800202.

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17

Azzam, Baher, Ralf Schelenz, Björn Roscher, Abdul Baseer, and Georg Jacobs. "Development of a wind turbine gearbox virtual load sensor using multibody simulation and artificial neural networks." Forschung im Ingenieurwesen 85, no. 2 (2021): 241–50. http://dx.doi.org/10.1007/s10010-021-00460-3.

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AbstractA current development trend in wind energy is characterized by the installation of wind turbines (WT) with increasing rated power output. Higher towers and larger rotor diameters increase rated power leading to an intensification of the load situation on the drive train and the main gearbox. However, current main gearbox condition monitoring systems (CMS) do not record the 6‑degree of freedom (6-DOF) input loads to the transmission as it is too expensive. Therefore, this investigation aims to present an approach to develop and validate a low-cost virtual sensor for measuring the input

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18

Liong, Rugerri Toni, and Carsten Proppe. "Finite Element Multibody Simulation of a Breathing Crack in a Rotor with a Cohesive Zone Model." ISRN Mechanical Engineering 2013 (March 13, 2013): 1–10. http://dx.doi.org/10.1155/2013/249035.

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The breathing mechanism of a transversely cracked shaft and its influence on a rotor system that appears due to shaft weight and inertia forces is studied. The presence of a crack reduces the stiffness of the rotor system and introduces a stiffness variation during the revolution of the shaft. Here, 3D finite element (FE) model and multibody simulation (MBS) are introduced to predict and to analyse the breathing mechanism on a transverse cracked shaft. It is based on a cohesive zone model (CZM) instead of linear-elastic fracture mechanics (LEFM). First, the elastic cracked shaft is modelled by

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19

Golafshan, Reza, Georg Jacobs, Matthias Wegerhoff, Pascal Drichel, and Joerg Berroth. "Investigation on the Effects of Structural Dynamics on Rolling Bearing Fault Diagnosis by Means of Multibody Simulation." International Journal of Rotating Machinery 2018 (2018): 1–18. http://dx.doi.org/10.1155/2018/5159189.

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The present study aims to combine the fields modal analysis and signal processing and to show the use of Frequency Response Function (FRF), as a vibration transfer path, in enhancing reliability and abilities of the next generation vibration-based rolling bearing condition monitoring (CM) systems in complex mechanical systems. In line with this purpose, the hereby-presented paper employs an appropriate numerical model, that is, Multibody Simulation (MBS) of a vehicle’s drivetrain as a manner for numerical modal and structural analyses. For this, first, the principles of vibration-based bearing

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20

Abdullah, W. Mohd Zailimi Wan, Hishamuddin Jamaluddin, Mohd Hanif Harun, R. A. Rahman, and K. Hudha. "Modeling and Simulation of Railway Vehicle Using ADAMS/Rail." Applied Mechanics and Materials 548-549 (April 2014): 515–19. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.515.

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The aim of this paper is to develop computer simulation model of railway vehicle using multibody system (MBS) package. ADAMS/Rail was used in modeling and simulating complex realistic railway vehicle system to study their dynamics response to curve and straight track inputs. The Malaya Railway Limited or Keretapi Tanah Melayu Berhad (KTMB) railway vehicle is used as reference model to develop computer simulation model in ADAMS/rail. Curve track input was based on KTMB rail network with maximum curve radius of 1000 m. Straight track input with random vertical irregularity was applied to the 100

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21

Zhu, S. H., S. Zwiebel, and G. Bernhardt. "A theoretical formula for calculating damping in the impact of two bodies in a multibody system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, no. 3 (1999): 211–16. http://dx.doi.org/10.1243/0954406991522581.

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Clearance often exists in the connections of machine parts and causes impact between the parts during machine operation. A spring damper element is usually applied to predict the impact loads acting on the parts. In this paper the impact process is modelled as a two-degrees-of-freedom vibrational system. Based on the assumption that the loss of kinetic energy of the two parts during impact should be absorbed by the damper in the spring damper element that is applied to describe the impact process, a theoretical formula for estimating damping by impact between two parts is derived for the first

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22

Jang, Jin-Seok, Chang-Gyu Yoon, Chi-Young Ryu, Hyun-Woo Kim, Byung-Tae Bae, and Wan-Suk Yoo. "Optimization of the Switch Mechanism in a Circuit Breaker Using MBD Based Simulation." Scientific World Journal 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/347047.

