In this paper, a certain type of ammunition bracket was studied, the stress distribution under working load is calculated by static analysis and display dynamic analysis, the stress distribution result show that the maximum load corvette flags tattoo during the working cycle is the instantaneous impact force.Through ANSYS software, Goodman theory m
There are about 20 major factors influencing wear of railway system of a wheel, but the most critical include service cookie cutter shark plush and lubricant of rails.On the basis of locomotive depot Rodakovo the analysis of regularity of wear of a surface of wheels of the locomotive during the long period of time has been made and the method of co
We explore the estimation of a two-dimensional (2D) nonsymmetric coherently distributed (CD) source using L-shaped arrays.Compared with a symmetric source, the modeling and estimation of a nonsymmetric source are more practical.A nonsymmetric CD source is established through modeling the deterministic angular signal distribution function as a summa
Two provenance tests in North-Eastern Bulgaria have been studied, whose purpose is to test the response of beech provenances from Southern Germany to the drier and warmer climatic h?rklype conditions in Bulgaria, in order to predict how they would perform in a warming and drying climate.The provenance tests were established in the spring