Tuned Damper Models

An inerter is a passive vibration control device, where the force is proportional to relative acceleration, i.e., $latex F = b(\ddot{u}_2-\ddot{u}_1)$. The inertance, b, has units of mass. While working on inerter models in OpenSees, I found a paper by Lazar et al (2013) in which tuned inerter dampers (TID) were calibrated to give similar … Continue reading Tuned Damper Models →

Inerters Everywhere

Vibration control devices based on relative acceleration, or inerters, are all the rage these days. So it's no surprise that inerter models are making their way into OpenSees. As far as I know, two inerter elements are available: InertiaTruss and Inerter. There has also been a third attempt at inerters, but via a material model. … Continue reading Inerters Everywhere →