Hybrid finite element for analysis of functionally graded beams


SARITAŞ A. , Gurol T., Soydas O.

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, cilt.24, sa.3, ss.228-239, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 24 Konu: 3
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1080/15376494.2015.1128024
  • Dergi Adı: MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
  • Sayfa Sayıları: ss.228-239

Özet

A hybrid finite element model is presented, where stiffness and mass distributions over a beam with functionally graded material (FGM) are accurately modeled for both elastic and inelastic material responses. Von Mises and Drucker-Prager plasticity models are implemented for metallic and ceramic parts of FGM, respectively. Three-dimensional stress-strain relations are solved by a general closest point projection algorithm, and then condensed to the dimensions of the beam element. Numerical examples and verification studies on a proposed element demonstrate accuracy and robustness under inelastic material response as well as capturing fundamental, higher, and mix modes of vibration frequencies and shapes.