A Method of Determining Modal Data of a Nonuniform Beam with Effects of Shear Deformation and Rotary Inertia
Abstract
A recurrence solution including the secondary effects of rotary inertia and shear deformation on discontinuous nonuniform beamlike structures is presented for obtaining highly descriptive free-free natural mode data. Results of other studies are include to ascertain the significance of the secondary influences on the classical uniform beam. Numerical results are also included for the application of the method to a first-stage and fourth-stage configuration of a typical space research launch vehicle. The numerical results indicate that shear deformation is generally the prime contributor of the secondary effects on typical launch vehicle configurations, the major influences of the secondary effects are seen in reductions in natural frequencies and in changes to the mole slopes, mole moments, and mode shears.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1965
- Accession Number
- ADA397710
Entities
People
- Lessie D. Hunter
- Robert J. Guillotte
- Vernon L. Alley Jr.
Organizations
- National Aeronautics and Space Administration