نتایج جستجو برای: rotational failure
تعداد نتایج: 402049 فیلتر نتایج به سال:
The question of whether mesospheric OH(υ) rotational population distributions are in equilibrium with the local kinetic temperature has been debated over several decades. Despite several indications for the existence of non-equilibrium effects, the general consensus has been that emissions originating from low rotational levels are thermalized. Sky spectra simultaneously observing several vibra...
Here we study the rotational structure of CF4 molecule for ground state n 4 mode, fine structure step by using J. Moret-Bailly theory. First the calculated spectra are normalized to the experimentally measured spectra, for calculating the centrifugal and coriolis constants up to the third approximation, D =-3.18 ´ 10-3 cm-1, (4) x = 1.33 ´ 10-1 cm-1. Then the rotational energies are calcula...
Tubed-reinforced-concrete columns are gaining increasing usage in engineering practices, whereas research on their fire behaviour is still limited and mainly concentrated unrestrained columns. Since end-restrained might behave differently as compared to the columns, of square tubed-reinforced-concrete with end restraints was investigated via numerical modelling this study. The axial rotational ...
In this paper, exact solution for two-plane transverse vibration analysis of axial-loaded multi-step Timoshenko rotor carrying concentrated masses is presented. Each attached element is considered to have both translational and rotational inertia. Forward and backward frequencies and corresponding modes are obtained using transfer matrix method (TMM). The effect of the angular velocity of spin,...
Small disk drives are inherently designed for portable applications and thus must be able to reject external shock and vibration. This paper expands on previous efforts at using the signal from a rotational accelerometer to minimize the the effects of these disturbances by dealing with several issues that come up: accelerometer beam resonances, low sample rate of the embedded servo on the disk ...
The phenomenon of clustering in light nuclei is one of the interesting topics while its study is difficult. In this article, a simple model (the two-particle model which includes a core and a cluster) is presented for the investigation of the positive and the negative parity of rotational bands of 20Ne isotope. The Deng-Fan and the Hellman potentials are considered as the core and the cluster p...
Magnetic abrasive finishing (MAF) is a micromachining process that uses magnetic field and magnetic abrasive particles to conduct the mechanism of material removal in micro-nanometer scales. In this paper, by an experimental method and statistical analysis, the effects of parameters like working gap, work-piece rotational speed and material removal mechanism (injection of abrasive slurry of Al<...
We have assessed the influence of isolated and combined rotational malunion of the radius and ulna on the rotation of the forearm. Osteotomies were made in both the radius and the ulna at the mid-diaphyseal level of five cadaver forearms and stabilised with intramedullary metal implants. Malunion about the axis of the respective forearm bone was produced at intervals of 10 degrees. The ranges o...
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