Finite Element Analysis of Fretting Behavior Between an Engine Cylinder Block and a Main Bearing Cap

• 作 者: 廖日东 左正兴
• 机 构: School of Mechanical and Vehicular Engineering Beijing Institute of Technology,School of Mechanical
• 出 处: Journal of China Ordnance
• 发表日期: 2006年04期
• 关键词: cylinder combustion mating tangential fatigue resultant sliding fractured outsid

The finite element analysis of the fretting behavior between a cylinder block and a main bearing cap is presented. The stresses, relative fretting slip, frettin g friction work parameter W and crack initiation location parameter Gon the fretting contact surface of the cylinder block are obtained and analyzed. It shows that the fretting fatigue problem of the cylinder block can be quantitat ively explained by WorG. The effects of pretightening force, friction factor and material combination of the cylinder block and the main bearing cap are studied. The computational results indicate that the fretting fatigue of the cylinder block can be allayed by increasing the elastic modulus of the cylinder block, but not by changing the other two factors.

The finite element analysis of the fretting behavior between a cylinder block and a main bearing cap is presented. The stresses, relative fretting slip, frettin g friction work parameter W and crack initiation parameter set Gon the fretting contact surface of the cylinder block are obtained and It shows that the fretting fatigue problem of the cylinder block can be quantitat ively explained by WorG. The effects of pretightening force, friction factor and material combination of the cylinder block and the main bearing cap are studied. The computational results indicate that the fretting fatigue of the cylinder block can be allayed by increasing the elastic modulus of the cylinder block, but not by changing the other two factors.