Residual strength analyses of stiffened and unstiffened panels––Part II: wide panels

Seshadri, Banavara R.; Newman, J. C.; Dawicke, D. S.

doi:10.1016/s0013-7944(02)00134-0

Cited by 27 publications

(13 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A, Measured and predicted crack extension in flat stiffened panel with a single lead crack . B, Measured and predicted crack extension in flat stiffened panel with a lead crack and MSD cracks…”

Section: Applicationsmentioning

confidence: 99%

Characterization of stable ductile crack propagation by CTOA: Review of theory and applications

Tyson¹,

Newman

Xu³

2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Fracture toughness is a crucial material property in structural design with metallic materials. For resistance against crack initiation, the crack‐tip opening displacement (CTOD) (or, equivalently, the J integral) is well established. For resistance against crack extension, the “resistance curve” (J as a function of crack size) may be used for limited amounts of crack growth. However, for crack increments much larger than the material thickness, the most useful criterion for toughness characterization is the crack‐tip opening angle (CTOA). During the past three decades, standards have been introduced to enable reproducible measurement of CTOA. Simultaneously, improved computer‐aided photographic methods have been developed to measure surface CTOA during the fracture process, and analysis of the mechanics of bend specimens has enabled deduction of the CTOA from load and displacement. Elastic‐plastic finite‐element analyses using a constant‐CTOA fracture criterion have been used to simulate fracture of laboratory specimens and structural components and to transfer the properties measured from laboratory‐scale specimens to structural applications. This paper reviews the state of the art in measurement and application of CTOA.

show abstract

Section: Applicationsmentioning

confidence: 99%

Characterization of stable ductile crack propagation by CTOA: Review of theory and applications

Tyson¹,

Newman

Xu³

2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…[115][116][117][118]), applications of the cohesive model, frequently combined with investigations of the CTOA concept are found in [71] in this issue and elsewhere (e.g. [74,113,114,119]).…”

Section: Application Of the Ctoa Cohesive Zone And Damage Model Apprmentioning

confidence: 99%

Fracture and damage mechanics modelling of thin-walled structures – An overview

Zerbst¹,

Heinimann

Donne³

et al. 2009

Engineering Fracture Mechanics

View full text Add to dashboard Cite

“…In addition, a significant amount of scatter (±1 deg) is always present in the experimental measurements. 8,12,19,20,25 Numerical simulation of test specimens is usually used to determine a critical CTOA value that fits the residual strength and crack growth observed in testing. 8,[11][12][13]21,25,26 Such finite element simulations usually result in estimated CTOA values different than the experimentally measured values but within the scatter band.…”

Section: Critical Ctoa (ψ C ) Valuementioning

confidence: 99%

“…8,12,19,20,25 Numerical simulation of test specimens is usually used to determine a critical CTOA value that fits the residual strength and crack growth observed in testing. 8,[11][12][13]21,25,26 Such finite element simulations usually result in estimated CTOA values different than the experimentally measured values but within the scatter band. 8,11,12 Sutton et al 20 reported an experimentally measured value of c = 4.7 deg for 2024-T3 aluminum in the T-L grain direction.…”

Section: Critical Ctoa (ψ C ) Valuementioning

confidence: 99%

“…8,[11][12][13]21,25,26 Such finite element simulations usually result in estimated CTOA values different than the experimentally measured values but within the scatter band. 8,11,12 Sutton et al 20 reported an experimentally measured value of c = 4.7 deg for 2024-T3 aluminum in the T-L grain direction. This value was first used for nine of the crack configurations and was found to cause the analysis to overpredict the test results.…”

Section: Critical Ctoa (ψ C ) Valuementioning

confidence: 99%

See 1 more Smart Citation

Comparison of Residual Strength Estimates for Bolted Lap-Joint Panels

Hijazi

Lacy

Smith

2004

Journal of Aircraft

View full text Add to dashboard Cite

Fracture analysis of cracks along mechanically fastened joints is a central issue in the damage tolerance assessment of semimonoque aircraft structures. Nonlinear elastic-plastic finite element analysis, employing the cracktip-opening-angle criterion, was used to evaluate residual strength of bolted lap-joint 2024-T3 aluminum panels with multiple site damage subjected to Mode-I loading. A total of 36 different crack configurations were analyzed and compared to the experimental results. The effect of different aspects of the finite element modeling procedure on the accuracy of the residual strength predictions was investigated. Modeling of the geometric details of the test panels, such as fasteners and antibuckling restraints, was found to have a considerable effect on the predicted residual strengths. The nonlinear analyses provided reasonable estimates of the residual strength. The numerical results were compared with residual strength predictions obtained from a semi-empirical link-up model. Both approaches were comparable in terms of accuracy when compared to the test data.

show abstract

Residual strength analyses of stiffened and unstiffened panels––Part II: wide panels

Cited by 27 publications

References 10 publications

Characterization of stable ductile crack propagation by CTOA: Review of theory and applications

Characterization of stable ductile crack propagation by CTOA: Review of theory and applications

Fracture and damage mechanics modelling of thin-walled structures – An overview

Comparison of Residual Strength Estimates for Bolted Lap-Joint Panels

Contact Info

Product

Resources

About