, Volume 38, Issue 6, pp 583-597
Date: 23 Sep 2008

Viscoelastic material design with negative stiffness components using topology optimization

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Abstract

An application of topology optimization to design viscoelastic composite materials with elastic moduli that soften with frequency is presented. The material is a two-phase composite whose first constituent is isotropic and viscoelastic while the other is an orthotropic material with negative stiffness but stable. A concept for this material based on a lumped parameter model is used. The performance of the topology optimization approach in this context is illustrated using three examples.