Determination of damage material properties for the calculation of large rolling bearing carrying capacity

摘要

Determining the carrying capacity of a rolling contact in low rotational speed axial bearings doesn't yield satisfactory results when standard criteria for determining the rolling contact carrying capacity are applied. This is why we decided to simulate sub-surface elastic and plastic strain and contact stress in correlation with number of load cycles by using the Pedersen model of continuum damage mechanics. The model considers isotropic and kinematical hardening or softening and growth of material damage with increasing the load cycle number. The damage model is integrated into the finite element numerical model by which the simulation of the material response and its comparison to the experiment is conducted. The article presents the Pedersen model of continuum damage mechanics and experimental numerical determining of substantial properties of the material 42CrMo4 (ISO 683/1) for different states of a large rolling bearing ring.