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Dynamic response of deformable structures subjected to shock load and cavitation reload

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Abstract

The dynamic response of deformable structures subjected to shock load and cavitation reload has been simulated using a multiphase model, which consists of an interface capturing method and a one-fluid cavitation model. Fluid–structure interaction (FSI) is captured via a modified ghost fluid method (Liu et al. in J Comput Phys 190: 651–681, 2003), where the structure is assumed to be a hydro-elasto-plastic material if subjected to a strong shock load. Bulk cavitation near the structural surface is captured using an isentropic model (Liu et al. in J Comput Phys 201:80–108, 2004). The integrated multiphase model is validated by comparing numerical predictions with 1D analytical solutions, and with numerical solutions calculated using the cavitation acoustic finite element (CAFÉ) method (Sprague and Geers in Shocks vib 7:105–122, 2001). To assess the ability of the multiphase model for multi- dimensions, underwater explosions (UNDEX) near structures are computed. The importance of cavitation reloading and FSI is investigated. Comparisons of the predicted pressure time histories with different explosion center are shown, and the effect on the structure is discussed.

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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, Princeton University, EQUAD-E326, Princeton, NJ, 08544, USA

    W. F. Xie & Y. L. Young

  2. Institute of High Performance Computing, #01-01 The Capricorn, Singapore Science Park II, Singapore, 117528, Singapore

    T. G. Liu

  3. Department of Mechanical Engineering, National University of Singapore, 119260, Singapore, Singapore

    B. C. Khoo

Authors
  1. W. F. Xie
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  2. Y. L. Young
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  3. T. G. Liu
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  4. B. C. Khoo
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Correspondence to Y. L. Young.

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Xie, W.F., Young, Y.L., Liu, T.G. et al. Dynamic response of deformable structures subjected to shock load and cavitation reload. Comput Mech 40, 667–681 (2007). https://doi.org/10.1007/s00466-006-0132-z

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  • DOI: https://doi.org/10.1007/s00466-006-0132-z

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