Residual Strength Analyses Of Riveted Lap Splice Joints

Author : B. R. Seshadri
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.95/5 ( download)

DOWNLOAD NOW!

Download or read book Residual Strength Analyses of Riveted Lap-splice Joints written by B. R. Seshadri and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this paper was to analyze the crack-linkup behavior in riveted lap-splice joint panels with small multiple-site damage (MSD) cracks at several adjacent rivet holes. Analyses are based on the STAGS (STructural Analysis of General Shells) code with the critical crack-tip-opening angle (CTOA) fracture criterion. To account for high constraint around a crack front, the "plane strain core" option in STAGS was used. The importance of modelling rivet flexibility with fastener elements that accurately model load transfer across the joint is discussed. Fastener holes are not modeled but rivet connectivity is accounted for by attaching rivets to the sheet on one side of the cracks that simulated both the rivet diameter and MSD cracks. Residual strength analyses made on 2024-T3 alloy (1.6-mm thick) riveted lap-splice joints with a lead crack and various size MSD cracks were compared with test data from Boeing Airplane Company. Analyses were conducted for both restrained and unrestrained buckling conditions. Comparison of results from these analyses and results from lap-splice-joint test panels, which were partially restrained against buckling indicate that the test results were bounded by the failure loads predicted by the analyses with restrained and unrestrained conditions.

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781723750908
Total Pages : 30 pages
Book Rating : 4.05/5 ( download)

DOWNLOAD NOW!

Download or read book Residual Strength Analyses of Riveted Lap-Splice Joints written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-17 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this paper was to analyze the crack-linkup behavior in riveted-stiffened lap-splice joint panels with small multiple-site damage (MSD) cracks at several adjacent rivet holes. Analyses are based on the STAGS (STructural Analysis of General Shells) code with the critical crack-tip-opening angle (CTOA) fracture criterion. To account for high constraint around a crack front, the "plane strain core" option in STAGS was used. The importance of modeling rivet flexibility with fastener elements that accurately model load transfer across the joint is discussed. Fastener holes are not modeled but rivet connectivity is accounted for by attaching rivets to the sheet on one side of the cracks that simulated both the rivet diameter and MSD cracks. Residual strength analyses made on 2024-T3 alloy (1.6-mm thick) riveted-lap-splice joints with a lead crack and various size MSD cracks were compared with test data from Boeing Airplane Company. Analyses were conducted for both restrained and unrestrained buckling conditions. Comparison of results from these analyses and results from lap-splice-joint test panels, which were partially restrained against buckling indicate that the test results were bounded by the failure loads predicted by the analyses with restrained and unrestrained conditions.Seshadri, B. R. and Newman, J. C., Jr.Langley Research CenterLAP JOINTS; RIVETED JOINTS; STRUCTURAL ANALYSIS; RIVETS; CRACKS; CRACK PROPAGATION; FRACTURING; HOLES (MECHANICS); RESIDUAL STRENGTH; COMPUTER PROGRAMS; CRACK TIPS; BUCKLING; ALUMINUM ALLOYS; DAMAGE; FAILURE; FASTENERS; LOADS (FORCES)

Author : B. R. Seshadri
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.28/5 ( download)

DOWNLOAD NOW!

Download or read book Residual Strength Analyses of Riveted Lap-splice Joints written by B. R. Seshadri and published by . This book was released on 2000 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this paper was to analyze the crack-linkup behavior in riveted lap-splice joint panels with small multiple-site damage (MSD) cracks at several adjacent rivet holes. Analyses are based on the STAGS (STructural Analysis of General Shells) code with the critical crack-tip-opening angle (CTOA) fracture criterion. To account for high constraint around a crack front, the "plane strain core" option in STAGS was used. The importance of modelling rivet flexibility with fastener elements that accurately model load transfer across the joint is discussed. Fastener holes are not modeled but rivet connectivity is accounted for by attaching rivets to the sheet on one side of the cracks that simulated both the rivet diameter and MSD cracks. Residual strength analyses made on 2024-T3 alloy (1.6-mm thick) riveted lap-splice joints with a lead crack and various size MSD cracks were compared with test data from Boeing Airplane Company. Analyses were conducted for both restrained and unrestrained buckling conditions. Comparison of results from these analyses and results from lap-splice-joint test panels, which were partially restrained against buckling indicate that the test results were bounded by the failure loads predicted by the analyses with restrained and unrestrained conditions.

