With the increase in the coefficient of friction is a growth of the torque transmitted by the lead pair of friction of the main friction, reducing torque is transmitted by the slave pairs of friction friction core group and a couple of extra friction of the friction. Load transfer in the adaptive friction clutches reduces spacer force and accelerate the growth of the torque transmitted by the friction pair of the main driving frictional group.
Keywords: the coefficient gain, a separate positive connection, the coefficient of friction, clutch, friction pair
The coefficient of friction, whereby the total nominal load adaptive clutch transmitted only the leading pair of friction friction basic group is less than the maximum value, which may take the coefficient of friction in actual operation of the coupling. Appearance and an increase in the strength of the spacer when the external load and increasing at an elevated value of the friction coefficient begins at a certain minimum value of the external load, which depends on the total number of pairs of friction of the friction core and the gain. The dependences of the distributions of the torque between the lead pair of friction friction main group and driven friction pairs of basic friction and friction pair of extra friction.
Keywords: the coefficient gain, a separate positive connection, the coefficient of friction, clutch, friction pair
A number of tests in cutting setup alloy 10H12NVMFA fulfilled. A number of studies for specification of process gas (oxygen) impact on cutting speed, also of cutting speed impact on cutting width were performed. Optimal cutting parameters specified experimentally.
Keywords: laser cutting, cutting speed, cut sidewall, oxygen pressure, capacity
In a modified version of the adaptive clutch size of the spacer strength decreases due to a reduction of torque, which transmits the additional friction group, including, for the maximum value of the friction coefficient. Therefore, to save the value of the brace force is necessary to increase the ratio usileniya.Predlozhena concept modernized version adaptvnoy clutch with a combined feedback based on the formalization of the distribution of power factors for the closure of the main steam friction of the friction and more friction groups, allows you to simplify the design of the coupling compared to the base case
Keywords: the coefficient gain, a separate positive connection, the coefficient of friction, clutch, friction pair
At present the results of a visual inventory of most of the water bearing structures in Russia is in a state that requires a major overhaul. Practice shows that, after this period of time, facilities continue to operate without being replaced by new ones, and sometimes even without a thorough reconstruction, to restore and reconstruct the existing structures on the basis of emerging new and previously used reliable technology. The object of the study was considered Tashla underwater pipeline right-Yegorlykskaya channel. In the numerical formulation of mathematical experiment task was to scientifically determine the reliability of structures for such a long life (50 years), with different types of defects and damage. All calculations were performed on a certain software product SolidWorks, which is based on the method of finite elements and superelements.
Keywords: hydraulic structures, water-conducting channels, inverted siphons, non-destructive inspection methods, modeling, technical condition.
Information about authors of issue №2 (2009)
Keywords: authors