Dynamic Effect of Beam's Length and Beam's Theory on the Flexible Manipulators System
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2012, Vol 3, Issue 7
Abstract
In this paper, a comprehensive study is presented on the effect of beam's length, shear deformation and beam's theory on the dynamic modeling of single-link flexible manipulator. At the first step, Euler-Bernoulli beams theory (EBBT) is adopted. According to this model the effect of shear deformation is neglected. So, this model is only reliable for the case of slender beam. When the beam is short in length direction, shear deformation is an essential factor that may have significant effect on the system's dynamic. Thus in next step the Timoshenko beam theory (TBT) is considered. Here, two types of dynamic models, Euler-Bernoulli and Timoshenko, have been established and used to analyze the dynamic behavior of the system. This model is developed using Gibbs-Applle formulation and assumed mode method. Simulation exercises are performed with bang-bang input torque applied to the joint actuator for a single-link flexible manipulator. To study the effects of length on the dynamic response of the system, the results are evaluated with varying beam's length. Finally, a comparative assessment of different beam's length and beam's theory to the system performance is discussed and represented.
Authors and Affiliations
M. H. Korayem| Iran University of Science and Technology, School of Mechanical Engineering.Hkorayem@iust.ac.ir, A. M. Shafei| Iran University of Science and Technology, School of Mechanical Engineering., S. F. Dehkordi| IUST, School of Mechanical Engineering.
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