CALCULATIONS OF DETAILS IN ORDER TO ESTIMATE THEIR RELIABILITY AND DURABILITY BY CRITERION OF FATIGUE STRENGTH

Abstract

Development  of  the  basic  provisions  for  determination  of  the  equivalent  stress  in accordance with the spectrum of the load of cylindrical spiral springs of the overload release clutches of the
rotatory  impeller  breaker  mills  with  the  further  use  of  such  basic  provisions  in  calculations  aimed  to estimate reliability and durability of details by criterion of fatigue strength. Up-to-date  methods  of  determination  of  statistical  characteristics  of  resistance  of details  fatigue,  computer  methods  of  processing  of  the  load  spectrums,  as  well  as  the  elements  of mathematical statistics and theory of probability are used.
Findings. Preliminary studies for working out of the design of the overload release clutches in order to estimate their reliability and durability by criterion of fatigue strength at limited initial data on the loads and mechanical characteristics of the strength of springs are presented.  Originality. Lies in the further development of the theory and methodology of mathematical support for the design of the machine details with the specified characteristics of reliability and longevity on base of loads spectrum. Practical value. The presented information allows increasing the quality and efficiency of the design solutions  on  the  provision  of  given  rigidity  of  the  elastic  overload  release  clutches  together  with  their compliance  with  the  reliability  and  durability  requirements.  Significant  normative  and  reference  support
regarding the object of the research is recommended.