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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

11卷

期数:

1990年03期

页码:

40-47

栏目:

出版日期:

1990-09-28

文章信息/Info

Title:

Additional broken resistance of the filament tube

作者:

魏新利;

郑州工学院化工系,

Author(s):

Wei Xinli;

Department of Chemical, Zhengzhou Institute of Technology,

关键词:

止裂; 绕丝; 应力强度因子; 断裂阻力

Keywords:

Stop cracking;  Whenea;  Stress strength factor;  break resistance

文献标志码:

A

摘要:

含轴向外表面裂纹的简体经预应力钢丝缠绕后,不仅由于简体环向应力的降低而使其承载能力提高,而且还由于处于裂纹上方的钢丝对裂纹的张开和外鼓趋势具有局部约束作用,使简体的起裂压和断裂压都大大提高。本文在一定简化条件下计算了这种局部约束作用对简体产生的断裂阻力,并进行了实验验证。计算结果与实验结果吻合较好。本文的分析结果,可供工程绕丝止裂设计参考。

Abstract:

After the axis -containing outer surface cracks are wrapped through prestressed steel wires, not only because of the reduction of the simplified loop stress, it has improved its loading capacity, but also because the steel wire above the crack has a local constraint on the tension of the crack and the external drum trend, which greatly improves the cracking and fracture pressure of the simplified body. Under certain simplification conditions, this article calculates the fracture resistance produced by the simplified body, and has been experimentally verified. The calculation results are better with the experimental results. The analysis results of this article are available for engineering reference.

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更新日期/Last Update: 1900-01-01