By using the fixed points theorem of twist map, the author proves that the biomathematical model of muscular blood vessel: x+B+Ax+γx 3=E cos ωt has at least one 2π /ω periodic solution under condition: B/2<1 where A, B, γ, E, ω are positive constant.
The measured indices were statistically analyzed with alive individual whole information. Results: Length of the twisting segment of the lateral tibia surface was 12.9±0.41cm in male and 12.34±0.31cm in female.
In allusion to fatigue life of a tracked vehicle torsion bar, a virtual prototype model of the tracked vehicle suspension system including a flexible torsion bar was built based on dynamic simulation software-ADAMS.
Node force and stress results of the torsion bar from last step simulation were acquired; taking into account the material characteristics and influential factors, fatigue life of the flexible body of the torsion bar was predicted.
The torsion angle specifies the current state of the shaft and can be used for the advanced disengagement of the engine in the event of the breakup of the transmission.
It is shown that the suggested adaptive system of estimating the torsion angle of the shaft ensures a high dynamic accuracy in the stationary and nonstationary modes of operation of the engine.
A Torsion Balance for Studying Anisotropic Magnetic Properties of Superconducting Materials
Sensitivity analysis of torsional vibration behavior of the shafting of a turbo generator set to changes of its mechanical param
Aiming at a 300 MW turbo-generator model, the sensitivity of natural torsional frequencies and modes of torsional vibration (TV) to the rotational inertia and stiffness of the turbo-generator were analyzed.
A new semiactive lever-type tuned mass damper (TMD) with an adjustable frequency is proposed to control vertical bending buffeting and torsional buffeting and flutter in the whole velocity range of bridge decks.
An analytical method for calculating torsional constants for arbitrary complicated thin-walled cross-sections
In this paper, an analytical method is proposed for calculating torsional constants for complicated thin-walled cross-sections with arbitrary closed or open rib stiffeners.
At the same time, the CH2-amide bonds twist, and the all-trans conformation of methylene sequences is disordered by inserting the gauche conformation.
The variational problem of determining the optimal shape (camber and twist) of the midsurface of a wing having minimum wavedrag is examined in the linear formulation.
The possibility of using a cylindrical twist (camber) of the wing to provide the necessary longitudinal trim and to reduce drag at a given lift is analyzed.
The Hydrodynamics of One- and Two-Phase Flows in Channels with Longitudinally Continuous Twist
The difference between the torsion of a curve L on the original surface and the torsion of the corresponding curve on the isometric deformed surface at points corresponding by the isometry is called the twist of L.
Fr?nsdal [Fr1, Fr2] made a penetrating observation that both of them are quasi-Hopf algebras, obtained by twisting the standard quantum affine algebraUq(g).
The CH2 segments are in a mobile state because of the enhanced stretching and twisting vibrations of the C-CO and C-N bonds.
This method uses the free torsional theory and the principle of virtual work to build governing equilibrium equations involving unknown shear flows and twisting rate.
After changing the form of the equations and combining these two unknowns into one, torsional function, which is a function of shear flow, shear modulus, and twisting rate, is included in the governing equations as only one of the unknowns.
The advantage of this method is that we can easily and directly obtain torsional constants from the torsional functions, rather than the more sophisticated shear flow and twisting rate calculations.