Structural Engineering and Mechanics

  • 제2권3호
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  • Pages.295-309
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  • 1994
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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

On the numerical assessment of the separation zones in semirigid column base plate connections

  • Baniotopoulos, C.C. (The Institute of Steel Structures, Department of Civil Engineering, Aristotle University)
  • 발행 : 1994.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

The present paper concerns the mathematical study and the numerical treatment of the problem of semirigid connections in bolted steel column base plates by taking into account the possibility of appearance of separation phenomena on the contact surface under certain loading conditions. In order to obtain a convenient discrete form to simulate the structural behaviour of a steel column base plate, the continuous contact problem is first formulated as a variational inequality problem or, equivalently, as a quadratic programming problem. By applying an appropriate finite element scheme, the discrete problem is formulated as a quadratic optimization problem which expresses, from the standpoint of Mechanics, the principle of minimum potential energy of the semirigid connection at the state of equilibrium. For the numerical treatment of this problem, two effective and easy-to-use solution strategies based on quadratic optimization algorithms are proposed. This technique is illustrated by means of a numerical application.

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참고문헌

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피인용 문헌

  1. Steel T-Stub connections under static loading: an effective 2-D numerical model vol.44, pp.1-2, 1997, https://doi.org/10.1016/S0143-974X(97)00037-0
  2. Analysis of steel bolted connections by means of a nonsmooth optimization procedure vol.81, pp.26-27, 2003, https://doi.org/10.1016/S0045-7949(03)00311-0
  3. A gap element for three-dimensional elasto-plastic contact problems vol.61, pp.6, 1996, https://doi.org/10.1016/0045-7949(96)00111-3