Free vibration analysis of multi-span pipe conveying fluid with dynamic stiffness method

▶ The dynamic stiffness method was proposed to analysis the free vibration of multi-span pipe conveying fluid. ▶ The main advantage of the proposed method is that it can hold a high precision even though the element size is large. ▶ The flowing fluid can weaken the pipe stiffness, when the fluid velocity increases, the natural frequencies of pipe are decreasing.