Efficient bolted joint modeling for industrial applications - Empirical and analytical approaches

Bolted joint modeling is a challenge that connects research to industrial applications. Past research has produced various analytical solutions for a bolt's effect on the response of a structure. A common industrial approach to the finite element method (FEM) solution is to couple the nodal displacement of a joint's opposing interfaces. This approach can be combined with empirical studies investigating the pressure cone diameter found in typical assemblies. At this point, an adaption of the modeling approach can be appropriate. The greatest challenge might be to find an acceptable trade-off between accuracy and applicational effort while maintaining a strong connection to the real physical effects. This paper aims to create awareness for the modeling uncertainties regarding bolted joint models for industrial use and to evaluate options that make model application more efficient. The application of completed empirical research to industrial models is investigated. A current industrial model is reviewed and compared to a new empirical-analytical model.