平衡式双排轴向柱塞泵缸体力学性能分析

为优化平衡式双排轴向柱塞泵缸体的力学性能,分析了缸体的受力情况,建立其力学模型和仿真模型,进行了有限元分析,得出不同结构参数下缸体的应力和应变的响应曲面,优化了缸体结构模型。分析不同载荷下应力应变曲线图,结果表明:平衡式轴向柱塞泵缸体具有良好的力学性能,缸体的轴向最大应变和径向最大应变主要取决于外排的变形;相比于仅外排和仅内排的缸体,双排缸体的径向和轴向应变远小于仅外排和仅内排缸体应变之和,表明平衡式轴向柱塞泵缸体双侧的力存在相互抵消情况,其结构相比普通轴向柱塞泵有一定的优势。

Analysis on Mechanic Property of Balanced Two-ring Axial Piston Pump's Cylinder

In order to optimize the mechanic property of the balanced two-ring axial piston pump 's cylinder , the force situation of the cylinder is analyzed, and the mechanical model and simulation model are established .Finite element analysis (FEA) on the cylin-der was studied , and the cylinder ' s response curves of the stresses and strains were obtained on the different structure parameters , so the cylinder 's structure could be optimized .The stress-strain diagrams on the different load were analyzed .The results show that the bal-anced two-ring axial piston pump has good mechanic property .The cylinder's maximum axial strain and maximum radial strain depend mainly on deformation of the outside ring .Compared to the cylinder of only inside ring and only outside ring , the two-ring cylinder's axi-al strain and radical strain is much less than the sum of only outside ring and only inside ring , and it indicates that the force of the two-ring cylinder can be offset , so the two-ring cylinder 's structure has certain advantages .