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A circuit breaker is widely used to protect electric power system from fault currents or system errors; in particular, the opening mechanism in a circuit breaker is important to protect current overflow in the electric system. In this paper, multibody dynamic model of a circuit breaker including switch mechanism was developed including the electromagnetic actuator system. Since the opening mechanism operates sequentially, optimization of the switch mechanism was carried out to improve the current breaking time. In the optimization process, design parameters were selected from length and shape

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23

Compere, M. D., and R. G. Longoria. "Combined DAE and Sliding Mode Control Methods for Simulation of Constrained Mechanical Systems." Journal of Dynamic Systems, Measurement, and Control 122, no. 4 (2000): 691–98. http://dx.doi.org/10.1115/1.1320450.

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In dynamic analysis of constrained multibody systems (MBS), the computer simulation problem essentially reduces to finding a numerical solution to higher-index differential-algebraic equations (DAE). This paper presents a hybrid method composed of multi-input multi-output (MIMO), nonlinear, variable-structure control (VSC) theory and post-stabilization from DAE solution theory for the computer solution of constrained MBS equations. The primary contributions of this paper are: (1) explicit transformation of constrained MBS DAE into a general nonlinear MIMO control problem in canonical form; (2)

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Blanchette, Carl, Maxime Boisvert, Nicolas Joubert, Denis Rancourt, and Alain Desrochers. "Dynamic input loads evaluation of a recreational vehicle frame using multibody dynamics hybrid modeling validated with experimental and full analytical modeling data." Advances in Mechanical Engineering 13, no. 8 (2021): 168781402110346. http://dx.doi.org/10.1177/16878140211034608.

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Knowledge of frame loads at the limits of the intended driving conditions is important during the design process of a vehicle structure. Yet, retrieving these loads is not trivial as the load path between the road and the frame mounting point is complex. Fortunately, recent studies have shown that multibody dynamic (MBD) simulations could be a powerful tool to estimate these loads. Two main categories of MBD simulations exist. Firstly, full analytical simulations, which have received great attention in the literature, are run in a virtual environment using a tire model and a virtual road. Seco

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Wu, Tung-Yueh, Jyh-Jone Lee, and Edward C. Ting. "Motion analysis of structures (MAS) for flexible multibody systems: planar motion of solids." Multibody System Dynamics 20, no. 3 (2008): 197–221. http://dx.doi.org/10.1007/s11044-008-9108-4.

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Konowrocki, Robert, Dariusz Kalinowski, Tomasz Szolc, and Artur Marczewski. "Identification of safety hazards and operating conditions of the low-floor tram with independently rotating wheels with various drive control algorithms." Eksploatacja i Niezawodnosc - Maintenance and Reliability 23, no. 1 (2021): 21–33. http://dx.doi.org/10.17531/ein.2021.1.3.

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The aim of the article is to develop a method for the analysis of tram dynamics related to safety during operation. To achieve this, a mathematical model of the vehicle represented by a multibody simulation MBS system is used. Models of tram with a classic and innovative drive, based on a system of independently rotating wheels on crank axles are analyzed. A new configuration of an innovative drive control of the considered vehicle with the use of braking of independent wheels is proposed. A new geometry of test track is presented. During numerical investigation the values of ‘Y’ leading force

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Kao, B. G. "A Three-Dimensional Dynamic Tire Model for Vehicle Dynamic Simulations." Tire Science and Technology 28, no. 2 (2000): 72–95. http://dx.doi.org/10.2346/1.2135995.

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Abstract Traditional multibody dynamic (MBD) tire models concentrate on the tire patch force development and the tire in-plane characteristics. The tire lateral dynamics and nonlinear effects caused by the tire compliances during rough terrain driving and severe maneuvers are mostly neglected in vehicle analytical simulations. The tire finite element models, though capable of dealing with these phenomena, are basically not designed for quick vehicle dynamic evaluations. A simple three-dimensional (3-D) MBD tire model for full vehicle performance and maneuvering simulations over various road su

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Konieczny, Łukasz, Rafał Burdzik, and Piotr Folęga. "Multibody System Software Used for Research of Car Suspension System Dynamics." Advanced Materials Research 1036 (October 2014): 794–99. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.794.

