Dynamic stress fields in knuckle-joint press connecting rod under unloading

The finite-element model of the executing mechanism parts interaction takes account of the strain and kinematic displacements, inertia loads, gape, and friction on the contacting surfaces. The mathematical model allowing to calculate dynamic stresses, strains and contact pressures arising from the break-down of technological load, is proposed. The plots are given illustrating the stress-strain states at the most critical points, distribution of dynamic stress fields in the connecting rod body on the different stages of unloading, the contact stress redistribution dynamics in the connecting-rod big end in the moment of break-down of technological load.