Numerical Simulations of Bolted Steel Connections in Single and Double Shear Under Pretension Effect

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Bekiroğlu S., Yılmaz O.

11th International Congress on Advances in Civil Engineering (ACE 2014), İstanbul, Turkey, 21 - 25 October 2014, pp.1-7

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1-7
  • Yıldız Technical University Affiliated: Yes


 This study presents implementation of numerical simulations on tension member connections with/without pretensioned bolts which are subjected to tension force aligned in direction of bolt line. Four groups and forty different models have been created. Half of these models have single shear and the others have double shear. First and second groups have single shear with one bolt line and two bolt lines, respectively, while third and fourth groups have double shear with one bolt line and two bolt lines, respectively. The number of bolts on the line in each group have been positioned with three, four, five, six, seven, respectively. High strength bolts are used and stress strain curves for all components in the models are taken as non-linear material. Contacts which provide interaction between components in the models are taken as linear or non-linear. Numerical simulations have been carried out by commercially available finite element software ANSYS. After analyzing the models, stressdeformation state of tension members, distribution of stresses between bolts for the models are successfully obtained and the obtained results are compared with each other. It is observed that, for the models without pretension effect, increasing number of bolts on a line causes increasing ratio of maximum stress value to minimum stress value and increasing number of bolts causes increasing displacement of tension member. Minimum stress values on bolts are usually observed on middle bolt of bolt line.
Keywords: Tension member, pretensioned bolt, finite element model, non-linear analysis, contact.