Finite-element analysis and multibody dynamics issues in rotorcraft dynamic analysisThere is general agreement that the development of effective rotorcraft analysis software will require the use of modern computational mechanics methodologies, especially finite element analysis and multibody dynamics. This paper examines the analysis of rotorcraft dynamics from the perspective of these methodologies. First, a general discussion of rotorcraft analysis and modeling is presented. Then, a hierarchy of rotorcraft analyses is presented, ranging from simple to complex kinematics, where it is shown that in comprehensive rotorcraft software, finite element analysis must be augmented by multibody dynamics in order to properly analyze large motions of rotorcraft components. Finally, a review of multibody dynamics is presented to further familiarize the rotorcraft community with this technology.
Document ID
19920073662
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ruzicka, Gene C. (NASA Ames Research Center Moffett Field, CA, United States)
Ormiston, Robert A. (U.S. Army, Aviation Systems Command; NASA, Ames Research Center Moffett Field, CA, United States)