Fotios Kasolis

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"Weak material approximation of holes with traction-free boundaries" Access to the published version may require subscription. Abstract. Consider the solution of a boundary-value problem for steady linear elasticity in which the computational domain contains one or several holes with traction-free boundaries. The presence of holes in the material can be(More)
Consider the Helmholtz equation ∇ · α∇p + k 2 αp = 0 in a domain that contains a so-called hard scatterer. The scatterer is represented by the value α = , for 0 < 1, whereas α = 1 whenever the scatterer is absent. This scatterer model is often used for the purpose of design optimization and constitutes a fictitious domain approximation of a body(More)
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