It’s a challenge for the vibration analysis of a hardcoating cylindrical shell with the strain dependent characteristics of hard coating. In this work, considering the strain dependent characteristics, a selfcompiled finite element program was developed which was used to calculate the vibration characteristics of the hardcoating cylindrical shell. Firstly, based on the polynomial characterization of strain dependent mechanical parameters of hard coating, a fournode composite cylindrical shell element with 36degree of freedom was proposed to describe the hardcoating cylindrical shell structure. Then, the mass, stiffness matrix, and the load vector under the base excitation of the element were determined. Next, on the basis of determining the equivalent strain, the procedures of the solution of nonlinear vibration response and the resonant frequency were proposed using the NewtonRaphson method for the hardcoating cylindrical shell. Finally, the NiCoCrAlY+YSZ hard coating cylindrical shell was used as an example to solve the linear and nonlinear vibration characteristics. And the linear results were compared with ANSYS to illustrate the rationality of the developed program preliminarily. The nonlinear results show that the hardcoating cylindrical shell presents a characteristics soft nonlinearity with the increase of excitation amplitude.
张月,孙伟. 考虑应变依赖性的硬涂层圆柱壳振动特性有限元分析[J]. 振动与冲击, 2018, 37(12): 17-22.
ZHANG Yue, SUN Wei. A finite element analysis of the vibration characteristics of a hardcoating cylindrical shell considering the strain dependence of hard coating. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(12): 17-22.
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