Analysis of Elasto-plastic Contact with Coating Surface of Weathering Steel of Fabricated Supports and Hangers

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Mai, Libo^1 ; Wang, Hehui^1

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China^1

关键词: Coating surface;    Elastic pipes;    Elastoplastic behavior;    Elastoplastic contact;    Loading condition;    NiCoCrAlY coatings;    Pressure center;    Residual deformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/5/052016/pdf
DOI  :  10.1088/1757-899X/490/5/052016

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Three-dimensional elasto-plastic behaviors of NiCoCrAlY coating under the indentation contact of rigid indenter are studied by using the finite element method, and the distribution of stress at the interface is analyzed. The influence of the coating of the weathering steel on the substrate material properties is studied when it is squeezed by the elastic pipe, and then the loading condition of the weathering steel is checked. The results show that the NiCoCrAlY coating can effectively improve the contact bearing capacity of the surface of the weathering steel, and there comes obvious residual deformation and stress in the coating entering the plastic stage after unloading. In addition, the compressive stress and the shear stress at the interface are mainly concentrated in the pressure center, and they will also increase with the increase of load. Eventually, the rationality of the design of the standard atlas of fabricated supports and hangers is verified.