Damaged Zone Behavior Investigation Using Viscoelastic Models

Publish Year: 1392
نوع سند: مقاله کنفرانسی
زبان: English
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WMECH02_081

تاریخ نمایه سازی: 21 تیر 1393

Abstract:

In failure of orthotropic materials, there is a fracture zone devastated by the effects of the stress field at the crack tip. This region includes congeries of Micro-cracks and causes improving materials‟ properties against the failure by energy dissipation, but the failure analysis process is very difficult. So far, only the radius of this region has been investigated and to obtain the mechanical properties, less effort has been made. In this research, new approach, called FPZ viscoelastic model is proposed for accurate modeling of the crack tip local damage zone. This method incorporates numerical model, based on the viscoelasticity theory due to the growth of micro cracks, can accurately estimate mechanical properties of FPZ for orthotropic materials.

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Authors

Mehdi Fakoor

Assistant Professor

Mohammad Hossein Sabour

Assistant Professor

Nabi Mehri Khansari

Assistant Professor, ۳MSc. Student Department Of Aerospace Engineering, Faculty of New Sciences and Technologies, University Of Tehran, Tehran, Iran

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  • . Zdenek P. Bazant, Jaime Planas. Fracture and Size Effect ...
  • . 'Delayed failure _ The Griffith problem for linearly viscoelastic ...
  • . 'Analysis of crack form ation and crack growth in ...
  • . 'R-curve modeling of rate and size effects in quasibrittle ...
  • . 'Crack propagation in viscoelastic media , . Willis, J.R. ...
  • . 'Fracture processes in concrete and fiber reinforced cementitious composites ...
  • . A Viscoelastic Fictitious Crack Model for theFracture of Sea ...
  • . Dynamics of brittle fracture in media with a structure ...
  • . A Lattice Model for Viscoelastic Fracture. Slepyan, LI. 1999, ...
  • . 'Plane problem of a crack in a lattice, _ ...
  • . Method for determinatiow of the softening behavior of wood ...
  • . Mixed mode fracture criterion for wood based on a ...
  • . Reddy, J. N. An Introduction to Continuum Mechanics. s.l. ...
  • . A Stable Numerical Solusion Method For In-Plane Loading Of ...
  • . Application of the fictitious crack model o different types ...
  • . Theory of Viscoelasticity: an Introduction. _ Chrestensen, R.M. 1982, ...
  • . Creep theory of anisotropic solids. Betten, J. 1981, , ...
  • . Cracks in composite materials. G.C. Sih, P.C. Paris, G.R. ...
  • . USDA. WOOD HANDBOOK s.1. : USDA, 1910. ...
  • . A Lattice Model for Viscoelastic Fracture. L.I. Slepyan, et ...
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