Conventional earthquake risk assessments use fragility and vulnerability models that are based on seismic demands from individual (mainshock) ground motions, implicitly assume a structure is intact before an hits. This study develops suite of more realistic state-dependent for wide range building taxonomies, leveraging state-of-the-art methods to account dynamic damage accumulation in structure...

This work addresses the lack of focus on verification and comparison existing fatigue damage accumulation life prediction models basis large well-documented experiment datasets. Sixty-four constant amplitude, 54 two-level block loading, 27 three-level loading valid experiments were performed in order to generate an open-access, high-quality dataset that can be used as a benchmark for models. In...

This paper examines the importance of load phase angle variations with respect to fatigue damage. The operating loads on a generic three bladed up-wind 1.5-MW wind turbine blade were analyzed over a range of operating conditions, and an aggregate probability distribution for the actual phase angles between the peak in-plane (lead-lag) and peak out-ofplane (flap) loads was determined. Using a fi...