TY - JOUR AB - Accurate prediction of the vibration response of friction joints is of great importance when estimating both the performance and the life of build-up structures. The contact conditions at the joint interface, including local normal load distribution and contact stiffness, play a critical role in the nonlinear dynamic response. These parameters strongly depend on the mating surfaces, where the surface roughness is well known to have a significant impact on the contact conditions in the static case. In contrast, its effects on the global and local nonlinear dynamic response of a build-up structure is not as well understood due to the complexity of the involved mechanisms. To obtain a better understanding of the dependence of the nonlinear dynamic response on surface roughness, a newly proposed multiscale approach has been developed. It links the surface roughness to the contact pressure and contact stiffness, and in combination with a multiharmonic balance solver, allows to compute the nonlinear dynamic response for different interface roughness. An application of the technique to a single bolted lap joint highlighted a strong impact of larger roughness values on the pressure distribution and local contact stiffness and in turn on the nonlinear dynamic response. AU - Armand,J AU - Salles,L AU - Schwingshackl,CW AU - Süß,D AU - Willner,K DO - 10.1016/j.euromechsol.2018.01.005 EP - 57 PY - 2018/// SN - 0997-7538 SP - 44 TI - On the effects of roughness on the nonlinear dynamics of a bolted joint: a multiscale analysis T2 - European Journal of Mechanics - A/Solids UR - http://dx.doi.org/10.1016/j.euromechsol.2018.01.005 UR - http://hdl.handle.net/10044/1/57638 VL - 70 ER -