【摘要】 基于脉动流体的双向流固耦合对变约束参数T型输流管道的振动特性进行分析。验证考虑分支管道局部区域壁厚的必要性。研究管径、流体压力、管道支承刚度和入口条件类型对流体与管道振动响应的影响规律。结果表明：在一定参数范围内，管径越大，管道响应越剧烈；流体压力越高，管道越快达到稳定状态，且响应幅值较小；单入口情况下管道参数响应数值差异明显大于双入口；管道支承刚度越小，振动响应越明显且振动状态持续时间越长。多种工况下T型管路的振动响应规律可为液压管路布局或参数选择提供参考。更多还原

【Abstract】 Based on the bidirectional fluid-structure interaction of pulsating fluid, the vibration characteristics of T-type pipeline with variable constraint parameters are analyzed, and the necessity of considering the local area wall thickness of branch pipeline is verified. The influence of pipe diameter, fluid pressure, pipe support stiffness and inlet condition type on the vibration responses of fluid and pipeline is studied. The results show that in a certain parameter range, the larger the pipe diameter is, the more severe the pipe response is. The higher the fluid pressure is, the faster the pipeline reaches the stable state, and the response amplitude is smaller. The numerical difference of pipeline parameter response of single inlet fluid is significantly greater than that of double inlet fluid. The smaller the pipe support stiffness is, the more obvious the vibration response is and the longer the vibration state duration is. The vibration response law of T-shaped pipeline under various working conditions has provided a reference for hydraulic pipeline layout and parameter selection.更多还原