Supercritical bending of a rod compressed by longitudinal force and having non-linearly elastic resistance to rotation its axis in hinged supports is considered. Hooke's law adopted for the material. The deflection presented as trigonometric series, which only first three terms are left. Through this row, angle inclination expressed. It chosen desired function, with respect resolving nonlinear ...

The present study is the first to analyze the dynamic response of a poroelastic beam subjected to a moving force. Moreover, the influences of attached mass-spring systems and non-ideal supports (with local movements in the supporting points or base due to the presence of factors such as gaps, unbalanced masses, and friction or seismic excitations) on the responses were investigated. Non-ideal s...

The orthopaedic surgeon should be familiar with various supports and braces for the treatment of low back pain. Severe cases of spinal instability always need a Hohmann overbridging brace, whereas the milder form of motion-segment instability is treated with one of the elastic supports. In cases of osteoporosis of the spine and insufficiency of the lumbosacral junction the Lindemann 2/3 semi-el...