Abstract:

In order for revealing of operational characteristics (clearance, deformation) on reliability and durability of mechanisms and machines in the paper is stated dynamic analysis of crank-piston mechanism with clearances in kinematic pairs and elasticity of links with concentrated masses. For full experimental research of operational characteristics of crank-piston mechanism due computer engineering on the first stage is studied mechanism with rigid links and concentrated masses and clearances. Then, by definition of compliance coefficients and deformation of coupler, the mass of that is concentrated in the three points, is compiled the dynamic model of system and are determined all desired parameters. The comparative analysis of ideal and real mechanisms is carried out. Is shown that for elastic links is necessary to select according stiffness that promotes to produce of mechanisms and machines the structural elements of that will be operated reliably and durably.

Keywords: piston; clearance; elasticity; concentrated mass; dynamics.