泵头体应力集中分析

ANALYSIS OF THE STRESS CONCENTRATION OF FLUID-END

本文对石油酸化压裂车泵头体进行了三维有限元分析,找到其应力最大点。然后分析出应力集中的原因,在此基础上,通过变动相关尺寸而进行一系列的有限元计算,最后得到泵头体最大应力随关键尺寸变化的规律曲线,这个规律曲线近似为双曲线,为泵头体设计提供了可靠的理论依据。

In this paper, a study of the stress concentration, the factors and the rule of variation etc., on fluid-end of fracture truck by the 3D FEM is given. In the analysis, the location of the point of maximum stress has been found and the cause to induce the stress concentration has been analyzed. to obtain the rule curve showing the variation of the maximum stress with the changes of some key dimensions several FEM calculations have been performed. It is interesting to note that this rule curve is approximately a hyperbola which provides a reliable theory basis for fluid-end design.