ABSTRACT

In recent years, reinforced thermoplastic composite pipe (RTP) is widely sought after because of its high strength and corrosion resistance. The development of a connector that is easy to install and highly reliable is essential for the successful application of RTP. In this paper, the mechanical properties of a butt-welding armoured joint between composite pipes were investigated by theoretical calculation method and finite element method. A plane strain model was established to study the mechanical response of the joint under internal pressure. In order to verify the theoretical results, a finite element model was established to analyse the stress distribution of the joint. Moreover, the finite element results are in good agreement with the theoretical results. The research of this paper provides a valuable reference for the engineering application of the joint in the pipeline system.

摘要

近年来，增强热塑性复合管（RTP）因其高强度、耐腐蚀等优点而广受追捧。开发易于安装且高度可靠的连接器对于 RTP 的成功应用至关重要。本文采用理论计算法和有限元法对复合管间对焊铠装接头的力学性能进行了研究。建立平面应变模型，研究内压下接头的力学响应。为了验证理论结果，建立了有限元模型，对接头的应力分布进行了分析。此外，有限元结果与理论结果吻合较好。