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Analysis and optimization of an 8 bar mechanism

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Abstract

This paper deals with an 8-bar mechanism, which finds its application in a deep drawing press. It is required in the process of deep drawing that the slider maintains an almost constant velocity during a portion of the return stroke. The approach for the kinematic simulation is based on loop closure analysis, which has been performed to derive expressions for slider displacement, slider velocity and slider acceleration. An extensive sensitivity analysis is carried out to identify key parameters affecting the mechanism. A modified Multiple Linear Regression (MLR) method is introduced, by splitting the displacement plot into three regions to consolidate the results, in order to account for an otherwise erroneous path generated by using the conventional MLR equation treating the plot as a single region. As an alternative method Artificial neural network (ANN) is introduced for consolidation of data. It is shown that ANN also proves to be a better and easier procedure for data consolidation. The consolidated data is used to derive the objective function for optimization. Genetic Algorithm is adopted for optimizing the mechanism with respect to the sensitive link lengths, satisfying the objective function.

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Acknowledgments

We would like to acknowledge Mr T. S. Ashwin for helping us with Artificial Neural Network (ANN). This work is supported in part by the TEQIP 1.2.1 research grant (World Bank), for the Centre of Excellence in Knowledge Analytics and Ontological Engineering (KAnOE) at PES Institute of Technology, Bangalore-560085, India.

Conflict of interest

The authors hereby declare that they have no conflict of interest.

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Authors and Affiliations

  1. Atria Institute of Technology, AGS Colony, 1st Main Road, Anand Nagar, Hebbal, Bangalore, 560024, India

    C. Balasubramanyam

  2. Department of Mechanical Engineering, PES Institute of Technology, III Stage BSK, Bangalore, 560085, India

    Amogh B. Shetty, K. R. Spandana, M. S. Ajay, B. Amoghavarsha & K. N. Seetharamu

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  1. C. Balasubramanyam
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  2. Amogh B. Shetty
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  3. K. R. Spandana
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  4. M. S. Ajay
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  5. B. Amoghavarsha
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  6. K. N. Seetharamu
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Correspondence to Amogh B. Shetty.

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Balasubramanyam, C., Shetty, A.B., Spandana, K.R. et al. Analysis and optimization of an 8 bar mechanism. Int. J. Mach. Learn. & Cyber. 6, 655–666 (2015). https://doi.org/10.1007/s13042-015-0368-z

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  • DOI: https://doi.org/10.1007/s13042-015-0368-z

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