Acta Mechanica Solida Sinica

, Volume 27, Issue 6, pp 612–625 | Cite as

A Rectangular Shell Element Formulation with a New Multi-Resolution Analysis

Article

Abstract

A multi-resolution rectangular shell element with membrane-bending based on the Kirchhoff-Love theory is proposed. The multi-resolution analysis (MRA) framework is formulated out of a mutually nesting displacement subspace sequence, whose basis functions are constructed of scaling and shifting on the element domain of basic node shape functions. The basic node shape functions are constructed from shifting to other three quadrants around a specific node of a basic element in one quadrant and joining the corresponding node shape functions of four elements at the specific node. The MRA endows the proposed element with the resolution level (RL) to adjust the element node number, thus modulating structural analysis accuracy accordingly. The node shape functions of Kronecker delta property make the treatment of element boundary condition quite convenient and enable the stiffness matrix and the loading column vectors of the proposed element to be automatically acquired through quadraturing around nodes in RL adjusting. As a result, the traditional 4-node rectangular shell element is a mono-resolution one and also a special case of the proposed element. The accuracy of a structural analysis is actually determined by the RL, not by the mesh. The simplicity and clarity of node shape function formulation with the Kronecker delta property, and the rational MRA enable the proposed element method to be implemented more rationally, easily and efficiently than the conventional mono-resolution rectangular shell element method or other corresponding MRA methods.

Key Words

rectangular shell element multi-resolution analysis (MRA) resolution level (RL) basic node shape function mutually nesting displacement subspace sequence scaling and shifting 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2014

Authors and Affiliations

  • Yiming Xia
    • 1
    • 2
  • Yuanxue Liu
    • 1
  • Shaolin Chen
    • 2
  • Gan Tang
    • 2
  1. 1.Chongqing Key Laboratory of Geomechanics and Geoenvironmental Protection, Department of Civil EngineeringLogistical Engineering UniversityChongqingChina
  2. 2.Civil Engineering DepartmentNanjing University of Aeronautics and AstronauticsNanjingChina

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