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Load sharing in single-lap bonded/bolted composite joints. Part II: Global sensitivity analysis.

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Title: Load sharing in single-lap bonded/bolted composite joints. Part II: Global sensitivity analysis.
Authors: Bodjona, Kobyé1 kobye.bodjona@mail.mcgill.ca, Lessard, Larry1
Source: Composite Structures. Oct2015, Vol. 129, p276-283. 8p.
Subjects: Mechanical loads, Composite materials, Joints (Engineering), Sensitivity analysis, Chemical bonds, Bolted joints
Abstract: Bonded/bolted joints in composites are potentially stronger and more durable than the underlying bonded and bolted joints separately. While recent experimental work has revealed that the most significant “across-the-board” improvements (compared to both constituent joints) are obtained when there is substantial load sharing between the adhesive and bolts, there is currently limited understanding of how load sharing works and how it can most effectively be achieved. In order to answer this question, this work presents an extensive global sensitivity analysis of a computational model of a single-bolt, single-lap composite joint containing an elastic–plastic adhesive. This model was previously developed and validated in part I of the paper. The objective of the sensitivity analysis was to quantify the relative importance of the different joint design parameters (factors) in load sharing. It was determined that adhesive yield strength is singularly the most important factor, by between 2 and 9 times depending on the level of load applied to the joint. The joint E / D ratio, adhesive hardening slope and adhesive thickness were found to be other significant factors influencing load sharing. For designs in which the adhesive overlap did not fully plasticise, no significant proportion (⩽10%) of the applied load was found to be transferred to the bolt. [ABSTRACT FROM AUTHOR]
Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Load sharing in single-lap bonded/bolted composite joints. Part II: Global sensitivity analysis.
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  Data: Bonded/bolted joints in composites are potentially stronger and more durable than the underlying bonded and bolted joints separately. While recent experimental work has revealed that the most significant “across-the-board” improvements (compared to both constituent joints) are obtained when there is substantial load sharing between the adhesive and bolts, there is currently limited understanding of how load sharing works and how it can most effectively be achieved. In order to answer this question, this work presents an extensive global sensitivity analysis of a computational model of a single-bolt, single-lap composite joint containing an elastic–plastic adhesive. This model was previously developed and validated in part I of the paper. The objective of the sensitivity analysis was to quantify the relative importance of the different joint design parameters (factors) in load sharing. It was determined that adhesive yield strength is singularly the most important factor, by between 2 and 9 times depending on the level of load applied to the joint. The joint E / D ratio, adhesive hardening slope and adhesive thickness were found to be other significant factors influencing load sharing. For designs in which the adhesive overlap did not fully plasticise, no significant proportion (⩽10%) of the applied load was found to be transferred to the bolt. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.compstruct.2015.03.069
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 276
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      – SubjectFull: Mechanical loads
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Joints (Engineering)
        Type: general
      – SubjectFull: Sensitivity analysis
        Type: general
      – SubjectFull: Chemical bonds
        Type: general
      – SubjectFull: Bolted joints
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      – TitleFull: Load sharing in single-lap bonded/bolted composite joints. Part II: Global sensitivity analysis.
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              Text: Oct2015
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