Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Experimental and Statistical Study of Failure Mechanisms of High-Strength Bolts in the Common Tensile Strength Test.

Document Type : Original Article

Authors
Ali Zardkouhi 1
Javad Katebi 2
Yousef Hosseinzadeh 3
Gholamreza Eftekhari 4
1 Ms.C of Eartquake Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran
2 Associate Professor, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran.
3 Professor, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran.
4 Ms.C of Structural Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran.
10.22065/jsce.2024.453553.3396
Abstract
The tensile strength of high strength bolts is determined by two common methods. In the first method, the tensile strength of the bolt is determined using a special device introduced in the ISO standard. In the second method, the tensile strength test of the bolt is performed using a nut. In bolts that were studied experimentally, two types of failure mechanisms are observed, bolt thread Stripping and bolt breakage in the reduced area of the thread. In this study, the tensile strength of the bolt has been tested by two common methods. The results of the present study and the statistical data collected from the mechanics of materials laboratories show that in the bolt tension test with the device introduced in the ISO standard, 96% of the test specimens are broken in the form of bolt breakage along the threaded length, while in the tensile test of the bolt with nut, only 10% of the specimens are broken by the bolt breakage mechanism along the threaded length. According to the frequency of failure mechanisms in both methods, it is found that the tensile strength of the bolt is determined in the bolt tensile test with the ISO device. When, in the bolt and nut tension test, it leads to the evaluation of the tensile strength of the bolt and nut set. Considering the compatibility of bolt and nut performance in steel structures, it is suggested to perform tensile test of bolt and nut, in addition to other tests. In this research, in addition to conducting experiments and collecting statistical data, numerical simulation in finite element software has been carried out to validate the mechanisms of bolt failure in both methods.
Keywords
Bolt Failure Mechanism
High Strength Bolt
Bolt Tension Test
Bolt Tensile Strength
Statistical Study
FE Model

Subjects

1.            Ahmadian, H. and H. Jalali, Identification of bolted lap joints parameters in assembled structures. Mechanical Systems and Signal Processing, 2007. 21(2): p. 1041-1050.
2.            Ibrahim, R.A. and C. Pettit, Uncertainties and dynamic problems of bolted joints and other fasteners. Journal of sound and Vibration, 2005. 279(3-5): p. 857-936.
3.            Omar, R., M.A. Rani, and M. Yunus, Representation of bolted joints in a structure using finite element modelling and model updating. Journal of Mechanical Engineering and Sciences, 2020. 14(3): p. 7141-7151.
4.            Zaman, I., et al. The effects of bolted joints on dynamic response of structures. in IOP Conference Series: Materials Science and Engineering. 2013. IOP Publishing.
5.            Sakai, T., Bolted joint engineering: fundamentals and applications. 2008: Beuth Verlag.
6.            ISO, E., 898-1: 2013; Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel—Part 1: Bolts, Screws and Studs with Specified Property Classes—Coarse Thread and Fine Pitch Thread. European Committee for Standardization: Brussels, Belgium, 2013.
7.            Davoodi, B. and M. Soleimani, Experimental study of changing of texture, Hardness and Strength of threads on tube made by thread rolling and Machining. JOURNAL OF MECHANICAL ENGINEERING, 2019. 49(1): p. 86.
8.            Hu, Y., et al., Performance of high strength structural bolts in tension: effects of tolerance classes. 2015.
9.            Kirby, B., The behaviour of high-strength grade 8.8 bolts in fire. Journal of Constructional Steel Research, 1995. 33(1-2): p. 3-38.
10.          Hu, Y., et al. Comparative study of the behaviour of BS 4190 and BS EN ISO 4014 bolts in fire. in Proceedings of 3rd international conference on steel and composite structures. 2007.
11.          Hu, Y., et al., FE simulation and experimental tests of high-strength structural bolts under tension. Journal of Constructional Steel Research, 2016. 126: p. 174-186.
12.          Grimsmo, E.L., et al., How placement of nut determines failure mode of bolt‐and‐nut assemblies. Steel Construction, 2017. 10(3): p. 241-247.
13.          Shaheen, M.A., et al. A numerical investigation into stripping failure of bolt assemblies at elevated temperatures. in Structures. 2020. Elsevier.
14.          Grimsmo, E.L., et al., An experimental study of static and dynamic behaviour of bolted end-plate joints of steel. International Journal of Impact Engineering, 2015. 85: p. 132-145.
15.          Plaitano, F., A. Stratan, and E. Nastri, Simplified modelling of failure in high strength bolts under combined tension and bending. Journal of Composites Science, 2022. 6(10): p. 302.
16.          Yang, F., M. Veljkovic, and Y. Liu, Fracture simulation of partially threaded bolts under tensile loading. Engineering structures, 2021. 226: p. 111373.
17.          Alipour Sajedi, S., M.R. Sheidaii, and Y. Hosseinzadeh, Analytical Model for Applying the Effect of Prying Force in the Design of Bolted Connections. Journal of Structural and Construction Engineering, 2022. 9(5): p. 39-57.
18.          Iran, P.a.B.O.o.I.R.o., Code of Connections in Steel Structures 2006, Plan and Budget Organization: Tehran.
19.          RCSC, Specification for structural joints using high-strength bolts. 2014, RCSC Chicago.
20.          Institution, B.S., ISO 3269, in Fasteners — Acceptance inspection. 2019, International Organization for Standardization: London, United Kingdom.
21.          ISO, E., 148–1 (2016) Metallic materials—Charpy pendulum impact test part 1: test method. ISO, Geneva, Switzerland, 2016.
22.          ISO, E., 898-2: 2013; Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel—Part 2: Nuts with specified property classes —Coarse thread and fine pitch thread. European Committee for Standardization: Brussels, Belgium, 2013. 
23.         ABAQUS, U. S. M. (2013). Version 6.13, Dassault Systémes Simulia Corp. Provi

  • Receive Date 03 May 2024
  • Revise Date 21 August 2024
  • Accept Date 17 September 2024