Author : Gary R. Halford
Publisher : ASTM International
ISBN 13 : 0803128681
Total Pages : 551 pages
Book Rating : 4.82/5 ( download)

DOWNLOAD NOW!

Download or read book Fatique and Fracture Mechanics written by Gary R. Halford and published by ASTM International. This book was released on 2000 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Andrzej Skorupa
Publisher : Springer Science & Business Media
ISBN 13 : 9400742827
Total Pages : 346 pages
Book Rating : 4.26/5 ( download)

DOWNLOAD NOW!

Download or read book Riveted Lap Joints in Aircraft Fuselage written by Andrzej Skorupa and published by Springer Science & Business Media. This book was released on 2012-06-23 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue of the pressurized fuselages of transport aircraft is a significant problem all builders and users of aircraft have to cope with for reasons associated with assuring a sufficient lifetime and safety, and formulating adequate inspection procedures. These aspects are all addressed in various formal protocols for creating and maintaining airworthiness, including damage tolerance considerations. In most transport aircraft, fatigue occurs in lap joints, sometimes leading to circumstances that threaten safety in critical ways. The problem of fatigue of lap joints has been considerably enlarged by the goal of extending aircraft lifetimes. Fatigue of riveted lap joints between aluminium alloy sheets, typical of the pressurized aircraft fuselage, is the major topic of the present book. The richly illustrated and well-structured chapters treat subjects such as: structural design solutions and loading conditions for fuselage skin joints; relevance of laboratory test results for simple lap joint specimens to riveted joints in a real structure; effect of various production and design related variables on the riveted joint fatigue behaviour; analytical and experimental results on load transmission in mechanically fastened lap joints; theoretical and experimental analysis of secondary bending and its implications for riveted joint fatigue performance; nucleation and shape development of fatigue cracks in riveted longitudinal lap joints; overview of experimental investigations into the multi-site damage for full scale fuselage panels and riveted lap joint specimens; fatigue crack growth and fatigue life prediction methodology for riveted lap joints; residual strength predictions for riveted lap joints in a fuselage structure. The major issues of each chapter are recapitulated in the last section.

Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.67/5 ( download)

DOWNLOAD NOW!

Download or read book Methodology for Predicting the Onset of Widespread Fatigue Damage in Lap-Splice Joints written by and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : C. E. Harris
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.47/5 ( download)

DOWNLOAD NOW!

Download or read book A Practical Engineering Approach to Predicting Fatigue Crack Growth in Riveted Lap Joints written by C. E. Harris and published by . This book was released on 2000 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive experimental database has been assembled from very detailed teardown examinations of fatigue cracks found in rivet holes of fuselage structural components. Based on this experimental database, a comprehensive analysis methodology was developed to predict the onset of widespread fatigue damage in lap joints of fuselage structure. Several computer codes were developed with specialized capabilities to conduct the various analyses that make up the comprehensive methodology. Over the past several years, the authors have interrogated various aspects of the analysis methods to determine the degree of computational rigor required to produce numerical predictions with acceptable engineering accuracy. This study led to the formulation of a practical engineering approach to predicting fatigue crack growth in riveted lap joints. This paper describes the practical engineering approach and compares predictions with the results from several experimental studies.

Author :
Publisher :
ISBN 13 :
Total Pages : 936 pages
Book Rating : 4.01/5 ( download)

DOWNLOAD NOW!

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2000-07 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : 1004 pages
Book Rating : 4.54/5 ( download)

DOWNLOAD NOW!

Download or read book The First Joint DoD/FAA/NASA Conference on Aging Aircraft written by and published by . This book was released on 1998 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.40/5 ( download)

DOWNLOAD NOW!

Download or read book Government-Sponsored Programs on Structures Technology written by and published by . This book was released on 1997 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: