双头单螺杆泵衬套有限元分析

用ANSYS对双头单螺杆泵衬套的受力情况作了有限元计算，为了提高计算效率，将螺杆泵衬套的有限元模型简化为平面应变模型求解。讨论了双头单螺杆泵衬套在受到均匀压力与非均匀压力，以及衬套和螺杆在静态接触的情况下，衬套内各点的变形、应力与应变的分布；揭示了双头单螺杆泵衬套的受力状态和变形规律。为双头单螺杆泵的结构优化设计及性能改善提供了参考依据。

FINITE ELEMENT ANALYSIS FOR A DOUBLE HELIX SINGLE SCREW PUMP BUSH

The finite element calculation is made to stress situation of the doublehelix single screw pump by the use of common software (ANSYS). The deformation, stress and strain's distribution of the doublehelix single screw pump bush are discussed when the bush is under equal pressure, disordered pressure and the static contact with the bush and screw. The stress state and deformation regularity of the doublehelix single screw pump bush are revealed, and the influence of condensability of the bush material on the deformation discussed, which offer the reference to the optimal design of the structure and the performance improvement of doublehelix single screw pump.