In this paper, the modified Euler-Bernoulli beam model is presented to examine the influence of surface elasticity and residual surface tension on the critical force of axial buckling of nanotubes in the presence of rotary inertia. An explicit solution is derived for the buckling loads of microscaled Euler beams considering surface effects. The size-dependent buckling behavior of the nanotube d...

Elastic rings are common rotor supporting structure, which have been widely used in aeroengine support system. However, large inertia force and gyroscopic moment may occur during the operation of aeroengine, lead to contact between elastic ring bearing pedestal, then introduce variable stiffness into In this paper, a mathematical model is proposed subsequently verified by comparison with simula...

This study presents analysis of errors of calculations for engine load during vehicle acceleration phase, resulting from some simplifications or errors in selection of mass moment of inertia. A varied impact of the assumed, on unknown basis, values of the mass moments of inertia on calculation error was shown. According to the author, more accurate results of calculations of coefficient of rota...

Efficient motion estimation is central to observing and controlling dynamic legged locomotion. This paper considers a screw-theoretic (line-oriented) representation for this context and illustrates this on the attitude estimation subproblem. This is presented as part of an Extended Kalman Filter (EKF) based on inertial (gyroscopic) sensing in which each measurement axis is treated as an zeropit...

0019-1035/$ see front matter 2011 Published by doi:10.1016/j.icarus.2010.09.002 ⇑ Corresponding author. Address: MS 183-301, Jet Oak Grove Drive, Pasadena, CA 91109, USA. E-mail addresses: [email protected] (B.G. B Nimmo). We examine models of secular variations in the orbit and spin poles of Ceres and Vesta, the two most massive bodies in the main asteroid belt. If the spin poles are fu...

Again, these quantities will be more sensitive if the moments of inertia are close than if they are widely spaced. For a vehicle with nominal inertias satisfying I1 D 2I3 and I2 D 1:5I3, and the 1% normalized inertia perturbations considered earlier, arctan ° can vary from 31.8 to 38.7 deg, a total range of 6.9 deg. Using Eqs. (13) and (14) together allows the possible variations in absolute se...

The generalised deformed suq (2) model is applied to 79 superdeformed bands in the region A ∼ 190. The transition energies and the moments of inertia are calculated within the model, Its validity is investigated by comparing it with the experimental data. Both the standard suq (2) and the generalized one fail to account for the uprising and the downturn of the dynamic moment of inertia. Both mo...