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• Multiobjective muffler shape optimization with hybrid acoustics modelling 

  Airaksinen, Tuomas; Heikkola, Erkki (Acoustical Society of America, 2011)

  This paper considers the combined use of a hybrid numerical method for the modeling of acoustic mufflers and a genetic algorithm for multiobjective optimization. The hybrid numerical method provides accurate modeling of ...

• Multiobjective muffler shape optimization with hybrid acoustics modelling 

  Airaksinen, Tuomas; Heikkola, Erkki (University of Jyväskylä, 2010)

  Shape optimization of a duct system with respect to sound transmission loss is considered. The objective of optimization is to maximize the sound transmission loss at multiple frequency ranges simultaneously by adjusting ...

• A damping preconditioner for time-harmonic wave equations in fluid and elastic material 

  Airaksinen, Tuomas; Pennanen, Anssi; Toivanen, Jari (Elsevier, 2009)

  A physical damping is considered as a preconditioning technique for acoustic and elastic wave scattering. The earlier preconditioners for the Helmholtz equation are generalized for elastic materials and three-dimensional ...

• Local control of sound in stochastic domains based on finite element models 

  Airaksinen, Tuomas; Heikkola, Erkki; Toivanen, Jari (World Scientific Publishing, 2011)

  A numerical method for optimizing the local control of sound in a stochastic domain is developed. A three-dimensional enclosed acoustic space, for example, a cabin with acoustic actuators in given locations is modeled ...

• Prospectives to tractor cabin design with computational acoustics tools 

  Mönkölä, Sanna; Airaksinen, Tuomas; Makkonen, Pekka; Tuovinen, Tero; Neittaanmäki, Pekka (European Consortium for Mathematics in Industry, 2011)

  Computational acoustical models allow automated optimization of tractor design with respect to acoustic properties, which could speed up significantly the design process of tractor cabin prototypes. This article gives ...