The ability to perform rolling contact fatigue (RCF) experiments in wheel–rail material is provided by a new small–scale test rig, manifesting the actual dynamic behaviour of the railway system. In this paper, a multi-body dynamics (MBD) model is proposed, simulating the vibration behaviour of the prescribed rig. The new testing facility is modelled using a three-dimensional model of the vehicl...

Problem statement: A common way to define and measure coupling is through structural properties and static code analysis. However, because of polymorphism, dynamic binding and the common presence of unused code in commercial software, the resulting coupling measures are imprecise as they do not perfectly reflect the actual coupling taking place among classes at run-time. For example, when using...

Increasing the signal-to-noise ratio in dynamic atomic force microscopy plays a key role nanomechanical mapping of materials with resolution. In this work, we develop an experimental procedure for increasing sensitivity higher harmonics atomic-force-microscope cantilever without modifying geometry but instead by utilizing dynamical mode coupling between its flexural modes vibration. We perform ...

The synthesis, structure, magnetic properties and structure of two molecular chiral magnets one inorganic magnet are presented. In crystals belonging to the Sohncke group, which includes non-collinear spin is achieved through Dzyaloshinsky-Moriya interactions in addition usual exchange dipole-dipole interactions. Experimentally, a helical (CHM) observed as ground state most this category uniaxi...

In recent years, researchers have been dedicated to the study of underactuated manipulators which have more joints than control actuators. In previous works, one always assumes that there is enough dynamic coupling between the active and the passive joints of the manipulator, for it to be possible to control the position of the passive joints via the dynamic coupling. In this work, the authors ...

a mobile manipulator robot is known as a complex system due to some properties such as coupling between the manipulator and mobile chassis, holonomic and nonholonomic constraints, multivariable and nonlinear dynamics. the control of robot faces the external disturbance, parametric uncertainty and unmodeled dynamics. therefore, the use of an adaptive fuzzy system is suggested for its capability ...