多头等壁厚橡胶螺杆钻具定子有限元分析

利用三维设计软件,建立了常规螺杆钻具定子和等壁厚橡胶螺杆钻具定子的二维平面模型,在有限元分析软件环境下,进一步建立定子的有限元分析模型,并分析了定子橡胶衬套内表面在均匀压力作用下的应力、应变和位移的分布规律。结果表明,在相同压力下,等壁厚衬套比常规衬套有更好的抗形变能力;在相同的过盈量下,等壁厚衬套有更好的密封能力;在同等扭矩下,等壁厚定子的长度可以缩短,等壁厚橡胶衬套内表面相对位移变化小,使转子与定子间产生均匀的过盈,从而提高了螺杆钻具的工作性能。

FEA of Stator of the Equal Wall Thickness of the Multiple Screw Drilling Tool

Two-dimensional planar modeling of stator of both traditional Screw drilling tool and the equal wall thickness of rubber of Screw drilling tool is set up with the 3D design software.Finite element analyzing modeling is set up as well,at uniformity pressure of inner surface of the stator rubber,regularities of distribution of the stress,the strain and the displacement are analyzed.And the results show that in the same pressure the equal wall thickness bush has a better anti-deformation capacity than traditio...