摘要：Composite pipes are crucial for continuously transporting deep-sea oil, gas, and mineral resources. Composite materials have been applied to the design of flexible pipes to cope with weight and extreme loading challenges. However, under the influence of many nonlinear factors, the failure behaviour of composite flexible pipes is complex. This paper proposes a novel failure envelope analytical and numerical models for composite pipes based on through-thickness failure criteria. The failure characteristics of each layer, the material＇s nonlinearity, and the fibers＇ local deformation are fully considered. The numerical model also considers the detailed geometric characteristics of the composite pipe. Select corresponding failure criteria for different material characteristics to construct the failure envelope of composite pipes. An 8-inch composite pipe was used as a case study to verify the accuracy of the analytical model. The failure behaviour of composite pipes under axisymmetric loading is discussed. The composite pipes＇ stress field and failure envelope under axisymmetric loading are analyzed. In addition, the factors affecting the maximum loading of composite pipes are discussed.

关键字：Composite pipes; Elastic behavior; Failure envelope; Axisymmetric response; Three-dimensional stress

ISSN号：0951-8339

卷、期、页：卷: 105

发表日期：2026-01-15

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,CSCD（中国科技引文期刊）（核心）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：MARINE STRUCTURES

参与作者：Dong, Leilei,Liu, Gang

通讯作者：孙海波,林泽庆,余浩

第一作者：王莹莹

论文类型：期刊论文

论文概要：孙海波,王莹莹,林泽庆,Dong, Leilei,Liu, Gang,余浩，A novel analytical model for the failure envelope of composite pipes under axisymmetric loading，MARINE STRUCTURES，2026，卷: 105

论文题目：A novel analytical model for the failure envelope of composite pipes under axisymmetric loading