Journal of Computational Design and Engineering

Society for Computational Design and Engineering (한국CDE학회)
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Prediction and optimization of thinning in automotive sealing cover using Genetic Algorithm

  • Kakandikar, Ganesh M. (Dnyanganga College of Engineering & Research, Savitribai Phule Pune University) ;
  • Nandedkar, Vilas M. (Production Engineering, Shri Guru Gobind Singhji Institute of Engineering & Technology)
  • Received : 2015.03.29
  • Accepted : 2015.08.10
  • Published : 2016.01.01
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Abstract

Deep drawing is a forming process in which a blank of sheet metal is radially drawn into a forming die by the mechanical action of a punch and converted to required shape. Deep drawing involves complex material flow conditions and force distributions. Radial drawing stresses and tangential compressive stresses are induced in flange region due to the material retention property. These compressive stresses result in wrinkling phenomenon in flange region. Normally blank holder is applied for restricting wrinkles. Tensile stresses in radial direction initiate thinning in the wall region of cup. The thinning results into cracking or fracture. The finite element method is widely applied worldwide to simulate the deep drawing process. For real-life simulations of deep drawing process an accurate numerical model, as well as an accurate description of material behavior and contact conditions, is necessary. The finite element method is a powerful tool to predict material thinning deformations before prototypes are made. The proposed innovative methodology combines two techniques for prediction and optimization of thinning in automotive sealing cover. Taguchi design of experiments and analysis of variance has been applied to analyze the influencing process parameters on Thinning. Mathematical relations have been developed to correlate input process parameters and Thinning. Optimization problem has been formulated for thinning and Genetic Algorithm has been applied for optimization. Experimental validation of results proves the applicability of newly proposed approach. The optimized component when manufactured is observed to be safe, no thinning or fracture is observed.

Keywords

References

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