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The paper presents results of investigation of car suspension system dynamics. In this research the multibody (Multi Body System - MBS) system software MSC.Adams was used. ADAMS software (MSC.Software) is a commercial software to build a multibody structural models. Modular design allows for the usage of applications with different focuses, such as rail, aviation and motor vehicles. Models with a large number of freedom degrees of the components are built with mass concentrated on the assumption that the system is composed of a rigid (or deformable) bodies combined in a specific way (connectio

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Łukaszewicz, Krzysztof, and Norbert Niechoćko. "Dynamic simulation of a virtual prototype of a one-track vehicle in motion on uneven ground conditions." MATEC Web of Conferences 254 (2019): 02015. http://dx.doi.org/10.1051/matecconf/201925402015.

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This article presents the procedure of designing and testing the virtual prototype of the one-track vehicle using the Autodesk Inventor Professional software. A multi-stage process of preparing the virtual prototype and the results of selected simulation tests were presented. During the first stage of work, a digital geometric model of the vehicle was created. The second stage includes placing the model in the dynamic simulation environment and defining the testing conditions corresponding to the actual vehicle operation conditions. The next phase relates to the realization of virtual model te

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Vrána, Tomáš, Josef Bradáč, and Jan Kovanda. "ELASTO-KINEMATIC COMPUTATIONAL MODEL OF SUSPENSION WITH FLEXIBLE SUPPORTING ELEMENTS." Acta Polytechnica 56, no. 2 (2016): 147. http://dx.doi.org/10.14311/ap.2016.56.0147.

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This paper analyzes the impact of flexibility of individual supporting elements of independent suspension on its elasto-kinematic characteristics. The toe and camber angle are the geometric parameters of the suspension, which waveforms and their changes under the action of vertical, longitudinal and transverse forces affect the stability of the vehicle. To study these dependencies, the computational multibody system (MBS) model of axle suspension in the system HyperWorks is created. There are implemented Finite-Element-Method (FEM) models reflecting the flexibility of the main supporting eleme

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Rodriguez, Victor Alfonso, Gabriel K. P. Barrios, Gilvandro Bueno, and Luís Marcelo Tavares. "Investigation of Lateral Confinement, Roller Aspect Ratio and Wear Condition on HPGR Performance Using DEM-MBD-PRM Simulations." Minerals 11, no. 8 (2021): 801. http://dx.doi.org/10.3390/min11080801.

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It has been known that the performance of high-pressure grinding rolls (HPGR) varies as a function of the method used to laterally confine the rolls, their diameter/length (aspect) ratio as well as their condition, if new or worn. However, quantifying these effects through direct experimentation in machines with reasonably large dimensions is not straightforward, given the challenge, among others, of guaranteeing that the feed material remains unchanged. The present work couples the discrete element method (DEM) to multibody dynamics (MBD) and a novel particle replacement model (PRM) to simula

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Kim, JunWoo, InHo Song, and JeongSeo Koo. "Prediction of Theoretical Derailments Caused by Cross-Winds with Frequency." Applied Sciences 11, no. 7 (2021): 2947. http://dx.doi.org/10.3390/app11072947.

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In this paper, theoretical derailment equations for cross-wind with frequency were derived to assess running safety. For a KTX (Korean high-speed train) unit, the wheel unloading ratios, which are the criteria for evaluating derailments in UIC (International union of railways) and TSI (Technical Specification for Interoperability) regulations, were calculated through the formula under the driving regulations according to cross-wind speeds, and the theoretical results were compared and evaluated through a multibody dynamics (MBD) simulation. In addition, the wheel unloading ratios were calculat

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Zawadzki, Adam, and Anna Al Sabouni-Zawadzka. "In Search of Lightweight Deployable Tensegrity Columns." Applied Sciences 10, no. 23 (2020): 8676. http://dx.doi.org/10.3390/app10238676.

