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The Nonlinear Inplane Behavior and Progressive Damage Modeling for Laminate by Peridynamics

[+] Author Affiliations
Yin Yu, Su-Su Liu, Shu-Li Zhao, Zhefeng Yu

Shanghai JiaoTong University, Shanghai, China

Paper No. IMECE2016-65821, pp. V001T03A054; 11 pages
doi:10.1115/IMECE2016-65821
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerospace Technology
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5051-0
  • Copyright © 2016 by ASME

abstract

The modeling method of fiber-reinforced composites by state-based peridynamics was studied. The one-parameter nonlinear constitutive model was used to get the nonlinear relationship between force vector state and deformation vector state. Then the governing equation for laminate with nonlinear inplane behavior was built. A compensation modification method was also proposed to reduce the surface effects. A scalar function was introduced in the equation of force vector state in order to describe the damage. After the proposed compensation modification method was verified to reduce strain energy error of particles in the boundary region effectively, both unidirectional and orthotropic composite panels under uniaxial tension load were modeled. The resulting stress-strain curves fit well with the test data. Also, progressive damage analysis of composite panels with a center-hole was carried out, and the corresponding damage results agreed well with the experimental and simulating results of a relevant published research.

Copyright © 2016 by ASME
Topics: Laminates , Modeling , Damage

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