适用于双层管液压胀合的当量屈服强度法  

Application of Equivalent Yield Strength to Double-layered Tube Hydro-expanding

作　　者：郭小联[1,2] 刘富君 郑津洋[1] 朱国辉[1] 徐铭泽[3] 

机构地区：[1]浙江大学化工机械研究所,浙江杭州310027 [2]浙江省特种设备检验研究院,浙江杭州310020 [3]ARC压力容器有限公司,上海201600

出　　处：《轻工机械》2009年第3期1-4,共4页Light Industry Machinery

基　　金：浙江省科技厅重大科技攻关项目资助(2006c13002)

摘　　要：胀合液压力的大小在双层管液压胀合过程中起着决定性的作用,因此准确地确定胀合液压力的范围至关重要。文章在总结分析前人工作的基础上,提出了适用于双层管液压胀合的当量屈服强度法,给出了确定当量屈服强度的具体步骤。研究结果表明:应用该方法能有效地提高理论计算的精度,与试验值符合良好,计算数据与试验值之间的相对误差在0.96%～1.02%之间,为液压胀合双层管的工业生产提供较为科学的依据。Hydro-expanding pressure plays definite role in double-layer tubes expanding process, so accurately fixed the range of hydro-expanding pressure is essential. Based on the analysis and generalization of former research, the equivalent yield strength method suitable for hydro-forming of double-layered tubes was put forward, and the concrete approach to determine the equivalent yield strength was given. The results show that the method can effectively increase the accuracy of theory calculation with good coincidence the experimental data, its relative error is between 0.96% - 1.02%. The method provides theoretical references to engineering applications.

关 键 词：双层管 当量屈服强度 液压胀合 胀合液压力 

分 类 号：O343[理学—固体力学]