Purpose: The goal of this work is to reduce the effect dynamic loads on mine timbering through use elastic devices contained in monorail suspension and justify their parameters. Methods materials: article considers developed mathematical model vertical oscillations track, which allows setting interconnection between rolling stock parameters suspension. At under harmonic disturbing force caused ...

BACKGROUND Footwear worn indoors is generally less supportive than outdoor footwear and may increase the risk of falls. OBJECTIVE To evaluate balance ability and gait patterns in older women while wearing different styles of indoor footwear: a backless slipper and an enclosed slipper designed to optimise balance. METHODS Older women (n = 30) aged 65-83 years (mean 74.4, SD 5.6) performed a ...

investigations on vibration behaviors of railway track systems were attempted in this research. this was made by conducting a comprehensive field investigation into the free vibration of track systems and response of tracks to train moving loads. in-situ modal analysis was used in a railway track field as an efficient method of investigating dynamic properties of railway track systems. natural ...

The effect of the inertia term on longitudinal displacements an underground pipeline is shown for various cases pipe fastening when a seismic wave propagates along its axis. problem solved by analytical and numerical methods. pipe-soil interaction assumed to be elastic (shear stress generated in soil proportional relative displacement between soil).

A semi-analytical algorithm is developed for simulating flows with the velocity gradient uniformly of real Schur form. Computations both decaying and driven cases are performed, exhibiting basic results general conception testing specific notion `helicity fastening flows', and, creating Jiu-Gong/Ba-Gua (ditetragonal/octagonal) pattern cyclones resembling northern circumpolar cluster Jupiter.