Pretightening load design for bolt of closure flange structure under intensive impulse loading

被引：0
|
作者：
Cheng S. [1 ]
Zhang D. [1 ]
Liu W. [1 ]
Yin W. [1 ]
Shi Y. [1 ]
Chen B. [1 ]
Li Y. [1 ]
机构：
[1] Key Laboratory of Intense Dynamic Loading and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, Shaanxi
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2019年 / 39卷 / 02期
关键词：
Bolt; Bolt pretightening load; Flange; Impulsive loading; SHPB;
D O I：
10.11883/bzycj-2018-0007
中图分类号：
学科分类号：
摘要：
In this article, to figure out an optimal pretightening load selection for a closure flange structure under intense impulsive loading, we designed an experimental system based on the SHPB platform and the hydraulic principle and investigated the dynamic response process of a closure flange structure. The results showed that a minimum extreme point was observed on the curve of the total tensile strain of the bolt under the pretightening and impulsive loading versus the impulse peak. Further more, we obtained the variation pattern of the total tensile strain of the bolt with the change of the impulse peak and decay, which can be used as basis for the structural design and the selection of the bolt preload for a sealing flange under intense impulsive loading. © 2019, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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