Structural Engineering and Mechanics

  • 제6권8호
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  • Pages.921-937
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  • 1998
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

A four-node degenerated shell element with drilling degrees of freedom

  • Kim, Ji-Hun (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Byung-Chai (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 발행 : 1998.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

A new four-node degenerated shell element with drilling degrees of freedom (DOF) is proposed. Allman-type displacement approximation is incorporated into the formulation of degenerated shell elements. The approximation improves in-plane performance and eliminates singularities of system matrices resulted from DOF deficiency. Transverse shear locking is circumvented by introducing assumed covariant shear strains. Two kinds of penalty energy are considered in the formulation for the purpose of suppressing spurious modes and representing true drilling rotations. The proposed element can be applied to almost all kinds of shell problems including composite laminated shell structures and folded shell structures. Numerical examples show that the element is of good accuracy and of reasonably fast convergence rate.

키워드

참고문헌

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피인용 문헌

  1. Improved Bilinear Degenerated Shell Element vol.12, pp.02, 2015, https://doi.org/10.1142/S0219876215500048