Sponsor:
NASA Langley Research Center

Collaborator:
Calvin College

An innovative, accurate and efficient Hybrid Element Method (HEM) is developed for mid frequency vibroacoustic analysis of non-uniform aerospace structures including metallic/composite configurations. The development is based on the concept that by using transcendental functions based on the exact (or near exact) solutions of free wave equations and statistical phase function as interpolation functions, the mid frequency problems can be resolved using finite element models. When combined with low and high frequency analysis tools, this offers a unified framework for the full frequency spectrum, vibroacoustic analysis of aerospace systems accurately and efficiently using the same finite element database.