Abstract
In this study, the researchers try to examine nonlinear dynamic analysis and determine Dynamic load carrying capacity (DLCC) in flexible manipulators. Manipulator modeling is based on Timoshenko beam theory (TBT) considering the effects of shear and rotational inertia. To get rid of the risk of shear locking, a new procedure is presented based on mixed finite element formulation. In the method proposed, shear deformation is free from the risk of shear locking and independent of the number of integration points along the element axis. Dynamic modeling of manipulators will be done by taking into account small and large deformation models and using extended Hamilton method. System motion equations are obtained by using nonlinear relationship between displacements-strain and 2nd PiolaKirchoff stress tensor. In addition, a comprehensive formulation will be developed to calculate DLCC of the flexible manipulators during the path determined considering the constraints end effector accuracy, maximum torque in motors and maximum stress in manipulators. Simulation studies are conducted to evaluate the efficiency of the method proposed taking two-link flexible and fixed base manipulators for linear and circular paths into consideration. Experimental results are also provided to validate the theoretical model. The findings represent the efficiency and appropriate performance of the method proposed.
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References
L. B. da Veiga, C. Lovadina and A. Reali, Avoiding shear locking for the Timoshenko beam problem via isogeometric collocation methods, Comput. Methods Appl. Mech. Engrg., 241–244 (2012) 38–51.
B. O. Al-Bedoor and M. N. Hamdan, Geometrically nonlinear dynamic model of a rotating flexible arm, Journal of Sound and Vibration, 240 (1) (2001) 59–72.
A. Meghdari, A variational approach for modeling flexibility effects in manipulator arms, Robotica, 9 (1991) 213–217.
R. G. K. M. Aarts and J. B. Jonker, Dynamic simulation of planar flexible link manipulators using adaptive modal integration, Multibody System Dynamics, 7 (2002) 31–50.
B. Pratiher and S. K. Dwivedy, Non-linear dynamics of a flexible single link Cartesian manipulator, International Journal of Non-Linear Mechanics, 42 (2007) 1062–1073.
J. B. Jonker and R. G. K. M. Aarts, A perturbation method for dynamic analysis and simulation of flexible manipulators, Multibody System Dynamics (2001) 245–266.
R. Fotouhi, Dynamic analysis of very flexible beams, Journal of Sound and Vibration (2007) 521–533.
E. Bayo, Timoshenko versus Bernoulli-Euler beam theories for inverse dynamics of flexible robots, International Journal of Robotics and Automation, 4 (1) (1989) 53–56.
P. Salehi, H. Yaghoobi and M. Torabi, Application of the differential transformation method and variational iteration method to large deformation of cantilever beams under point load, Journal of Mechanical Science and Technology, 26 (9) (2012) 2879–2887.
M. E. Erguven and A. Gedikli, A mixed finite element formulation for timoshenko beam on winkler foundation, Computational Mechanics, 31 (2003) 229–237.
K. D. Hjelmstad and E. Taciroglu, Mixed variational methods for finite element analysis of geometrically non-linear, inelastic Bernoulli-Euler beams, Commun. Numer. Meth. Engng., 19 (2003) 809–832.
R. L. Taylor, F. C. Filippou, A. Saritas and F. Auricchio, A mixed finite element method for beam and frame problems, Computational Mechanics, 31 (2003) 192–203.
C. Sharma, Displacement / Mixed finite element formulation for beam and frame problems, Europen school of advanced studies in reduction of seismic, Master Thesis, October (2007).
R. Ranjan, Nonlinear finite element analysis of bending of straight beams using hp-spectral approximations, Journal of Solid Mechanics, 3 (1) (2011) 96–113.
Q. H. Nguyen, M. Hjiaj, B. Uy and S. Guezouli, A class of finite elements for nonlinear analysis of composite beams, Composite Construction in Steel and Concrete VI (2011) 566–577.
A. Ayoub and F. C. Filippou, Mixed formulation of nonlinear steel-concrete beam element, Journal of Structural Engineering (2000) 371–381.
