The strength distribution near the transitional fillet curve on the shaft-parts under bending load is analysed in this paper by comparing the equi-strength curve with the transitional curre of the fillet.
The selecting principle of gear shaper cutter's modification coefficient and the four restricted conditions: no sharpening the top gear,no interference of the cut gear's fillet curve,no undercut and no top cut are discussed.
To realize the smooth connecting of the root fillet curve of cut gear with after-grinding involute profile of the gear,the material subtracting method as a new design method for the teeth profile of pre-grinding gear hob is presented.
In this paper, using the improved method of strained parameter, the authors obtain the periodic solutions and the transition curves of Mathieu equation when the amplitade of the parameter excitation is not small.
In this paper, the improved strained parameter method is used to obtain the periodic solutions and the transition curves of Mathieu equation with damping coefficient,when the amplitude of the parameter excitation is not small.
The results show that the transition curves obtained closely(agree) with those in Ref. ,while the stability domain obtained here is more reasonable than that in Ref. ,which is proved by numerical method.
The strong parametrical excited system was changed into weak parametrical excited system by a new transformation. Using modified strained parameter method,the periodic solutions with periods of π and 2π of undamped Mathieu equation were obtained and the corresponding transition curves were gained. The stability and instability domain of the(equation) were determined by the transition curves.
为了研究大幅值参数激励M ath ieu方程,通过引入新的变换,将强参数激励系统转化为弱参数激励系统,利用改进的变形参数法求解无阻尼项的M ath ieu方程,分别得到具有π和2π方程的周期解和相应的过渡曲线,并利用过渡曲线得到方程的不稳定区域和稳定域.
By analyzing the transmission mechanism of a planetary gearing, the author points out that an edge-correction of the tooth top of the internal gear is a right way to avoid the interference with the transition curves on planet gears and to ensure the precision and smoothness of transmission.
The shape of the Fermi surface and phase transition curve are sensitive to the value and sign of the hopping interaction t' between diagonal neighboring sites.
It is found that the tricritical point on the phase-transition curve corresponds to a much lower pressure and a considerably higher temperature (Ptr ≈ 0.355 GPa and Ttr ≈ 25.2 K) than was reported earlier (Ptr ≈ 1.2 GPa and Ttr ≈ 12 K).
While the metal-insulator transition curve of the () phase diagram exhibits a first order character, a "spin-flop" transition line divides the insulating state when the magnetic field is applied along the easy axis of magnetization.
Current and field shift the transition curve to lower temperatures, except near the onset of superconductivity where the core of the wire influences the transition.
Penetration effects must be accounted for the width of the inductive transition curve if the interior of the sample is not completely shielded by current loops.