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bending and vibration analysis of delaminated bernoulli–euler micro-beams using the modified couple stress
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نویسنده
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ebrahimzade n. ,jafari - talookolaei r. - a. ,teimoori k. ,rashidi-juybari s.
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منبع
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scientia iranica - 2018 - دوره : 25 - شماره : 2-B - صفحه:675 -688
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چکیده
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In this paper, we study static bending and free vibration behavior of bernoulli–euler microbeams with a single delamination using the modified couple stress theory. the delaminated beam is modeled by four interconnected subbeams using the delamination zone as their boundaries. the free and constrained mode theories have been utilized to model the interaction of delamination surfaces in the damaged area. the continuity as well as compatibility conditions are satisfied between the neighboring subbeams. after verification of the results for some case studies with available solutions, the effect of various parameters such as spanwise and thicknesswise locations of the delamination, material length-scale parameter, and boundary conditions on the static bending and free vibration characteristics of the size-dependent microbeam have been investigated in detail.
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کلیدواژه
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delaminated micro-beam ,free vibration ,modified couple stress theory ,free and constrained models
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آدرس
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babol noshirvani university of technology, department of mechanical engineering, iran, babol noshirvani university of technology, department of mechanical engineering, iran, city university of new york, city college, department of mechanical engineering, usa, babol noshirvani university of technology, department of mechanical engineering, iran
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Authors
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