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摘要


We extendthe study on the homogenization problem for an elastic material containing a distributed array of gas bubbles to the case when the body force depends on time. By technically constructing an approximating sequence, we are able to show the convergence of semigroups andtherefore prove the main result that such spongy material can be approximatedby an elastic material without holes in the elastodynamics with the force term depending on time.

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