Convergence rates of solutions to the compressible Hookean elastodynamics
Zeitschrift für angewandte Mathematik und Physik(2022)
摘要
In this paper, we consider the low Mach number limit of the compressible Hookean elastodynamics in a bounded domain. Based on previous uniform existence and convergence results, we further study the convergence rates of the solutions. By combining time-average method and the energy estimates, we show that, as the Mach number ϵ goes to zero, the solutions of the compressible Hookean elastodynamics will converge to the solution of the limit system at the rate of O(ϵ ) when the initial data are ill-prepared. If the initial data are assumed to be well-prepared, the convergence rates can be improved to O(ϵ ^2) .
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关键词
Hookean elastodynamics, Mach number, Convergence rates, 35Q35, 76N10, 76M45
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