Table 1 Parameters of numerical simulation.
Parameters | Value |
|---|---|
Flow coefficient of the constant orifice of piston assembly Cq | 0.82 |
The constant orifice diameter of piston assembly dAT/mm | 0.65 |
Oil density ρ/kg/m3 | 900 |
Piston diameter dh/mm | 24 |
Dynamic viscosity of the oil μ/Pa s | 0.017 |
Axial width of piston Ly/mm | 20.5 |
Initial oil film thickness between piston and cylinder h0/mm | 0.01 |
Flow coefficient of extension throttle orifice \(\varepsilon_{fc}\) | 1 |
Total area of extension valve orifice Afc /mm2 | 1.28 |
Outside radius of extension valve plate rbf /mm | 8 |
Notch radius of the extension valve plate rkf /mm | 5 |
Flow coefficient of the constant orifice of foot valve assembly \(\varepsilon_{yc}\) | 1 |
Total area of the constant orifice of foot valve assembly Ayc /mm2 | 4.05 |
Outside radius of check valve plate rbb/mm | 8 |
Notch radius of check valve plate rkb/mm | 5 |
Thickness of valve plate hffp/mm | 1.2 |
Initial volume of reservoir chamber V0/m3 | 0.05 × 10–3 |
Initial pressure of reservoir chamber P30/MPa | 1 |
Section area of piston rod Ag/mm2 | 78.5 |
