The split bearing bores of diesel engine are generally bored after tightening bolts to install crankcase and cylinder block. Machining accuracy significantly affects the contact state during sliding bearing operation, thereby reducing the service life of bearing. For effectively suppressing misalignment of interface caused by deformation of bearing bore, this paper presents finite element model and experimental measurement. The theoretical analysis and numerical calculation of interface are carried out in this paper. The finite element models of bearing bore and interface between crankcase and cylinder block are established to quantitatively analyze the deformation characteristic and contact state. The results indicate that the contact pressure of interface increases gradually with increase of the pre-tightening torque. The sliding distance of interface is positively correlated with the contact pressure of interface. Furthermore, the direction and value of the principal stress are calculated by measuring the strain of nodes around the bearing bore. Differential forces on both sides of bearing bore lead to joint surface sliding. Finite element simulation results are compared with experimental results to verify the finite element model.
This paper designs a box-type fixture based on SolidWorks software so as to provide a special fixture for stable and fast positioning of integrated impeller processing. It uses mechanics to analyze the force of the central axis, and the Simulation module to conduct stress and strain calculation. Example verifies the feasibility of the design. The design analysis provides a theoretical basis for the integrated impeller processing industry and is practical for its reference value.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.