Semi-Explicit Rate-Dependent Modeling of Damage Avoidance Steel Connections Using HF2V Damping Devices
A rate-dependent modeling technique is developed for moment resisting steel connections that utilize non-linear viscous dampers. First, a model of the Maxwell-type is developed that considers the non-linear viscous damper and connection flexibility for translational motion. This model is compared with experimental results at several input motion frequencies to validate the results. The model is then extended to represent an exterior steel beam-to-column connection using damage-avoidance design and non-linear viscous dampers. By including terms to represent structural member and connection flexibility, using appropriate geometric transformations the model can be formulated to give the overall lateral load-drift structural performance. Validation analysis shows good agreement between experimental observations and the model predictions.