The invention discloses an NURBS isogeometric solving method for an
internal feedback dynamic and static pressure sliding bearing
oil film pressure field. The method comprises the following steps: firstly, determining an analysis model of a bearing
oil film pressure solving problem, defining a
shape control point representing a solving region, establishing a complete
isogeometric analysis node vector and a shape interpolation
basis function based on an NURBS theory under a parameter coordinate
system, generating a numerical analysis grid, and obtaining an accurate analysis model according to calculation precision and capability; establishing a
geometric analysis model of bearing
oil film pressure and the like; based on an equal parameter conversion idea, carrying out isogeometric method
discretization on the analysis domain to construct an inner bearing oil film static pressure distribution field; constructing a bearing oil
film pressure distribution calculation model; deriving an equivalent integral weak form of a steady incompressible oil film Reynolds equation; integrating and deriving an equivalent integral weak form of a steady incompressible oil film Reynolds equation on a solving domain, applying a boundary condition, deriving an oil
film pressure calculation equation based on an
isogeometric analysis theory to obtain a linear equation set, and solving to obtain bearingoil film thickness and static pressure distribution.