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In civil engineering, there is an occasional need to assure an additional support for a structure due to the loss of the load carrying capacity (e.g., as a result of natural disasters or aging) or for a lightweight structure to support temporary objects (e.g., tents, big advertisement banners, temporary antenna masts). In the present study, the authors propose deployable tensegrity columns to be used in such cases. This paper is aimed at answering the question: Which tensegrity column would be the best for the specified application? Four tensegrity columns are analyzed in various deployment co

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Roesch, Oliver. "Model-Based On-Line Compensation of Path Deviations for Milling Robots." Advanced Materials Research 769 (September 2013): 255–62. http://dx.doi.org/10.4028/www.scientific.net/amr.769.255.

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Handling, welding or painting are currently the main fields of application for industrial robots. Due to their high flexibility and low investment costs industrial robots are increasingly used for machining processes in production environments. Robotic milling is one example of these processes, which nowadays can only be applied for tasks with low accuracy requirements and minor cutting forces. The main reason for this is the low stiffness of the robot structure and hence the huge deflection of the tool caused by the cutting forces. Robotic milling tests of aluminum show deviations of the prog

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Shabana, Ahmed A. "ANCF Tire Assembly Model for Multibody System Applications." Journal of Computational and Nonlinear Dynamics 10, no. 2 (2015). http://dx.doi.org/10.1115/1.4028479.

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The aim of this paper is to propose a new numerical approach for modeling tires in multibody system (MBS) applications. In this approach, the tires, including the rigid rim, are modeled using one mesh developed using the finite element (FE) absolute nodal co-ordinate formulation (ANCF). The FE tire mesh, which allows for high spinning speed, has a constant inertia matrix and zero Coriolis and centrifugal forces. The connectivity conditions between the tire tread and rim are imposed at a preprocessing stage using linear constraint equations, thereby allowing for the elimination of dependent var

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O'Shea, James J., Paramsothy Jayakumar, Dave Mechergui, Ahmed A. Shabana, and Liang Wang. "Reference Conditions and Substructuring Techniques in Flexible Multibody System Dynamics." Journal of Computational and Nonlinear Dynamics 13, no. 4 (2018). http://dx.doi.org/10.1115/1.4039059.

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The floating frame of reference (FFR) formulation is widely used in multibody system (MBS) simulations for the deformation analysis. Nonetheless, the use of elastic degrees-of-freedom (DOF) in the deformation analysis can increase significantly the problem dimension. For this reason, modal reduction techniques have been proposed in order to define a proper set of assumed body deformation modes. Crucial to the proper definition of these modes when the finite element (FE) FFR formulation is used is the concept of the reference conditions, which define the nature of the deformable body coordinate

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Recuero, Antonio M., Ulysses Contreras, Mohil Patel, and Ahmed A. Shabana. "ANCF Continuum-Based Soil Plasticity for Wheeled Vehicle Off-Road Mobility." Journal of Computational and Nonlinear Dynamics 11, no. 4 (2016). http://dx.doi.org/10.1115/1.4032076.

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This technical brief describes the procedure and demonstrates the feasibility of integrating soil/tire models using the absolute nodal coordinate formulation (ANCF). The effects of both the soil plasticity and the tire elasticity are captured using ANCF finite elements (FEs). Capturing the tire/soil dynamic interaction is necessary for the construction of higher fidelity off-road vehicle models. ANCF finite elements, as will be demonstrated in this paper, can be effectively used for the modeling of tire and soil mechanics. In this investigation, the soil model is developed using ANCF hexahedra

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Yu, Zuqing, Yiguan Liu, Brian Tinsley, and Ahmed A. Shabana. "Integration of Geometry and Analysis for Vehicle System Applications: Continuum-Based Leaf Spring and Tire Assembly." Journal of Computational and Nonlinear Dynamics 11, no. 3 (2015). http://dx.doi.org/10.1115/1.4031151.

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The development of new and complex vehicle models using the absolute nodal coordinate formulation (ANCF) and multibody systems (MBS) algorithms is discussed in this paper. It is shown how a continuum-based finite element (FE) leaf spring and tire assembly can be developed at a preprocessing stage and integrated with MBS algorithms, allowing for the elimination of dependent variables before the start of the dynamic simulations. Leaf springs, which are important elements in the suspension system of large vehicles, are discretized using ANCF FEs and are integrated with ANCF tire meshes to develop

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Recuero, Antonio M., and Ahmed A. Shabana. "A Simple Procedure for the Solution of Three-Dimensional Wheel/Rail Conformal Contact Problem." Journal of Computational and Nonlinear Dynamics 9, no. 3 (2014). http://dx.doi.org/10.1115/1.4026154.

