Fibers and Polymers

  • 제5권3호
  • /
  • Pages.209-212
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  • 2004
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  • 1229-9197(pISSN)
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  • 1875-0052(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

Kinematics of the Nonsteady Axi-symmetric Ideal Plastic Flow Process

  • Alexandrov, S. (Institute for Problems in Mechanics, Russian Academy of Sciences) ;
  • Lee, W. (School of Materials Science and Engineering, Seoul National University) ;
  • Chung, K. (School of Materials Science and Engineering, Seoul National University, Research Institute of Advanced Materials, Seoul National University)
  • 발행 : 2004.09.01
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초록

A nonsteady axi-symmetric ideal flow solution is obtained here. It is based on the rigid perfect-plastic constitutive law with the Tresca yield condition and its associated flow rule. The process is to deform a circular solid disk into a spherical shell of prescribed geometry. It is assumed that there are no rigid zones and friction stresses. The solution obtained provides the distribution of kinematic variables and involves one undetermined function of the time. This function can be in general found by superimposing an optimality criterion.

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참고문헌

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