Abstract
A new formulation for nonlinear, elastic wave propagation, based on the pressure and density, is introduced. The formulation accounts for a nonlinear relation between speed of sound and density. The pressure and density are interpolated by identical shape functions between the nodes. The equation of state is introduced in the discretized system, hence the nonlinearity is enforced point wise. This procedure concentrates on proper interpolation of the balance equations by relaxing the nonlinear constitutive relation between the nodes. A standard finite element procedure focuses on the constitutive equation and thereby produces a less consistent representation of the balance equation. In addition, the formulation accounts for fluid-structure interaction.
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© 1991 Computational Mechanics Publications
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Sandberg, G. (1991). A Finite Element Formulation for Nonlinear Wave Propagation with Application to Cavitation. In: Brebbia, C.A., Peters, A., Howard, D. (eds) Applications of Supercomputers in Engineering II. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3660-0_32
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DOI: https://doi.org/10.1007/978-94-011-3660-0_32
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-695-9
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