Simulation and Optimization of Hydraulic Spool Valve Opening Process Based on Fluid-structure Interaction

doi:10.3969/j.issn.1000-1093.2017.03.026

Abstract

Abstract: To improve the working capability of the spool during the opening process of hydraulic spool valve, a three-dimensional numerical model is established based on fluid-structure interaction theory and dynamic mesh technology, and the movement of spool under the action of driving force, spring force and flow force is simulated. The internal flow channel structure is improved in view of stress on spool. The objective functions of peak value of the maximum von Mises stress and flow force are set up through least squares fit and BP neural network, with four structural parameters of improved spool notches and convex being taken as the optimization object. The optimal values of four structure parameters of notches and convex platform are determined by using genetic algorithm. After optimization, the maximum von Mises stress is decreased by 22.0%, and the maximum flow force is decreased by 16.3%. Results show that the spool valve opening performance is obviously improved through the study of the optimization design of structural parameters of spool. Key

Key words: fluidmechanics, hydraulicspoolvalve, fluid-structureinteraction, dynamicmesh, geneticalgorithm

CLC Number:

TH137.52⁺1

ZHANG Sheng, WANG Qiang, HE Xiao-hui, GAO Ya-ming， WANG Xin-wen. Simulation and Optimization of Hydraulic Spool Valve Opening Process Based on Fluid-structure Interaction[J]. Acta Armamentarii, 2017, 38(3): 608-615.

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第38卷
第3期2017 年3月兵工学报ACTA
ARMAMENTARIIVol.38No.3Mar.2017

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