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Influence of surface irregularity on dynamic response induced due to a moving load on functionally graded piezoelectric material substrate

  • Singh, Abhishek K. (Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines)) ;
  • Negi, Anil (Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines)) ;
  • Koley, Siddhartha (Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines))
  • Received : 2018.04.13
  • Accepted : 2018.11.30
  • Published : 2019.01.25
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Abstract

The present study investigate the compressive stress, shear stress, tensile stress, vertical electrical displacement and horizontal electrical displacement induced due to a load moving with uniform velocity on the free rough surface of an irregular transversely isotropic functionally graded piezoelectric material (FGPM) substrate. The closed form expressions ofsaid induced stresses and electrical displacements for both electrically open condition and electrically short condition have been deduced. The influence of various affecting parameters viz. maximum depth of irregularity, irregularity factor, parameter of functionally gradedness, frictional coefficient of the rough upper surface, piezoelectricity/dielectricity on said induced stresses and electrical displacements have been examined through numerical computation and graphical illustration for both electrically open and short conditions. The comparative analysis on the influence of electrically open and short conditions as well as presence and absence of piezoelectricity on the induced stresses and induced electrical displacements due to a moving load serve as the salient features of the present study. Moreover, some important peculiarities have also been traced out by means of graphs.

Keywords

Acknowledgement

Grant : Mathematical Study on Wave Propagation Aspects in Piezoelectric Composite Structures with Complexities

Supported by : Department of Science and Technology, Science & Engineering Research Board (DST-SERB)

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