Nonlinear modeling of structures with bolted joints: A comparison of two approaches based on a time-domain and frequency-domain solver

摘要: Abstract Motivated by the current demands in high-performance structural analysis, and a need to better model systems with localized nonlinearities, analysts have developed number of different approaches for modeling simulating dynamics bolted-joint structure. However, it is still unclear which approach might be most effective given system or set conditions. To grasp their similarities differences, this paper presents numerical benchmark that assesses how well two diametrically differing joint – time-domain whole-joint frequency-domain node-to-node predict simulate mechanical joint. These were applied Brake-Reus beam, prismatic structure comprised beams bolted interface. The validated first updating models reproduce nonlinear response bending mode an experimental beam. Afterwards, tuned evaluated on ability nonlinearity dynamic second third modes. results show perform about equally as In addition, exposition highlights improvements made each method during course work reveal further challenges advancing state-of-the-art.