| 泵阀箱材质自增强与疲劳强度研究 |
| |
| 引用本文： | 陶春达,战人端.泵阀箱材质自增强与疲劳强度研究[J].机械强度,2000,22(2):146-148. |
| |
| 作者姓名： | 陶春达 战人端 |
| |
| 作者单位： | 西南石油学院,机械系,四川南充,637001 |
| |
| 摘 要： | 以内壁带“Ｖ”型缺口的厚壁圆环为对象,对两种高压泵阀箱常用钢４３ＣｒＮｉ２ＭｏＶａ、４２ＣｒＭｏＡ在自增强处理前后的疲劳寿命进行了理论分析与实验研究。首先用弹塑性有限元法计算了自增强后所形成的残余应力,发现自增强处理后在缺口根部所形成的残余应力有一最大值,有明显的残余应集中现象。
|
| 关 键 词： | 自增强 疲劳强度 残余应力 应力分析 泵阀箱 钢 |
| 修稿时间： | 1998-11-02 |
RESEARCH ON MATERIAL OF PUMP FLUID END ABOUT AUTOFRETTAGE AND FATIGUE STRENGTH |
| |
| TAO Chunda,ZHAN Renrui.RESEARCH ON MATERIAL OF PUMP FLUID END ABOUT AUTOFRETTAGE AND FATIGUE STRENGTH[J].Journal of Mechanical Strength,2000,22(2):146-148. |
| |
| Authors: | TAO Chunda ZHAN Renrui |
| |
| Affiliation: | TAO Chunda
,ZHAN Renrui
;(Department of Mechanical Engineering, South West Petroleum Institute, Nanchong 637001, China) |
| |
| Abstract: | Selecting the thick-wall circle with a "V" notch on it' s inner side as an object, we analyzed the fatigue life of autofrettaged high pressure pump which is usually made of 43CrNi2MoVA or 42CrMo. First, we analyzed the residual stress with elasto-plastical finite element method, it is discovered that there is a maximum residual stress at the root of the inner notch, and the residual stress concentration appeared. Then we took the steady residual stress into Goodman formula as average stress, as a result, the effective equivalent stree was got, and the fatigue life after being autofrettaged can be calculated, the results is coincident with the test results. At last the fatigue life was test, the result shows that the fatigue hfe of two different materials can be increase by more than 5 times. |
| |
| Keywords: | autofrettage fatigue strength residual stress stress analysis pump fluid end |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
