Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Numerical Simulation of the Flat Die for Shape Optimization in the Single-screw Extrusion Process

  • Joon Ho Moon (Department of Mechanical Design Engineering, Andong National University) ;
  • See Jo Kim (Department of Mechanical Design Engineering, Andong National University)
  • Received : 2022.09.19
  • Accepted : 2022.10.09
  • Published : 2022.12.31
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Abstract

In this study, we chose a flat die to optimize a general die geometry. The optimization was aimed at obtaining a uniform velocity distribution across the exit of the die. For the optimization, the input and output design parameters were randomly computed, and response surfaces were generated to obtain statistical data for the minimum and maximum sensitivities computed during optimization. Subsequently, object functions with constraints were numerically computed to obtain the minimum errors in the velocity difference (i.e., variable "Outp" in this study). Finally, we obtained the candidate optimized dataset. Note that the current numerical computations were simultaneously conducted for an entire extruder, i.e., screw plus die. The numerical outlet velocity distributions in the modified die geometry tended to be much more uniform than the conventional distributions in the current optimization processes for this specific flat die.

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Acknowledgement

이 논문은 안동대학교 기본연구지원사업에 의하여 연구되었음.

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