DOI QR코드

DOI QR Code

Large displacement analysis of inelastic frame structures by convected material frame approach

  • Chiou, Yaw-Jeng (Department of Civil Engineering, National Cheng Kung University) ;
  • Wang, Yeon-Kang (Department of Civil Engineering, Chung-Cheng Institute of Technology, National Defense University) ;
  • Hsiao, Pang-An (Department of Civil Engineering, National Cheng Kung University) ;
  • Chen, Yi-Lung (Department of Civil Engineering, National Cheng Kung University)
  • 발행 : 2002.02.25

초록

This paper presents the convected material frame approach to study the nonlinear behavior of inelastic frame structures. The convected material frame approach is a modification of the co-rotational approximation by incorporating an adaptive convected material frame in the basic definition of the displacement vector and strain tensor. In the formulation, each discrete element is associated with a local coordinate system that rotates and translates with the element. For each load increment, the corresponding strain-displacement and nodal force-stress relationships are defined in the updated local coordinates, and based on the updated element geometry. The rigid body motion and deformation displacements are decoupled for each increment. This modified approach incorporates the geometrical nonlinearities through the continuous updating of the material frame geometry. A generalized nonlinear function is used to derive the inelastic constitutive relation and the kinematic hardening is considered. The equation of motion is integrated by an explicit procedure and it involves only vector assemblage and vector storage in the analysis by assuming a lumped mass matrix of diagonal form. Several numerical examples are demonstrated in close agreement with the solutions obtained by the ANSYS code. Numerical studies show that the proposed approach is capable of investigating large deflection of inelastic planar structures and providing an excellent numerical performance.

키워드

과제정보

연구 과제 주관 기관 : National Science Council of Republic of China

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피인용 문헌

  1. Large Displacement Analysis of Cyclically Loaded Inelastic Structures vol.131, pp.12, 2005, https://doi.org/10.1061/(ASCE)0733-9445(2005)131:12(1803)
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  3. Elastoplasticité anisotrope non normale en grandes deformations avec endommagement vol.16, pp.6-7, 2007, https://doi.org/10.3166/remn.16.913-940