Method of Calculating Meta Meterial Characteristics for Cloaking for Acoustic Waves

摘要

A method for shielding a sound wave according to an embodiment of the present invention is a method for computing a meta-material characteristic for shielding a sound wave according to an embodiment of the present invention includes: in the cylindrical coordinate system (bipolar cylindrical coordinates), the _{σ 2 ≤σ≤σ 1} ∪ {2π} -σ 1 ≤σ≤2π-σ 2} to the meta-material disposed in an _{area, σ 1 σ 2π-} σ 1 A method for computing a metamaterial property for shielding a sound wave of an arranged object, the method comprising the steps of: receiving an internal ellipse value σ ₁ and an external ellipse value σ ₂ with respect to half of a length of an object to be shielded; Is calculated by using the relational expression ρ _σ = (σ ₂ -π) / (σ ₂ -σ ₁ ) and ρ _τ = (σ ₂ -σ ₁ ) / (σ ₂ -σ ₁ ) and a step of calculating the _σ and ρ _τ.