某型塔吊伺服阀阀套疲劳分析

胡秦

doi:10.13433/j.cnki.1003-8728.2016.0720

某型塔吊伺服阀阀套疲劳分析

doi: 10.13433/j.cnki.1003-8728.2016.0720

胡秦

1.
西北工业大学基建处, 西安 710072

基金项目:

大连理工大学工业装备结构分析国家重点实验室开放基金项目（GZ1312）资助。

详细信息

作者简介:
胡秦(1969-),副研究员,硕士,研究方向为建筑工程管理及建筑工程机械,huqin2000@nwpu.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2014-09-08
- 刊出日期: 2016-07-05

Fatigue Analysis of Valve Pocket for a Tower Crane Servo Valve

Hu Qin

1.
Office of Campus Construction, Northwestern Polytechnical University, Xi'an, 710072, China

摘要

摘要: 以某型塔吊液压式伺服阀阀套为例，采用雨流计数法处理其承受的周期载荷；采用经典处理S-N曲线（应力-循环次数关系曲线）的方法得到阀套材料440C的安全S-N曲线；针对用雨流计数法得到的载荷谱中的每一种工况，采用有限元分析软件MSC.PATRAN进行应力分析，得到每一种工况下的最大应力值；对照安全S-N曲线，找到每一最大应力值对应的损伤值，并将所有工况下的损伤值与循环次数相乘并求和，即可得到阀套的疲劳损伤值。采用的疲劳损伤计算方法与传统的疲劳试验方法相比，不仅计算时间比传统疲劳试验时间短，成本低，而且不会因为试件制造过程的缺陷等因素而使计算结果发散。
- 阀套 /
- 雨流计数法 /
- 疲劳损伤 /
- 安全S-N曲线
Abstract: Considering a tower crane hydraulic servo valve pocket, the cycle loads on which are handled by the rainflow-counting method and the safe S-N (Stress-Number of cycle) curve of the material used in valve pocket (440C) is obtained according to the classic processing method on the S-N curve firstly. Secondly, for each working condition in load spectrum, the maximum stress value is obtained during the finite element analysis on the MSC.PATRAN software platform. And then, consulting to the safe S-N curve, the fatigue damage value of each maximum stress value is obtained. Finally, the multiplying the fatigue damage value by cycle times, and the sum of which is the total fatigue damage value of the valve pocket. Comparing with the traditional fatigue test, the computational method on the fatigue damage proposed in this paper can not only save the analysis time and cost, but is also independent of the test specimen defects.
- valve pocket /
- rainflow-counting method /
- fatigue damage /
- safe S-N curve

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参考文献(15)

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