TY - JOUR ID - 4252 TI - Bending and vibration analysis of delaminated Bernoulli–Euler micro-beams using the modified couple stress theory JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Jafari - Talookolaei, R. - A. AU - Ebrahimzade, N. AU - Rashidi - Juybari, S. AU - Teimoori, K. AD - Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol 47148-71167, Iran AD - Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol 47148 - 71167, Iran AD - Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol 47148 - 71167, Iran AD - Department of Mechanical Engineering, The City College of the City University of New York, NY 10031, USA Y1 - 2018 PY - 2018 VL - 25 IS - 2 SP - 675 EP - 688 KW - Delaminated micro-beam KW - free vibration KW - modified couple stress theory KW - Free and constrained models DO - 10.24200/sci.2017.4252 N2 - In this paper, we study static bending and free vibration behavior of Bernoulli–Euler micro-beams with a single delamination using the modified couple stress theory. The delaminated beam is modeled by four interconnected sub-beams 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 sub-beams. 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 micro-beam have been investigated in detail. UR - https://scientiairanica.sharif.edu/article_4252.html L1 - https://scientiairanica.sharif.edu/article_4252_8dfb6c21c9b15a1e5ed5dfcdeddae36f.pdf ER -