For transmission of high-pressure corrosive fluids, it is required to pipe that with both anti-corrosive and high strength material. One of the economical and reliable approaches is the use of Tight Fit Pipe (TFP). Tight Fit Pipe is a double-walled pipe, where a corrosion-resistant alloy liner is fitted inside a carbon steel outer pipe through a thermal-hydraulic manufacturing process. TFP is manufactured under specified conditions for conducting this research. The most influential parameter to improve these pipes' structural response is the residual stress between the inner and outer pipes. In this study, finite element analysis and experimental method were utilized to calculate residual stress between the inner and outer pipes. A 2D finite-element model was performed in ABAQUS software to simulate the lined pipe with considering the effects of heat on the mechanical properties of the pipes and nonlinear isotropic/kinematic hardening material model. Analytical and experimental (Saw cut) methods were applied to measure residual stresses of two pipes to validate the numerical method's results. By comparing the simulation results with the experimental results, an appropriate agreement has been observed.

为了传输高压腐蚀性流体，需要使用防腐蚀和高强度材料对它们进行管道输送。经济和可靠的方法之一是使用紧配合管（TFP）。紧配合管是一种双壁管，其中耐腐蚀合金衬里通过热工液压制造工艺安装在碳钢外管内。TFP是在指定条件下制造的，用于进行这项研究。改善这些管道结构响应的最有影响力的参数是内，外管道之间的残余应力。在这项研究中，利用有限元分析和实验方法来计算内，外管之间的残余应力。在ABAQUS软件中执行了二维有限元模型，以考虑加热对管道机械性能的影响和非线性各向同性/运动硬化材料模型来模拟衬里管道。运用分析和实验（锯切）方法测量两个管道的残余应力，以验证数值方法的结果。通过将模拟结果与实验结果进行比较，已观察到适当的协议。