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This paper describes a simple and efficient procedure for the treatment of conformal contact conditions with special emphasis on railroad wheel/rail contacts. The general three-dimensional nonconformal contact conditions are briefly reviewed. These nonconformal contact conditions, which are widely used in many applications because of their generality, allow for predicting online one point of contact, provided that the two surfaces in contact satisfy certain geometric requirements. These nonconformal contact conditions fail when the solution is not unique as the result of using conformal surfac

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Schulze, Martin, Stefan Dietz, Bernhard Burgermeister, et al. "Integration of Nonlinear Models of Flexible Body Deformation in Multibody System Dynamics." Journal of Computational and Nonlinear Dynamics 9, no. 1 (2013). http://dx.doi.org/10.1115/1.4025279.

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Current challenges in industrial multibody system simulation are often beyond the classical range of application of existing industrial simulation tools. The present paper describes an extension of a recursive order-n multibody system (MBS) formulation to nonlinear models of flexible deformation that are of particular interest in the dynamical simulation of wind turbines. The floating frame of reference representation of flexible bodies is generalized to nonlinear structural models by a straightforward transformation of the equations of motion (EoM). The approach is discussed in detail for the

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Müller, Andreas. "Semialgebraic Regularization of Kinematic Loop Constraints in Multibody System Models." Journal of Computational and Nonlinear Dynamics 6, no. 4 (2011). http://dx.doi.org/10.1115/1.4002998.

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Redundant constraints in multibody system (MBS) models, reflected by a singular constraint Jacobian, impair the efficient dynamics simulation. In particular, kinematic loop constraints are often found to be permanently redundant. This problem is commonly attacked numerically by decomposing the constraint Jacobian either at every simulation time step or beforehand in an admissible assembly (assuming that the redundancy is permanent). This paper presents a method for the elimination of permanently redundant loop closure constraints, which, instead of numerically decomposing the constraints, reli

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"THE STRESS EVALUATION OF THE TOGGLE MECHANISM OF THE THREEPLATEN INJECTION MOLDING MACHINE BY R-F COUPLED MBD MODEL." June-2020 9, no. 6 (2020): 5–9. http://dx.doi.org/10.29121/ijesrt.v9.i6.2020.2.

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The aim of the paper is to evaluate the mechanical behavior of the toggle mechanism of an injection mold machine. Different commercial simulation tools were combined to create a rigid-flexible (R-F) coupled multibody (MBD) model for the toggle system of the injection mold machine. Several flexible parts were included by importing the MNF files of the parts generated by the FE model. Then the R-F coupled MBD model of the toggle system were developed in the MBS software. The stress distribution of each component of the toggle system was illustrated. The results show that less stress is loaded at

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Daocharoenporn, Siripong, Mongkol Mongkolwongrojn, Shubhankar Kulkarni, and Ahmed A. Shabana. "Prediction of the Pantograph/Catenary Wear Using Nonlinear Multibody System Dynamic Algorithms." Journal of Tribology 141, no. 5 (2019). http://dx.doi.org/10.1115/1.4042658.

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In this investigation, computational multibody system (MBS) algorithms are used to develop detailed railroad vehicle models for the prediction of the wear resulting from the pantograph/catenary dynamic interaction. The wear is predicted using MBS algorithms for different motion scenarios that include constant-speed curve negotiation and acceleration and deceleration on a tangent (straight) track. The effect of the vehicle vibration in these different motion scenarios on the contact force is further used to study the wear rates of the contact wire. The wear model used in this investigation acco

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Rong, Bao, Xiaoting Rui, and Ling Tao. "Discrete Time Transfer Matrix Method for Launch Dynamics Modeling and Cosimulation of Self-Propelled Artillery System." Journal of Applied Mechanics 80, no. 1 (2012). http://dx.doi.org/10.1115/1.4006869.

