This paper provides a simplified tool for preliminary seismic assessment of the out-of-plane behavior non-structural walls, such as unreinforced masonry partition based on non-linear time-history analyses. The studies are performed using equivalent single-degree-of-freedom systems and trilinear hysteretic models. stability is investigated through statistical computed displacement demand related...

Introduction To understand the impact of respiratory mechanics during mechanical ventilation, it is helpful to partition between the lungs and the chest wall. Esophageal pressure (Pes) is used to calculate chest wall compliance. However, esophageal pressure is not always used in the clinical arena. The value of chest wall compliance has been proposed to be estimated using 4% of the predicted va...


 In the process of metro station construction, partition wall is usually used to prevent displacement soil behind ensure construction platform. This research aims analyze response keep safety structure. The time-horizontal and cracks are measured during construction. finite element software FLAC 3D simulate wall, reasons cracking analyzed by simulation measurement data. stiffness self-sta...

the present research is concerned with the determination of ductility, over-strength and response modification factors of coupled steel shear wall frames. three structural models with various numbers of stories, bay width and coupling beam height were analyzed using static pushover and incremental nonlinear dynamic analyses. the ductility, over-strength and response modification factors for the...

A closed cylindrical pipe with an inner partition wall forms two one-dimensional cavities. These each exhibit acoustic modes at certain well-defined frequencies. partial transmission through the leads to interactions between cavities' modes, and hence avoided crossings modes' This system is analogous a quantum that has multi-level interacting sub-systems and, thus, exhibits multiple crossings. ...