Accession Number:

ADA026460

Title:

A Comparison of Buffer Strip and Non-Buffer Strip Joint Designs

Descriptive Note:

Engineer's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

• Gill, James M.

Report Date:

1976-06-01

Pagination or Media Count:

166.0

Abstract:

Buffer strip and non-buffer strip bolted wing skin type joints made from NARMCO 5208T300 graphite-epoxy material were designed, and the excess bearing capacity and weight of these joints were calculated for a wide range of laminate compositions, bolt hole sizes, and number of bolt holes. Design load conditions representative of an advanced fighter type aircraft were chosen. Joint designs were arbitrarily restrained by assumed manufacturing conditions, assumed interface conditions, and imposed laminate composition restrictions. Charts were prepared from which relative joint efficiencies could be determined but no attempt was made to analyze the effect of the arbitrary design restrictions. The advantages and penalties for buffer strip design were discussed and recommendations for future studies were made.

Descriptors:

• *BOLTED JOINTS
• COMPOSITE MATERIALS
• COMPUTER PROGRAMS
• EPOXY LAMINATES
• FIGHTER AIRCRAFT
• FINITE ELEMENT ANALYSIS
• GRAPHITE
• LOADS(FORCES)
• SKIN(STRUCTURAL)
• STRESS ANALYSIS
• THESES
• WINGS

Subject Categories:

• Attack and Fighter Aircraft
• Couplers, Fasteners and Joints

Distribution Statement:

APPROVED FOR PUBLIC RELEASE