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In many industrial applications, complex mechanical systems can often be described by multibody systems (MBS) that interact with electrical, flowing, elastic structures, and other subsystems. Efficient, precise dynamic analysis for such coupled mechanical systems has become a research focus in the field of MBS dynamics. In this paper, a coupled self-propelled artillery system (SPAS) is examined as an example, and the discrete time transfer matrix method of MBS and multirate time integration algorithm are used to study the dynamics and cosimulation of coupled mechanical systems. The global erro

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Stadlmayr, Daniel, Wolfgang Witteveen, and Wolfgang Steiner. "Reduction of Physical and Constraint Degrees-of-Freedom of Redundant Formulated Multibody Systems." Journal of Computational and Nonlinear Dynamics 11, no. 3 (2015). http://dx.doi.org/10.1115/1.4031553.

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Commercial multibody system simulation (MBS) tools commonly use a redundant coordinate formulation as part of their modeling strategy. Such multibody systems subject to holonomic constraints result in second-order d-index three differential algebraic equation (DAE) systems. Due to the redundant formulation and a priori estimation of possible flexible body coordinates, the model size increases rapidly with the number of bodies. Typically, a considerable number of constraint equations (and physical degrees-of-freedom (DOF)) are not necessary for the structure's motion but are necessary for its s

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"Dynamics of Multibody Systems (J. Wittenburg; 2008) [Book Review]." IEEE Control Systems 28, no. 5 (2008): 135–36. http://dx.doi.org/10.1109/mcs.2008.927330.

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Albers, Albert, and Jens Ottnad. "Integrated Structural and Controller Optimization in Dynamic Mechatronic Systems." Journal of Mechanical Design 132, no. 4 (2010). http://dx.doi.org/10.1115/1.4001380.

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In order to take into account the interaction between the part, dynamic system, control system, and changing mechanical behavior with all its consequences for the optimization process, a simulation of the complete mechatronic system is integrated into the optimization process within the research work presented in this paper. A hybrid multibody system (MBS) simulation, that is a MBS containing flexible bodies, in conjunction with a cosimulation of the control system represented by tools of the computer aided control engineering, is integrated into the optimization process. By an inner optimizat

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Staśkiewicz, Tomasz, Bartosz Firlik, and Julian Kominowski. "Out-of-round tram wheels – Multibody simulation study based on measured wheel rim geometry." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, February 11, 2021, 095440972199403. http://dx.doi.org/10.1177/0954409721994036.

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The article discusses the influence of out-of-roundness ( OOR) type of wheel shape deviations on its interaction with the rail. The analysis was carried out using multibody simulation technique ( MBS). Measurements of tram wheel rims and sample models of flat spots were used as input data. It has been observed that the presence of wheel OOR deviations caused a significant increase in vertical impact loads at the interface between the wheel and the rail, which favours rolling contact fatigue formation. Deviations created at the stage of manufacturing the wheel rim (usually while the profile of

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Hinkle, Adam R., Sachin Goyal, and Harish J. Palanthandalam-Madapusi. "Constitutive-Law Modeling of Microfilaments From Their Discrete-Structure Simulations—A Method Based on an Inverse Approach Applied to a Static Rod Model." Journal of Applied Mechanics 79, no. 5 (2012). http://dx.doi.org/10.1115/1.4006449.

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Twisting and bending deformations are crucial to the biological functions of several microfilaments such as DNA molecules. Although continuum-rod models have emerged as efficient tools to describe the nonlinear dynamics of these deformations, a major roadblock in the continuum–mechanics-based description of microfilaments is the accurate modeling of the constitutive law, which follows from their atomistic-level structure and interactions. In this paper, we present a method for estimating the constitutive law using a static rod model and deformed configuration data generated from discrete-struc

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Otsuka, Keisuke, Yinan Wang, and Kanjuro Makihara. "Versatile Absolute Nodal Coordinate Formulation Model for Dynamic Folding Wing Deployment and Flutter Analyses." Journal of Vibration and Acoustics 141, no. 1 (2018). http://dx.doi.org/10.1115/1.4041022.

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Aircraft performance can be improved using morphing wing technologies, in which the wing can be deployed and folded under flight conditions, providing a wide flight envelope, good fuel efficiency, and reducing the space required to store the aircraft. Because the deployment of the wing is a nonlinear-coupled motion comprising large rigid body motion and large elastic deformation, a nonlinear folding-wing model is required to perform the necessary time-domain deployment simulation, while a linear model is required to perform the frequency-domain flutter analysis. The objective of this paper is

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