Transient Evolution of the Piston–Cylinder Oil Film and Thermo–Fluid–Solid Coupling Response in an Axial Piston Pump Under Complex Operating Conditions
Existing piston–cylinder lubrication studies often simplify the pressure boundary as a constant load or a single field, making it difficult to capture pump-level pressure excitation, local oil-film response, and non-concentric posture under variable loading. This paper establishes a thermo–fluid–solid coupling framewor...