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A Model for Prediction of Failure Initiation and Load Resistance Behavior in Finite Element Analyses of Connections with Welds and Bolts in Combination

Soni, Divyang
http://orcid.org/0000-0002-0533-9834
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627661699634031

Abstract Details

2021, MS, University of Cincinnati, Engineering and Applied Science: Civil Engineering.
Situations such as repair and strengthening of existing structures sometimes make it unavoidable to use connections with both welds and bolts. These combined connections behave differently from only bolted or welded connections and it is known that adding the strengths of individual components of a combined connection does not equal its ultimate strength [Manuel and Kulak (2000)]. This can be attributed to differences in ductility and load resistance mechanisms of welds and bolts. The AISC specifications give some instructions on designing combined connections, which specify lower limits on strengths of welds and bolts in a combined connection, but this process of design does not take into account the bearing force in the bolts, leading to a very uneconomical design. The use of finite element analyses can be helpful in simulating combined connections under a variety of loads. The results can be helpful in examining the mode of failure and the contribution of bolts and welds in load-resistance at different stages of loading. Although previous research [Jiansuo et al. (2014); Shi et al. (2011a)] has delved in this area, the knowledge of failure initiation in combined connections remains very limited and questions about intricate details of modeling finite element analyses of combined connections remain unanswered. The objectives of this thesis were to prepare the foundations for modeling combined connections for finite element analysis and to use that knowledge to study the behavior of combined connections under a tensile load. For this it was essential to understand the details of the different modeling options available in ABAQUS along with the theoretical fundamentals of finite elements. It was also essential that the developed modeling approach be verified by comparing the results to experimental data available on this topic.
Gian Andrea Rassati, Ph.D. (Committee Chair)
Thomas Burns, Ph.D. (Committee Member)
James Swanson, Ph.D. (Committee Member)
112 p.
Civil Engineering
combined connections; steel connections; finite element modeling; welds and bolts; failure initiation

Recommended Citations

Citations

  • Soni, D. (2021). A Model for Prediction of Failure Initiation and Load Resistance Behavior in Finite Element Analyses of Connections with Welds and Bolts in Combination [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627661699634031

    APA Style (7th edition)

  • Soni, Divyang. A Model for Prediction of Failure Initiation and Load Resistance Behavior in Finite Element Analyses of Connections with Welds and Bolts in Combination. 2021. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627661699634031.

    MLA Style (8th edition)

  • Soni, Divyang. "A Model for Prediction of Failure Initiation and Load Resistance Behavior in Finite Element Analyses of Connections with Welds and Bolts in Combination." Master's thesis, University of Cincinnati, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627661699634031

    Chicago Manual of Style (17th edition)

ucin1627661699634031
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This open access ETD is published by University of Cincinnati and OhioLINK.