supported by the National Natural Science Foundation of China(Nos.11991032 and 52241103)。
To solve the problem of low broadband multi-directional vibration control of fluid-conveying pipes,a novel metamaterial periodic structure with multi-directional wide bandgaps is proposed.First,an integrated design me...
Project supported by the National Natural Science Foundation of China (Nos.12002195 and 12372015);the National Science Fund for Distinguished Young Scholars of China (No.12025204);the Program of Shanghai Municipal Education Commission of China (No.2019-01-07-00-09-E00018)。
Based on the generalized Hamilton's principle,the nonlinear governing equation of an axially functionally graded(AFG)pipe is established.The non-trivial equilibrium configuration is superposed by the modal functions o...
Project supported by the National Key Research and Development Program of China(No.2022YFC3002502)。
A novel vibration absorber is designed to suppress vibrations in fluidconveying pipes subject to varying fluid speeds.The proposed absorber combines the fundamental principles of nonlinear energy sinks(NESs)and nonlin...
Project supported by the China National Funds for Distinguished Young Scholars(No.12025204);the Shanghai Municipal Education Commission(No.2019-01-07-00-09-E00018)。
Fluid-conveying pipes are widely used to transfer bulk fluids from one point to another in many engineering applications.They are subject to various excitations from the conveying fluids,the supporting structures,and ...
supported by the National Science Funds for Distinguished Young Scholars of China(No.12025204);the Shanghai Municipal Education Commission of China(No.2019-01-07-00-09-E00018)。
Although most pipes are restrained by retaining clips in aircraft,the influence of the clip parameters on the vibration of the fluid-conveying pipe has not been revealed.By considering the clip width,a new dynamic mod...
Project supported by the National Natural Science Foundation of China(No.12002195);the Pujiang Project of Shanghai Science and Technology Commission of China(No.20PJ1404000)。
The coupling vibration of a hydraulic pipe system consisting of two pipes is studied.The pipes are installed in parallel and fixed at their ends,and are restrained by clips to one bracket at their middle points.The pi...
supported by the National Natural Science Foundation of China(Nos.11972167,12072119);the Alexander von Humboldt Foundation。
In several previous studies,it was reported that a supported pipe with small geometric imperfections would lose stability when the internal flow velocity became sufficiently high.Recently,however,it has become clear t...
Project supported by the National Natural Science Foundation of Shandong Province(No.ZR2013AL017);the National Natural Science Foundation of China(No.11272357);the Fundamental Research Funds for the Central Universities of China(No.11CX04049A)
The parametric excited vibration of a pipe under thermal loading may occur because the fluid is often transported heatedly. The effects of thermal loading on the pipe stability and local bifurcations have rarely been ...
The vortex-induced nonlinear vibration of casing pipes in the deep water was studied considering the loads of current and combined wave-current. The vortex-induced vibration equation of a casing pipe was set up consid...
Foundation items:the National Natural Science Foundation of China(50079007);the Hydraulic Science Foundation of China Hydraulic Ministry(SZ9830);the Natural Science Foundation of Yunnan Province(98E003G)
Nonlinearly dynamic stability of flexible liquid-conveying pipe in fluid structure interaction was analyzed by using modal disassembling technique. The effects of Poisson, Junction and Friction couplings in the wave-f...