锁止回路控制流道的流固耦合分析与优化

Fluid-structure Coupling Analysis and Optimization of Locking Circuit Control Channel

为了提高重型液力自动变速器锁止回路控制流道的结构合理性,使用ANSYS软件对锁止回路控制流道进行流固耦合分析,研究不同阀口开度L s和结构参数h时压降和最大Von-mises应力的变化情况。其次,基于CCD-RSM试验建立完全二阶响应面模型,通过诊断图评估回归模型的拟合优度,分析阀口开度和结构参数的交互作用。最后,使用响应面法对目标参数进行优化。结果表明,优化后的锁止回路控制流道进出口压降减小了31.37%,最大Von-mises应力和最大变形量分别减小了31.20%和57.55%,为提升锁止阀的工作性能和使用寿命提供了有力的依据。

In order to improve the structural rationality of the locking circuitcontrol channel for heavy-duty automatic transmission,the fluid-structure coupling analysis of the locking circuit control channelwas carried out with ANSYS software.The changes of pressure drop and maximum Von-mises stress with different opening degrees L s and structure parameters h were studied.Secondly,a complete second-order response surface model was established based on CCD-RSM test,and the goodness of fit of the regression model was evaluated by diagnostic graph.While the interaction between valve opening and structural parameter was analyzed.Finally,the response surface method was used to optimize the target parameters.The results shows that the pressure drop at the inlet and outlet of the control channel of the locking loop is reduced by 31.37%,the maximum Von-mises stress and the maximum deformation are reduced by 31.20%and 57.55%,respectively,which provides a strong basis for improving the working performance and service life of the lock valve.