FE simulation and experimental tests of high-strength structural bolts under tension

Ying Hu, Le Shen, Shidong Nie, Bo Yang, Wei Sha

    Research output: Contribution to journalArticle

    23 Citations (Scopus)
    2296 Downloads (Pure)

    Abstract


    Experimental tests have been completed for high-strength 8.8 bolts for studying their mechanical performance subjected to tensile loading. As observed from these tests, failure of structural bolts has been identified as in one of two ways: threads stripping and necking of the threaded portion of the bolt shank, which is possibly due to the degree of fit between internal and external threads. Following the experimental work, a numerical approach has been developed for demonstration of the tensile performance with proper consideration of tolerance class between bolts and nuts. The degree of fit between internal and external threads has been identified as a critical factor affecting failure mechanisms of high-strength structural bolts in tension, which is caused by the machining process. In addition, different constitutive material laws have been taken into account in the numerical simulation, demonstrating the entire failure mechanism for structural bolts with different tolerance classes in their threads. It is also observed that the bolt capacities are closely associated with their failure mechanisms.
    Original languageEnglish
    Pages (from-to)174-186
    Number of pages13
    JournalJournal of Constructional Steel Research
    Volume126
    Early online date21 Jul 2016
    DOIs
    Publication statusPublished - Nov 2016

    Keywords

    • Structural bolt
    • Numerical simulation
    • Tolerance class
    • High temperature

    Fingerprint Dive into the research topics of 'FE simulation and experimental tests of high-strength structural bolts under tension'. Together they form a unique fingerprint.

  • Cite this