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Record Details

Record 16 of 5177
Beam stresses induced by a turbulent boundary layer and simulated with a reverberant acoustic field
Author and Affiliation:
Schutzenhofer, L. A.(NASA Marshall Space Flight Center, Systems Dynamics Laboratory, Huntsville, Ala., United States)
Abstract: Unsteady pressure fluctuations are a feature of the flow field of an airplane or a space vehicle in atmospheric flight. Undesirable effects of these fluctuations range from internal (cabin) noise to structural fatigue and damage of avionic and ordnance systems. The integrity to withstand these fluctuating loads is established through reverberant room acoustical qualification testing. The purpose of this paper is to develop a methodology of simulating turbulent boundary layer fluctuating pressure loading for a simply supported beam with a reverberant acoustic field. This goal was accomplished using normal mode vibration analysis. The main results were developed in terms of dimensionless quantities such as turbulent boundary layer spectrums, reverberant acoustical field simulation spectrums, and stress response spectrums with parameters: dimensionless fundamental frequency, Mach number, and relative boundary layer displacement thickness.
Publication Date: Jan 01, 1981
Document ID:
19810045082
(Acquired Nov 30, 1995)
Accession Number: 81A29486
Subject Category: FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number: AIAA PAPER 81-0629
Document Type: Conference Proceedings
Publication Information: (SEE A81-29428 12-01)
Publisher Information: United States
Meeting Information: Conference on Structures, Structural Dynamics and Materials; 22nd; April 6-8, 1981; Atlanta, GA
Financial Sponsor: NASA; United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BEAMS (SUPPORTS); FLIGHT CHARACTERISTICS; PRESSURE OSCILLATIONS; STRESS ANALYSIS; TURBULENT BOUNDARY LAYER; ACOUSTIC PROPERTIES; FREQUENCY RESPONSE; POWER SPECTRA; REVERBERATION; VIBRATION MODE
Imprint And Other Notes: In: Structures, Structural Dynamics and Materials Conference, 22nd, Atlanta, Ga., April 6-8, 1981, and AIAA Dynamics Specialists Conference, Atlanta, Ga., April 9, 10, 1981, Technical Papers. Part 2. (A81-29428 12-01) New York, American Institute of Aeronautics and Astronautics, Inc., 1981, p. 547-558.
Availability Source: Other Sources
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