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Post-buckling analysis of piezo-magnetic nanobeams with geometrical imperfection and different piezoelectric contents

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Abstract

Thermal post-buckling behavior of a geometrically imperfect/perfect piezo-magnetic nano-scale beams made of two-phase composites is analyzed in the present paper based on nonlocal elasticity theory. For the first time, the material properties of the nanobeam are considered as functions of piezoelectric phase percentage. All previous investigations on piezo-magnetic nanobeams neglect the effect of geometrical imperfection which is very important since the nanobeams are not always ideal or perfect. The post-buckling problem of such nanobeams is solved by introducing an analytical approach to derive buckling temperatures. The present solution is simple and easily understandable. For both perfect and imperfect smart nanobeams, it will be indicated that post-buckling temperature is dependent on the piezoelectric phase percentage, magnetic potential, electric voltage, imperfection amplitude and nonlocal effects.

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Acknowledgement

The authors would like to thank FPQ (Fidar project Qaem) for providing the fruitful and useful help.

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Authors and Affiliations

  1. Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar

    Seyed Sajad Mirjavadi, Galal M. Abdella & A. M. S. Hamouda

  2. Fidar Project Qaem Company, Co. Reg. Number: 459126, Darvazeh Dowlat, Tehran, Iran

    Masoud Forsat & Mohammad Reza Barati

  3. School of Mechanical Engineering, College of Engineering, Sharif University of Technology, Tehran, Iran

    Behzad Mohasel Afshari

  4. Department of Information Technology, College of Engineering, Payame Noor University (PNU), Tehran, Iran

    Samira Rabby

Authors
  1. Seyed Sajad Mirjavadi
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  2. Masoud Forsat
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  3. Mohammad Reza Barati
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  4. Galal M. Abdella
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  5. A. M. S. Hamouda
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  6. Behzad Mohasel Afshari
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  7. Samira Rabby
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Correspondence to Seyed Sajad Mirjavadi.

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Mirjavadi, S.S., Forsat, M., Barati, M.R. et al. Post-buckling analysis of piezo-magnetic nanobeams with geometrical imperfection and different piezoelectric contents. Microsyst Technol 25, 3477–3488 (2019). https://doi.org/10.1007/s00542-018-4241-3

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  • DOI: https://doi.org/10.1007/s00542-018-4241-3

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