PSI - Issue 42

Fatih Kocatürk et al. / Procedia Structural Integrity 42 (2022) 1206–1214 Author name / Structural Integrity Procedia 00 (2019) 000 – 000 In addition to value, the values from analytical model and experimental studies were also compared. Since the values were obtained experimentally after the tested bolts were fractured, the values would ensure the FC specified during the analytical model was correct. The values with respect to fracture load was presented in Fig. 6. The critical value was obtained as 1.94 mm, which was 4.0% safer compared to 2.02 mm of analytical model result. Therefore, the FC specified during the derivation of the analytical model was correct. 1213 8

Fig. 6. Experimental fracture load obtained for different values. The critical value was obtained as 1.94 mm. 5. Conclusions In this study, the analytical formulation, that estimates the MSD for bolts with a SHD less than the SOD, was validated by conducting experimental studies. The residual floor thickness, , estimated by the analytical formulation was 3.2% more secure compared to the experimental studies that revealed the value as 2.73 mm. Therefore, it was validated that the developed analytical formulation would be used to estimate the MSD for bolts with a SHD less than the SOD. As a result, the MSD of the investigated bolt type that satisfies the minimum UTS defined in ISO 898-1 (2004) and provides the maximum weight reduction can be estimated using the experimentally validated analytical formulation. References Benac, D.J., 2007. Technical Brief: Avoiding Bolt Failures. Journal of Failure Analysis and Prevention 7, 79 – 80. Bickford, J., 1998. Handbook of Bolts and Bolted Joints, 1st ed, Handbook of Bolts and Bolted Joints. CRC Press, Boca Raton. Burguete, R.L., Patterson, E.A., 1995. The Effect Of Eccentric Loading On The Stress Distribution In Thread Roots. Fatigue & Fracture of Engineering Materials & Structures 18, 1333 – 1341. Dang Hoang, T., Herbelot, C., Imad, A., Benseddiq, N., 2013. Numerical modelling for prediction of ductile fracture of bolted structure under tension shear loading. Finite Elements in Analysis and Design 67, 56 – 65. ECS Steyr, 2007. FemFat 4.7: Theory Manual. St. Valentin. Eichlseder, W., 1989. Rechnerische Lebensdaueranalyse von Nutzfahrzeugkomponenten mit der FE methode. TU Graz. Fares, Y., Chaussumier, M., Daidie, A., Guillot, J., 2006. Determining the life cycle of bolts using a local approach and the Dang Van criterion. Fatigue & Fracture of Engineering Materials & Structures 29, 588 – 596 Forschungskuratorium Maschinenbau (FKM), 2003. Analytical strength assessment of components in mechanical engineering, 5th Ed. Fransplass, H., Langseth, M., Hopperstad, O.S., 2015. Experimental and numerical study of threaded steel fasteners under combined tension and shear at elevated loading rates. International Journal of Impact Engineering 76, 118 – 125. Fransplass, H., Langseth, M., Hopperstad, O.S., 2011. Tensile behaviour of threaded steel fasteners at elevated rates of strain. International Journal of Mechanical Sciences 53, 946 – 957. GDR Standard, 1983. TGL 19340: Dauerfestigkeit der Maschinenbauteile. Berlin: GDR State Publisher. Grimsmo, E.L., Aalberg, A., Langseth, M., Clausen, A.H., 2016. Failure modes of bolt and nut assemblies under tensile loading. Journal of Constructional Steel Research 126, 15 – 25.