Stability and Stabilization: Discontinuities and the Effect of Disturbances

Stability and Stabilization: Discontinuities and the Eeect of Disturbances

Rock Slope Stability Analysis Using Discrete Element Method

Rock slope stability depends very much on the strength features of the rock and the geometrical and strength characteristics of the discontinuities (e.g., roughness, wall strength and persistence). Since a rock mass is not a continuum, its behavior is dominated by such discontinuities as faults, joints and bedding planes. Also, Rock slope instability is a major hazard for human activities and o...

Effects of statistical distribution of joint trace length on the stability of tunnel excavated in jointed rock mass

The rock masses in a construction site of underground cavern are generally not continuous, due to the presence of discontinuities, such as bedding, joints, faults, and fractures. The performance of an underground cavern is principally ruled by the mechanical behaviors of the discontinuities in the vicinity of the cavern. During underground excavation, many surrounding rock failures have close r...

Design of A No-chatter Fractional Sliding Mode Control Approach for Stabilization of Non-Integer Chaotic ‎Systems‎

A nonlinear chattering-free sliding mode control method is designed to stabilize fractional chaotic systems with model uncertainties and external disturbances. The main feature of this controller is rapid convergence to equilibrium point, minimize chattering and resistance against uncertainties. The frequency distributed model is used to prove the stability of the controlled system based on dir...

The effect of core stability training on static and dynamic balance in older men

Purpose: Considering the increasing spread of elderly people and the importance of maintaining balance in the elderly as one of the factors preventing aging problems, this study investigated the effect of central stabilization exercises on elderly people's balance. Methods: 30 elderly men with an average age of 63.66  who were divided into two groups with high risk of falling and falling into ...