利用预应力产生反平面弹性波的有限隐层
Employing pre-stress to generate finite cloaks for antiplane elastic waves
摘要：
结果表明，非线性弹性预应力的neo-Hookean超弹性材料可以被用来作为一种机制，以产生有限的斗篷，从而使物体接近不可见的传入反平面弹性波。在这种情况下，这种方法似乎否定了对具有非均匀和各向异性材料特性的特殊隐身超材料的要求。这些性质是由于预应力而自然产生的。这似乎提供了一种宽带隐身的机制，因为由于超材料微结构的色散效应将不会出现。
英文摘要：
It is shown that nonlinear elastic pre-stress of neo-Hookean hyperelastic materials can be used as a mechanism to generate finite cloaks and thus render objects near-invisible to incoming antiplane elastic waves. This approach appears to negate the requirement for special cloaking metamaterials with inhomogeneous and anisotropic material properties in this case. These properties are induced naturally by virtue of the pre-stress. This appears to provide a mechanism for broadband cloaking since dispersive effects due to metamaterial microstructure will not arise.
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