张瑞雪;曲艳东;于跃;吴锦达;许柏园;厉擎阳;
ZHANG Rui-xue;QU Yan-dong;YU Yue;WU Jin-da;XU Bai-yuan;LI Qing-yang;School of Civil and Architectural Engineering, Liaoning University of Technology;College of Civil Engineering, Dalian Nationalities University;

• 1:辽宁工业大学土木建筑工程学院
• 2:大连民族大学土木工程学院

摘要(Abstract)：

螺栓法兰连接结构具有强度高、构造简单和操作便捷等优点，被广泛应用于土木工程、机械工程、核工业和国防装备等工业领域。基于ANSYS/LS-DYNA软件建立有限元模型，研究了空爆载荷作用下(爆距为100～250 cm, TNT炸药当量为1 000～16 000 g)螺栓法兰管道的动力学性能。研究表明：炸药当量越大，爆距越小，螺栓法兰管道产生形变越明显，其峰值振速越大。适度增大爆距时，螺栓受到爆距的影响比受炸药当量的影响小，其位移曲线处于波动状态。外侧垫片的吸能作用有效减小了内侧垫片的变形，在一定程度上法兰垫片抵御了冲击波作用，使管道密封性得到保障。
Bolted flanged connection structures have the advantages of high strength, simple structure and convenient operation. They are widely used in civil engineering, mechanical engineering, nuclear industry, national defense equipment and other industrial fields. The finite element model was established by using ANSYS/LS-DYNA software to study the dynamic performance of bolted flanged pipe joints under air blast loads(the standoff distance from the explosive centre to bolted flanges is 100-250 cm and the explosive quantity of TNT is 1 000-16 000 g). The results show that the larger the quantity of explosive and the smaller the standoff distance, the more obvious the deformation of the pipe and the greater the peak vibration velocity. When the standoff distance increases moderately, the bolts are less affected by the standoff distance than by the quantity of explosive, and the displacement curve of the pipe structure is in a state of fluctuation. Moreover, the absorption of outboard gasket can effectively reduce the deformation of the medial gasket. To some extent, flange gaskets could with stand the action of shock wave, and ensure the sealing property of the pipe.

关键词(KeyWords)： 爆炸载荷;螺栓法兰管;数值模拟;动力响应;爆炸冲击波
blast loads;bolted flanged pipe joints;numerical simulation;dynamic response;explosion shock waves

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(11302094)

作者(Authors): 张瑞雪;曲艳东;于跃;吴锦达;许柏园;厉擎阳;
ZHANG Rui-xue;QU Yan-dong;YU Yue;WU Jin-da;XU Bai-yuan;LI Qing-yang;School of Civil and Architectural Engineering, Liaoning University of Technology;College of Civil Engineering, Dalian Nationalities University;

DOI: 10.19931/j.EB.20210165

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