Consistent multiscale analysis of heterogeneous thin plates with smoothed quadratic Hermite triangular elements

  • Boya Dong
  • Congying Li
  • Dongdong WangEmail author
  • Cheng-Tang Wu


A consistent multiscale formulation is presented for the bending analysis of heterogeneous thin plate structures containing three dimensional reinforcements with in-plane periodicity. A multiscale asymptotic expansion of the displacement field is proposed to represent the in-plane periodicity, in which the microscopic and macroscopic thickness coordinates are set to be identical. This multiscale displacement expansion yields a local three dimensional unit cell problem and a global homogenized thin plate problem. The local unit cell problem is discretized with the tri-linear hexahedral elements to extract the homogenized material properties. The characteristic macroscopic deformation modes corresponding to the in-plane membrane deformations and out of plane bending deformations are discussed in detail. Thereafter the homogenized material properties are employed for the analysis of global homogenized thin plate with a smoothed quadratic Hermite triangular element formulation. The quadratic Hermite triangular element provides a complete C1 approximation that is very desirable for thin plate modeling. Meanwhile, it corresponds to the constant strain triangle element and is able to reproduce a simple piecewise constant curvature field. Thus a unified numerical implementation for thin plate analysis can be conveniently realized using the triangular elements with discretization flexibility. The curvature smoothing operation is further introduced to improve the accuracy of the quadratic Hermite triangular element. The effectiveness of the proposed methodology is demonstrated through numerical examples.


Thin plate Multiscale analysis Homogenization Quadratic Hermite triangular element Curvature smoothing 



The support of this work by the National Natural Science Foundation of China (11222221, 11472233), the Natural Science Foundation of Fujian Province of China (2014J06001), and the Fundamental Research Funds for the Central Universities of China (20720150163) is gratefully acknowledged.


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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Boya Dong
    • 1
  • Congying Li
    • 1
  • Dongdong Wang
    • 1
    Email author
  • Cheng-Tang Wu
    • 2
  1. 1.Department of Civil EngineeringXiamen UniversityXiamenChina
  2. 2.Livermore Software Technology CorporationLivermoreUSA

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