COMPARATIVE ANALYSIS FOR LINK CROSS-SECTION OF MANIPULATOR ARMS
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Abstract
The stresses and deflections in robot arm was analyzed using ANSYS software package. Industrial robot analyzed in this work consists of three arms that have 2-DOF. The analysis of each
arm had been made separately. The maximum stress and deflection have been analyzed for a static applied at one end of the arm while has the other end fixed. Links of various cross-sections having same masses, length, and material properties to make a choice of the shape that gives a high stiffness to weight ratio have been examined. After specifying the best section for the arms of the robot an optimization process began to determine the dimensions of the arms sections which give the least deformation this had been done by the aid of a program build up by using the MATHCAD software package. In the beginning the program finds the optimum section in which the stress in the members not exceeds the allowable stress and finds the total weight of the robot after that the program begins to change the dimensions to satisfy the condition of minimum deflection of the whole robot after that the program estimates the best choices of the dimension for each section that gives the minimum weight and deflection. The dynamic behavior of the best chosen structure of industrial robot was studied to find the natural frequencies ( n w ) and mode shapes. The result shows that the hollow circular section is the best section for the first link while a square section is the best section for the other two links.
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References
Abdel-Malek, K. and Paul, B. (1998). “Criteria for the Design of Manipulator Arms for a High Stiffness to Weight Ratio”, SME Journal of Manufacturing Systems, Vol. 17, No. 3, P.P.209-220.
Alazard, D.; Chretien, J. P. (1992). “The Impact of Local Masses and Inertias on the Dynamic Modeling of Flexible Manipulators”.
Ceccarelli, M.; Carobone, G. and Ottaviano, E. (2005). “Multi Criteria Optimum Design of Manipulators”, Bulletin technical sciences Vol.53, No.1, P.P.9-18.
Edward Mebarak. (2003). “On the Development of an Automated Design Procedure to Design Optimal Robots”, Florida International University, Miami, Florida.
Fresonke, D. A.; Hernandez, E. and Tesar, D. (1993). “Deflection Predictions for Serial Manipulators”, in IEEE Conference on Robotics and Automation. Philadelphia, PA, pp482-487.
Haubach, C. (2002) “Flexible Robots-an Example of Stochastic Structural Optimization”. www.stoch.net/daten/publica1.htm#A
Hearn, E. g. (1977). “Mechanics of Materials”, Pergamon Press LTD.
Henessey, M. P.; Priebe, J. A.; Paul, C. H. and Grommes, R. J. (2000) “Design of a Lightweight Robotic Arm and Controller,” IEEE Conference on Robotics and Automation, Raleigh, NC. P.P.779-785.
Jaydeep Roy and Louis, L. Whitcomb. (1999). “Comparative Structural Analysis of 2-DOF Semi-Direct-Drive Linkages for Robot Arms”, IEEE/ASME Transactions on Mechatronics, Vol.4, No.1, pp.82-86.
Leu, M. C.; Dukovski, V. and wang, K. K. (1985). “An Analytical and Experimental Study of the Stiffness of Robot Manipulators with Parallel Mechanism”, ASME Robotics and Manufacturing Automation, Vol.15, P.P.137-143.
Marcus Pettersson; Petter Krus; Xiaolong Feng; Johan Andersson and Daniel Wappling. (2004). “Industrial Robot Design Optimization in the Conceptual Design Phase”. http://www.machine.ikp.lin.se/staff/johan/files/IEEE_mecanic and robot 2004.pdf
Paredis, C. J. and Khosla, P. K. (1996). “Designing Fault-Tolerant Manipulators: How Many Degress of Freedom?”, Int. J. Rob. Res., Vol. 15, No. 6, P.P. 611-628.
Rivin, E. I. (1988). “ Mechanical Design of Robots”, McGraw-Hill,Inc,Newyork.
Saeed Moaveni. (1999). “Finite Element Analysis Theory and Application with ANSYS”, Prentice-Hall.
Shiakolas, P. S.; Koladiya, D. and Kebrle, J. (2002). “Optimum Robot Design Based on Task Specifications Using Evolutionary Techniques and Kinematic, Dynamic, and Structural Constraints”, International Journal of inverse problem in engineering.Vol.10, No.4, P.P.359-375.
Shimon. Y. Nof. (1999). “Handbook of Industrial Robotics”, John Wiley and Sons, Inc., Newyork.
Williams, J. Angeles, and Bulca, F. (1993). “Design Philosophy of an Isotropic Six-Axis Serial Manipulator”, Robotics and Computer-Integrated Manufacturing, Vol.10, No.4, P.P.257-322.
Wu, E. C.; Hwang, J. C. and Chladek, J. T. (1993). “Fault-Tolerant Joint Development for the Space Shuttle Remote Manipulator System: Analysis and Experiment”, IEEE Trans. Robot. Automat, Vol. 9, No. 5, P.P. 675-684.