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Numerical analysis and Experiment to Determine Deformation Characteristics of PET Bottle under Compressive Load

압축하중시 PET병의 변형특성에 관한 수치해석 및 실험적 연구

  • Received : 2013.11.12
  • Accepted : 2014.02.07
  • Published : 2014.02.15

Abstract

Many have been performed to decrease the thickness of polyethylene terephthalate (PET) bottles to reduce the manufacturing cost. However, it is difficult to guarantee the mechanical strength under top-loading after decreasing the thickness. This paper investigates the large deformation characteristics of a PET bottle under a compressive load using experimental and finite element analysis (FEA) data. A round 1.65-L bottle is analyzed under a compressive velocity of 5 mm/min with a maximum load of 9,800 N in experiments. The arc length method is used in a nonlinear FEA to understand the buckling phenomenon of the PET bottle. From the analyzed results, a recommendation is made to restrict the top loading to less than 1,208 N, because the first buckling phenomenon occurred at a load of 1,208 N.

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References

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