R. Grimaldi, D. Addessi and V. Ciampi, Mixed finite elements for modeling non-linear structural responses, European Congress on Computational Methods in Applied Sciences and Engineering ECCOMAS (2004).
R. Grimaldi, D. Addessi and V. Ciampi, Mixed finite elements for non-linear material problems, European Congress on Computational Methods in Applied Sciences and Engineering ECCOMAS (2004) 1–20.
S. Abid, M. Taktak, F. Dammak and M. Haddar, An accurate two-node finite element for the pre-twisted beam modeling, Journal of Mechanical Engineering (2008) 135–150.
M. Thomas, H. C. Yuan-Chou and D. Tesar, Optimal actuator sizing for robotic manipulators based on local dynamic criteria, Journal of Mechanisms, Transmissions and Automation in Design, 107 (1985) 163–169.
L. T. Wang and B. Ravani, Dynamic load carrying capacity of mechanical manipulators. Part 2: computational procedure and applications, J. Dyn. Sys. Meas. Control, 110 (1988) 53–61.
D. R. Da and E. Papadopoulos, Online automatic tip-over presentation for mobile and redundant manipulators, Proceedings of the IEEE International Conference on Intelligent Robots and Systems (IROS’97) (1997) 1273–1278.
E. Papadopoulos and Y. Gonthier, A frame force for large force task planning of mobile and redundant manipulators, J. Robot Sys., 16 (3) (1999) 151–162.
M. H. Korayem and H. Ghariblu, The effect of base replacement on load carrying capacity of robotic manipulators, Int. J. Adv. Manufact. Technol., 23 (1) (2004) 28–38.
M. H. Korayem and H. Ghariblu, Maximum allowable load on wheeled mobile manipulators imposing redundancy constraints, Robotics Autonomous Syst., 44 (2003) 151–159.
Y. Maddahi, Calculation of load carrying capacity on a redundant manipulator, 2nd WSEAS Int. Conf. on Circuits, Systems, Signal and Telecommunications (CISST'08), Acapulco, Mexico (2008) 25–27.
M. H. Korayem and H. Ghariblu, Maximum allowable load on wheeled mobile manipulators, IJE Transactions A: Basics, 16 (3) (2003) 279–292.
S. Yue, S. K. Tso and W. L. Xu, Maximum dynamic payload trajectory for flexible robot manipulators with kinematic redundancy, Mech. Mach. Theory, 36 (2001) 785–800.
M. H. Korayem, M. Haghpanahi and H. R. Heidari, Maximum allowable dynamic load of flexible manipulators undergoing large deformation, Transaction B: Mechanical Engineering, Sharif University of Technology, February, 17 (1) (2010) 61–74.
M. H. Korayem and A. Heidari, Maximum allowable dynamic load of flexible mobile manipulators using finite element approach, Adv. Manuf. and Tech., 36 (2007) 606–617.
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Moharam Habibnejad Korayem was born in Tehran, Iran in 1961. He received his B.S. (Hon) and M.S. degrees in Mechanical Engineering from Amirkabir University of Technology in 1985 and 1987, respectively. He obtained his Ph.D. degree in Mechanical Engineering from the University of Wollongong, Australia in 1994. He is now a Professor of Mechanical Engineering at Iran University of Science and Technology. His research interests include dynamics of elastic mechanical manipulators, trajectory optimization, symbolic modeling, robotic multimedia software, mobile robots, industrial robotics standard, robot vision, soccer robot, and the analysis of mechanical manipulator with maximum load carrying capacity.
Habib Esfandiar was born in Iran in 1984. He is currently a Ph.D. degree student in Mechanical Engineering at Science and Research Branch, IAU, Tehran, Iran. His research has focused on dynamic modeling of flexible robotic manipulators, mobile robots, trajectory optimization, and game theory in engineering problems.
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Esfandiar, H., Korayem, M.H. Accurate nonlinear modeling for flexible manipulators using mixed finite element formulation in order to obtain maximum allowable load. J Mech Sci Technol 29, 3971–3982 (2015). https://doi.org/10.1007/s12206-015-0842-2
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DOI: https://doi.org/10.1007/s12206-015-0842-2