中国塑料 ›› 2025, Vol. 39 ›› Issue (7): 44-48.DOI: 10.19491/j.issn.1001-9278.2025.07.008

• 加工与应用 • 上一篇    下一篇

基于渐进失效模型的RTP管力学性能分析

王文昊1(), 仇思源1, 李亚娇1, 孙靖尧1,2(), 吴大鸣1,2, 王树远3, 许红1, 盖云卿3   

  1. 1.北京化工大学机电工程学院,北京 100029
    2.有机无机复合材料国家重点实验室,北京 100029
    3.山东亚洪塑胶工业有限公司,山东 临沂 276600
  • 收稿日期:2024-07-28 出版日期:2025-07-26 发布日期:2025-07-22
  • 通讯作者: 孙靖尧(1991-),男,博士,教授,主要从事聚合物先进制造、复合材料成型方法及装备等方面研究,sunjingyao@mail.buct.edu.cn
    E-mail:wangwenhao98@foxmail.com;sunjingyao@mail.buct.edu.cn
  • 作者简介:王文昊(1998-),男,在读硕士研究生,主要从事功能复合材料加工制备等方面的研究,wangwenhao98@foxmail.com

Analysis of mechanical properties of RTP pipe based on progressive failure model

WANG Wenhao1(), QIU Siyuan1, LI Yajiao1, SUN Jingyao1,2(), WU Daming1,2, WANG Shuyuan3, XU Hong1, GAI Yunqing3   

  1. 1.School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
    2.State Key Laboratory of Organic?Inorganic Composites,Beijing 100029,China
    3.Shandong Ya Hong Plastic Industry Co. ,Ltd,linyi 276600,China
  • Received:2024-07-28 Online:2025-07-26 Published:2025-07-22
  • Contact: SUN Jingyao E-mail:wangwenhao98@foxmail.com;sunjingyao@mail.buct.edu.cn

摘要:

以一种增强热塑性复合管(RTP)为研究对象,通过Pyhton开发参数化建模脚本,使用ABAQUS建立RTP管道增强层模型,结合Hashin渐进失效准则判断增强层的失效情况。该模型能够在内压下对管道增强层的渐进失效位置进行判断,并能展现渐进失效过程。通过在内压下的RTP渐进失效模型的有限元分析,模拟了不同增强层层数和纤维缠绕角度对管道的力学性能影响。结果表明,在10 MPa内压下,4层增强层管道模型已完全能满足在该条件下的使用,其最内层纤维应力仅为1 468 MPa,Hashin失效判据也小于1。另外,纤维缠绕角度对于管道力学性能也有很大的影响,纤维承受应力随着缠绕角度的增加快速减小,当缠绕角度为±75 °时,增强层最大应力仅为816.3 MPa,相比±35 °减少了约48 %,并且Hashin失效判据仅为0.278。

关键词: 增强热塑性塑料管, 渐进失效, Hashin失效判据, 力学性能, 复合材料

Abstract:

This study investigated the mechanical behavior of reinforced thermoplastic composite pipes (RTP) under internal pressure using finite element analysis. A Python⁃based parametric modeling script was developed to establish the reinforcement layer model in ABAQUS, incorporating the Hashin progressive failure criterion to predict damage initiation and progression. The simulation analyzed the effects of reinforcement layer configuration and fiber winding angles on pipeline performance. Results demonstrated that a four⁃layer reinforcement design withstood 10 MPa internal pressure with a safety margin, exhibiting only 1468 MPa stress in the innermost fibers (Hashin criterion <1). Furthermore, fiber orientation significantly influences mechanical performance: at ±75 ° winding angles, maximum stress reduces by approximately 48 % compared to ±35 ° configurations (816.3 MPa vs. 1 569 MPa), with the Hashin criterion decreasing to 0.278. These findings provide valuable insights for optimizing RTP design parameters to enhance structural integrity under operational pressures.

Key words: reinforced thermoplastic pipe, progressive failure, Hashin failure criterion, mechanical property, composite

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