Application of Dang Van criterion to rolling contact fatigue in wind turbine roller bearings
A 2-D plane strain finite element simulation of rolling contact in wind turbine roller bearings is used to study very high cycle fatigue (VHCF).Focus is on fatigue in the inner ring,where the effect of residual stresses and hardness variation along the depth are accounted for.The purpose here is to ensure that VHCF failure does not initiate.For the purpose the Dang Van multiaxial fatigue criterion is applied,simulating the contact on the bearing raceway by substituting the roller with the Hertzian static pressure distribution.Contact without friction is assumed here and the material used for the simulation is taken to be an AISI 52100 bearing steel.Both an initially stress free bearing and different residual stress distributions are considered.An assumed residual stress distribution,equilibrated by an elastic step calculation,is subsequently subjected to the stresses caused by the contact with the roller.The effect of variable hardness along the depth is also studied,relating its values to the fatigue limit parameters for the material and it is found that its distribution can have a significant influence on the probability of failure for bearings subjected to VHCF loading.
High Cycle Fatigue Wind turbine Dang Van
Michele Cerullo
Department of Mechanical Engineering,Technical University of Denmark,Lyngby 2100,Denmark
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）