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Composite Plate Subjected to Water Blast Loading

AHAMED, SHEIKH NAUNEHAL
http://rave.ohiolink.edu/etdc/view?acc_num=akron148156743660201

Abstract Details

, Master of Science, University of Akron, Mechanical Engineering.
This research investigates the structural response of a composite plate subjected to underwater blast. Two approaches were considered, the Taylor and the Structural Acoustic approach, to develop analytical solutions for the dynamic response of the plate by considering fluid – structure interaction as the shock wave passes through an acoustic medium and is affected by radiated acoustic waves from the plate. In the Taylor approach, the pressure load generated by fluid – structure interaction was incorporated into Lagrange’s equations of motion for the plate and the deformation of the plate was found by solving a set of coupled ordinary differential equations in MATLAB. It was shown that the Taylor approach captured fluid-structure interaction primarily by fluid damping effects. To improve the solution, the Structural Acoustic approach was used by taking into account the full radiated pressure spectrum for different harmonic frequencies. The pressure pulse was decomposed into Fourier exponential series and the radiated pressure fields for each harmonic frequency were numerically calculated in MATLAB. The generalized radiated pressure load obtained was substituted in the Lagrange’s equation of motion and then converted into algebraic equations by integration over the limit of the time period of the Fourier exponential expansion. These equations were again solved in MATLAB. Plate deformations were found to be on the same order of magnitude as that using the Taylor approach, although they were shown to consist of waves of very high frequencies. It was shown that the Structural Acoustic approach was closer to the FEA results than the Taylor approach. The Taylor solution had lower amplitude and a longer duration than the other two solutions.
Michelle S. Hoo Fatt (Advisor)
Graham Kelly (Committee Member)
Dane Quinn (Committee Member)
Mechanical Engineering

Recommended Citations

Citations

  • AHAMED, S. N. (n.d.). Composite Plate Subjected to Water Blast Loading [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron148156743660201

    APA Style (7th edition)

  • AHAMED, SHEIKH. Composite Plate Subjected to Water Blast Loading. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron148156743660201.

    MLA Style (8th edition)

  • AHAMED, SHEIKH. "Composite Plate Subjected to Water Blast Loading." Master's thesis, University of Akron. Accessed APRIL 23, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=akron148156743660201

    Chicago Manual of Style (17th edition)

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This open access ETD is published by University of Akron and OhioLINK.