Accession Number:

AD0711383

Title:

PARAMETRIC STUDY OF NATURAL FREQUENCIES OF SKIN-STRINGER STRUCTURE.

Descriptive Note:

Technical rept.,

Corporate Author:

DAYTON UNIV OHIO RESEARCH INST

Personal Author(s):

• McDaniel,T. J.

Report Date:

1970-07-01

Pagination or Media Count:

90.0

Abstract:

The results of a parametric study of the natural frequencies of a row of skin-stringer structures are contained in this report. Typical aircraft structures with hat-section, Z-section, or milled stringers were considered. The effect on the natural frequencies of parametric variation of stringer spacing, distance between frames, thickness of the covering skin, and material properties of the structure are tabulated. These results were obtained from a delta-matrix procedure which is developed from a transfer matrix analysis of the skin-stringer structure. Improvements in the transfer matrix analysis of the structure are also developed. Author

Descriptors:

• (*AIRFRAMES
• VIBRATION)
• STRUCTURAL MEMBERS
• BEAMS(STRUCTURAL)
• REINFORCING MATERIALS
• CONFIGURATION
• RESONANT FREQUENCY
• DAMPING
• MATRICES(MATHEMATICS)
• EQUATIONS OF MOTION
• MATHEMATICAL ANALYSIS

Subject Categories:

• Aircraft
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE