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http://dx.doi.org/10.12989/amr.2019.8.3.219

Analyzing nonlinear mechanical-thermal buckling of imperfect micro-scale beam made of graded graphene reinforced composites  

Khalaf, Basima Salman (Al-Mustansiriah University, Engineering Collage)
Fenjan, Raad M. (Al-Mustansiriah University, Engineering Collage)
Faleh, Nadhim M. (Al-Mustansiriah University, Engineering Collage)
Publication Information
Advances in materials Research / v.8, no.3, 2019 , pp. 219-235 More about this Journal
Abstract
This research is devoted to analyzing mechanical-thermal post-buckling behavior of a micro-size beam reinforced with graphene platelets (GPLs) based on geometric imperfection effects. Graphene platelets have three types of dispersion within the structure including uniform-type, linear-type and nonlinear-type. The micro-size beam is considered to be perfect (ideal) or imperfect. Buckling mode shape of the micro-size beam has been assumed as geometric imperfection. Modified couple stress theory has been used for describing scale-dependent character of the beam having micro dimension. Via an analytical procedure, post-buckling path of the micro-size beam has been derived. It will be demonstrated that nonlinear buckling characteristics of the micro-size beam are dependent on geometric imperfection amplitude, thermal loading, graphene distribution and couple stress effects.
Keywords
nonlinear buckling; graphene platelets; geometric imperfection; thermal loading; modified couple stress theory;
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Times Cited By KSCI : 14  (Citation Analysis)
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