衬里复合管液压胀接力的弹塑性有限元研究

doi:10.11885/j.issn.1674-5086.2020.05.08.03

西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (2): 159-167.DOI: 10.11885/j.issn.1674-5086.2020.05.08.03

衬里复合管液压胀接力的弹塑性有限元研究

陈俊文¹, 练章华², 汤晓勇¹, 谷天平², 施岱艳¹

1. 中国石油工程建设有限公司西南分公司, 四川成都 610041;
2. 油气藏地质及开发工程国家重点实验室·西南石油大学, 四川成都 610500

收稿日期:2020-05-08 发布日期:2022-04-22
通讯作者: 谷天平,E-mail:597332793@qq.com
作者简介:陈俊文,1987年生,男,汉族,四川成都人,工程师,主要从事油气田地面工程的研究。E-mail:chenjunw_sw@cnpc.com.cn
练章华,1964年生,男,汉族,四川自贡人,教授,博士生导师,主要从事CAD/CAE/CFD、计算力学、油气井工程与安全领域的计算机仿真等方面的研究。E-mail:cwctlzh@swpu.edu.cn
汤晓勇,1970年生,男,汉族,四川南充人,教授级高级工程师,主要从事油气田地面工程方面的研究。E-mail:tangxiaoyong@cnpc.com.cn
谷天平,1994年生,男,汉族,陕西渭南人,博士研究生,主要从事油气井工程力学方面的研究工作。E-mail:597332793@qq.com
施岱艳,1969年生,女,汉族,四川南充人,高级工程师,主要从事油气田地面工程的研究。E-mail:shidaiyan@cnpc.com.cn
基金资助:
中国石油CPECC资助项目（CPECC2019KJ13）

A Study on Elastoplastic Finite Element Study of Hydraulic Expansion of Lined Composite Pipe

CHEN Junwen¹, LIAN Zhanghua², TANG Xiaoyong¹, GU Tianping², SHI Daiyan¹

1. China Petroleum Engineering & Construction Corp., Southwest Company, Chengdu, Sichuan 610041, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2020-05-08 Published:2022-04-22

摘要/Abstract

摘要： 液压胀接力是影响衬里复合管液压成型质量的关键参数。根据实验数据建立了两种316L衬管材料的多线性强化的有限元模型，基于Tresca屈服准则，开展了衬里复合管在液压成型过程中极限胀接压力范围、胀接压力与紧密度关系的研究，并将有限元计算结果和解析解计算结果进行了对比。结果表明，当满足成型条件时，选择硬化强度较低的衬管材料，可以增大胀接力范围和紧密度区间，有利于制管胀接力的设计和控制；根据计算结果拟合了该成型条件下紧密度和胀接力的关系曲线，得出了两种材料的最小胀接力值分别为113.38 MPa和126.99 MPa。建立的材料多线性强化有限元模型可以准确地考虑衬管材料在胀接过程中的应变强化过程，为精确控制衬里复合管液胀成型参数提供了理论依据。

关键词: 衬里复合管, 液胀成型, 多线性强化模型, 有限元法, 紧密度

Abstract: Hydraulic expansion pressure is a key parameter that affect the forming quality of lined composite pipe. In this paper, based on the experimental data, multi-linear reinforced finite element models of two 316L liner materials are established; based on the Tresca yield criterion, we carried out research on the limit expansion pressure range, expansion pressure and tightness of the lined composite pipe in the process of hydraulic forming. The finite element results are compared with the analytical results. The results show that, when the forming conditions are satisfied, the selection of liner material with lower hardening strength can increase the expansion range and the tightness interval, which is conducive to the design of expansion pressure can be controlled. According to the calculation results, the relationship curve between the tightness and the expansion pressure under the forming condition is fitted, The minimum expansion values of the two materials are obtained to be 113.38 and 126.99 MPa respectively. The finite element model of material multi-linear strengthening established in this paper can accurately consider the strain strengthening process of liner material in the process of expansion joint and provide theoretical basis for the accurate control of the parameters of liquid expansion forming of lined composite pipe.

Key words: lined composite pipe, hydraulic expansion, multi-linear reinforced model, finite element method, tightness

中图分类号:

TE977

陈俊文, 练章华, 汤晓勇, 谷天平, 施岱艳. 衬里复合管液压胀接力的弹塑性有限元研究[J]. 西南石油大学学报(自然科学版), 2022, 44(2): 159-167.

CHEN Junwen, LIAN Zhanghua, TANG Xiaoyong, GU Tianping, SHI Daiyan. A Study on Elastoplastic Finite Element Study of Hydraulic Expansion of Lined Composite Pipe[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(2): 159-167.

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衬里复合管液压胀接力的弹塑性有限元研究

A Study on Elastoplastic Finite Element Study of Hydraulic Expansion of Lined Composite Pipe

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