Accession Number:

AD0883980

Title:

Analysis and Full-Scale Testing of an Aircraft Shelter

Descriptive Note:

Technical rept. Jul 1968-Oct 1970

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY

Personal Author(s):

• Smith, Jimmy H.

Report Date:

1971-04-01

Pagination or Media Count:

181.0

Abstract:

The objective of this research was to determine the response of a semicircular orthotropic steel shell aircraft shelter when subjected to symmetric and unsymmetric static load conditions. A numerical technique is presented which is capable of treating the problems of nonlinear material properties, nonlinear geometry, flexure and axial compression, and the orthotropic nature of the structure. Basically, a mathematical model is developed which exhibits the same characteristics moment-rotation, load- deformation, and ultimate strength as a finite portion of the actual structure. This information is then used as input to a digital computer program for proper assembly of the stiffness coefficients and subsequent solution. The method of analysis is based on a differential approach to the basic displacement method, and a fourth-order Runge-Kutta integration technique is employed to integrate the differential equations. To verify the analysis, 22 tests were conducted on a full-scale structure which compared favorably to the numerical analysis.

Descriptors:

• *SHELTERS
• *AIRCRAFT
• HANGARS
• STRUCTURAL PROPERTIES
• LOADS(FORCES)
• PANELS
• UNDERGROUND STRUCTURES
• COMPUTER PROGRAMS
• NUMERICAL ANALYSIS
• DEFLECTION
• SHELLS(STRUCTURAL FORMS)
• PROTECTION
• MATHEMATICAL MODELS
• DEFORMATION

Subject Categories:

• Terminal Flight Facilities
• Structural Engineering and Building Technology
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE