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Tuesday, July 9 • 11:10 - 11:30

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Shell structures, because of their ability to carry load in an efficient manner and provide aesthetic value to the structure are extensively used in various engineering and architectural fields. These structures, in most cases, are subjected to numerous types of transient loading conditions and therefore is extremely necessary for them to be analyzed under such conditions. Functionally graded materials (FGM) are the class of composites where two or more constituents vary continuously from one surface to another along preferred direction in a predetermined fashion thus introducing the effect of gradual variation in material properties. The present study focuses on the transient behavior of FG shallow and deep shell panels of various geometries under dynamic loading condition. The orthogonal curvilinear coordinate system has been used for defining the reference surfaces of various shell panels. The higher-order shear deformation theory (HSDT) is employed for the analysis of moderately thick shell panels. The shells are composed of ceramic and metallic constituents whose volume fractions are assumed to be varying continuously along the thickness of the shell according to four-parameter power law function thereby experiencing continuous variation in material properties throughout the thickness. The equation of motion has been discretized using finite element method (FEM) approach with eight-noded isoparametric curved element. The shells considered in the paper are subjected to uniformly distributed dynamic load on their top surface which are assumed to vary according to different functions of time. The time response of the structure subjected to various temporal forcing functions has been determined using Newmark time integration scheme. Convergence study, validation and various parametric studies involving the effects of boundary conditions, parameters of power law, geometries of the shell on the transient responses of the shell structures will be provided in the final version of the manuscript.


Elsa Piollet

Dr, Polytechnique Montréal
avatar for Mohammad Rafiee

Mohammad Rafiee

Postdoctoral Fellow, Polytechnique Montréal
Mohammad Rafiee received his Ph.D. degree in Mechanical Engineering from the University of Ottawa in 2018. Currently, he is a Postdoctoral Fellow at Polytechnique Montreal in Canada. His research interests are primarily focused on the development of advanced composite materials, smart... Read More →

Annie Ross

Professor, Polytechnique Montreal


Tuesday July 9, 2019 11:10 - 11:30 EDT
St-Laurent 8
  T07 Struct. dyn. & nonlin. vib., RS02 Vibr & cntrl of nonlin mech syst

Attendees (3)