A study of transient responses of a submerged spherical shell under shock waves

Liang, Cho–Chung; Hsu, Ching-Yu; Lai, Wen-Hao

doi:10.1016/s0029-8018(99)00056-6

Cited by 21 publications

(7 citation statements)

References 17 publications

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“…As to semi-analytical approaches, Iakovlev (2002a) studied stress-strain state of a fluid-filled submerged cylindrical shell subjected to a spherical shock wave, and Iakovlev (2004) considered the dynamics of such a system incorporating a rigid coaxial cylindrical core. Another example of a semi-analytical approach is the study of Liang et al (2000) who coupled the finite element method with the doubly asymptotic approximations to investigate the response of a submerged spherical shell to an external shock wave.…”

Section: Article In Pressmentioning

confidence: 99%

External shock loading on a submerged fluid-filled cylindrical shell

Яковлев

2006

Journal of Fluids and Structures

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Section: Article In Pressmentioning

confidence: 99%

External shock loading on a submerged fluid-filled cylindrical shell

Яковлев

2006

Journal of Fluids and Structures

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“…Article published by EDP Sciences problems [2]. A full-scale and full-physic modelling of the explosion and ship response is therefore not accessible to the engineer so far, even if such problems tend to be nowadays modelled using whole ship analysis approaches [3,4], see Figure 1. Many Navies and shipbuilders throughout the world have conducted a series of experiments since the Second World War (from small scale/simple structures to full scale/real structures UNDEX testing [5], see for instance Fig.…”

Section: Introductionmentioning

confidence: 99%

A fully elastic model for studying submerged circular cylindrical shells subjected to a weak shock wave

Leblond

Яковлев

Sigrist

2009

Mécanique & Industries

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The transient dynamics of evacuated and fluid-filled circular elastic shells, submerged in an infinite fluid medium and subjected to an external weak shock wave, is considered in this paper. This circular shell/acoustic medium interaction problem has already been tackled with simplified thin shell models, based on the Love-Kirchhoff hypotheses for the structural dynamics. In this case, the resulting radiated pressure field displays some discrepancies related to the A0/S0 waves when compared to the experimental data available in the literature for the evacuated case. These drawbacks are overcome here by the use of an isotropic elastic model for the structural dynamics and an inviscid acoustic flow for the fluid dynamics, in a two-dimensional framework. The approach is based on the methods of Laplace transform in time, Fourier series expansions and separation of variables in space. For the fluid-filled case, the transient thick shell-weak shock wave interaction problem is explored and the radiated acoustic field described.

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“…At this point, we shall consider the solutions to the state equation (12). According to Taylor's expansion theorem, the state vector T ni (ξ ) can be written as [44] T ni (ξ ) = T ni (0) + T…”

Section: State-space Solutionmentioning

confidence: 99%

“…Yan et al [11] calculated sound transmission through a submerged and fluid filled elastic thin shell excited by incident acoustic waves in the interior domain using the coupled FEM and BEM method. Liang et al [12] addressed the problem of the transient response of a submerged spherical shell subjected to strong plane incident shock waves based on a procedure which couples the finite element method with the doubly asymptotic approximation. Fan and Tang [13] constructed a method for estimating the viscoelastic material parameters by using the experimental data (form functions) associated with a double elastic spherical shell covered with damping materials in water.…”

Section: Introductionmentioning

confidence: 99%

Acoustic wave interaction with a laminated transversely isotropic spherical shell with imperfect bonding

Hasheminejad

Maleki

2008

Arch Appl Mech

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An exact analysis is carried out to study interaction of a time-harmonic plane-progressive sound field with a multi-layered elastic hollow sphere made of spherically isotropic materials with interlaminar bonding imperfections. A modal state equation with variable coefficients is set up in terms of appropriate displacement and stress functions and their spherical harmonics, ultimately leading to calculation of a global transfer matrix. A linear spring model is adopted to describe the interlaminar adhesive bonding whose effects are incorporated into the global transfer matrix by introduction of proper interfacial transfer matrices. The solution is first used to correlate the perturbation in the material elastic constants of an evacuated and water submerged steel (isotropic) spherical shell to the sensitivity of resonances appearing in the backscattered amplitude spectrum. The backscattering form function, in addition to the acoustic radiation force acting on selected transversely isotropic spherical shells with distinct degrees of material anisotropy, is subsequently calculated and discussed. An illustrative numerical example is given for a multi-layered hollow sphere with two distinct interlaminar interface conditions (i.e., perfectly and imperfectly bonded layers). Limiting cases are considered and fair agreements with solutions available in the literature are established.

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A study of transient responses of a submerged spherical shell under shock waves

Cited by 21 publications

References 17 publications

External shock loading on a submerged fluid-filled cylindrical shell

External shock loading on a submerged fluid-filled cylindrical shell

A fully elastic model for studying submerged circular cylindrical shells subjected to a weak shock wave

Acoustic wave interaction with a laminated transversely isotropic spherical shell with imperfect bonding

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