Design of dynamically loaded fiber-reinforced structures with account of their vibro-acoustic behavior

Dynamically loaded structures for-high-technology applications generally re quire high material damping combined with low construction weight and adequ ate stress. Advanced lightweight structures will bare to meet not only thes e dynamic demands but also improved acoustic (low noise) standards. High pe rformance materials like magnesium, aluminum, or titanium, which are mainly used it: today's lightweight applications, reach their limits with respect to these dynamic and especially vibro-acoustic requirements. Then offer a high specific stress arid strength, but a relatively low damping, which lea ds to intense acoustic radiation. Therefore, composites or compound materia ls with a dynamically and vitro-acoustically optimized property profile are needed. The structural dynamic and vibro-acoustic behavior of these types of lightweight structures cannot be described by the use of classical model s. here, the advanced methods developed at ILK are considered, which take i nto account the special mechanical properties of the fiber-matrix compound. Also, sophisticated numerical simulation techniques such as the finite and the boundary element method are successfully applied.