NDLI: Adhesive-bonded scarf and stepped-lap joints

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Adhesive-bonded scarf and stepped-lap joints

Content Provider	NASA Technical Reports Server (NTRS)
Author	Hart-Smith, L. J.
Copyright Year	1973
Description	Continuum mechanics solutions are derived for the static load-carrying capacity of scarf and stepped-lap adhesive-bonded joints. The analyses account for adhesive plasticity and adherend stiffness imbalance and thermal mismatch. The scarf joint solutions include a simple algebraic formula which serves as a close lower bound, within a small fraction of a per cent of the true answer for most practical geometries and materials. Digital computer programs were developed and, for the stepped-lap joints, the critical adherend and adhesive stresses are computed for each step. The scarf joint solutions exhibit grossly different behavior from that for double-lap joints for long overlaps inasmuch as that the potential bond shear strength continues to increase with indefinitely long overlaps on the scarf joints. The stepped-lap joint solutions exhibit some characteristics of both the scarf and double-lap joints. The stepped-lap computer program handles arbitrary (different) step lengths and thickness and the solutions obtained have clarified potentially weak design details and the remedies. The program has been used effectively to optimize the joint proportions.
File Size	5261675
Page Count	115
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19740005084
Archival Resource Key	ark:/13960/t6tx83g36
Language	English
Publisher Date	1973-01-01
Access Restriction	Open
Subject Keyword	Machine Elements And Processes Digital Computers Composite Materials Adhesives Continuum Mechanics Adhesive Bonding Lap Joints Scarfing Computer Programs Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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