A freestanding rigid block subjected to base excitation can exhibit complicated motion
described by five response modes: rest, pure rocking, pure sliding, combined sliding …

The time derivative of acceleration, termed jerk, represents a physical property reflected
through a sudden change of acceleration, and is expressed in m/s3. Since jerk is felt by …

The failure of glass fiber reinforced polymers (GFRP)–ultra-high performance concrete
(UHPC) hybrid beams originate from its mechanical mechanism transition, which is reflected …

Vertical ground motions may increase irregularity of sliding response, while the subsequent
impact on the sliding fragility of building contents is not clear. Moreover, seismic risk of …

This paper aims to investigate the effect of the deformability of a sliding layer on the sliding
displacement and acceleration response of structures subjected to harmonic and pulse …

This paper presents an experimental investigation on the seismic response of medical
equipment supported on wheels and/or casters. Two pieces of equipment were tested: a …

Freestanding objects have endured seismic damage during major historical earthquakes,
but their seismic performance is not fully understood yet. A steel frame was constructed with …

A freestanding rigid block subjected to earthquake excitation is a problem of significant
interest to the earthquake engineering community because it has many direct applications in …

Base isolation is accepted as the method of choice for mitigating the seismic risk of critical
facilities, including hospitals. However, while many studies have confirmed the effectiveness …

Unanchored equipment and contents (EC) in buildings are of primary concern during an
earthquake because not only can they contribute to substantial nonstructural losses but also …