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Meso-scale modeling and damage analysis of carbon/epoxy woven fabric composite under in-plane tension and compression loadings

Journal Article · · International Journal of Mechanical Sciences
 [1];  [2];  [3];  [4];  [3];  [5];  [6];  [6]
  1. The Ohio State Univ., Columbus, OH (United States); The Ohio State Univ., Columbus, OH (United States)
  2. McMaster Univ., Hamilton, ON (Canada)
  3. Shanghai Jiao Tong Univ. (China). State Key Lab. of Mechanical Systems and Vibration
  4. Clemson Univ., SC (United States)
  5. Nanjing Tech Univ. (China). Key Lab. for Light-weight Materials
  6. Ford Motor Company, Dearborn, MI (United States)

The mechanical properties and damage behaviors of carbon/epoxy woven fabric composite under in-plane tension and compression are studied at the meso-scale level through experiment and simulation. An efficient representative volume element (RVE) modeling method with consistent mesh, high yarn volume fraction and realistic geometry is proposed. The material constitutive laws with plasticity, tension-compression asymmetry and damage evolution are established for the three components - yarn, matrix and interface, respectively. Significantly different mechanical properties and damage evolutions are observed depending on loading conditions and initial geometry characteristics. It shows a non-linear stress-strain curve with clear transition region and intensive damage in tension, while a quasi-linear behavior up to facture is observed in compression with little damage prior to final fracture. Furthermore, compared to the constant Poisson's ratio with straining in compression, a dramatic increase in Poisson's ratio appears in tension. Simulation shows damage mechanisms including transverse damage, matrix damage and delamination, which all play critical roles in the property evolution. In particular, the rapid damage accumulation after elastic deformation destroys the strong bonds and causes the easy deformation of transverse yarns which results in the transition region and large Poisson's ratio in tension. All the mechanical behaviors and damage evolutions are well captured and explained with the current RVE model.

Research Organization:
Ford Motor Company, Detroit, MI (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0006867
OSTI ID:
1848464
Alternate ID(s):
OSTI ID: 1671347
Journal Information:
International Journal of Mechanical Sciences, Journal Name: International Journal of Mechanical Sciences Journal Issue: C Vol. 190; ISSN 0020-7403
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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