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针对PW2 0 0 0泵用阻尼阀在 10 5MPa高泵端压力下出现的阀芯断裂问题 ,建立了阻尼阀阀芯改进前后的三维有限元力学计算模型 ,使用ANSYS分析软件对静态和高泵端压力下的阀芯应力进行了计算对比。计算结果表明 ,改进后的阀芯应力得到明显改善。在 10 0 0h可靠性考核中 ,改进后的阻尼阀阀芯未出现断裂问题
Aiming at the problem of spool rupture under the pressure of 10 5MPa high pump end, a three-dimensional finite element mechanics calculation model of damping valve was built. The ANSYS software was used to simulate the static and high pump end Pressure under the spool stress calculated comparison. The calculation results show that the improved spool stress is obviously improved. In the 10 0h reliability test, the improved damping valve spool did not appear to be broken