摘要
某型航空发动机轴承试验器采用双"L"形安装边支承结构,采用ANSYS中solid45,solid95及solid187结构单元来计算其支承刚度,并通过传递矩阵法分别计算轴承试验器的临界转速。通过与轴承试验器的实际临界转速对比,分析三种单元结构对于该支承结构刚度的计算准确性,结果表明采用solid187结构单元计算的临界转速误差最小,可用于此种支承结构的静态刚度仿真计算。
The supporting structure with the double‘L’shape assembling sides is adopted for an aero-engine bearing tes-ter. The solid45,solid95 and solid187 structural units in ANSYS are used to calculate the supporting stiffness of the tester. The critical rotation speed of the bearing tester is calculated with the transfer matrix method. The calculation accuracy of three unit structures is analyzed for stiffness of the supporting structure by comparing it with the real critical rotation speed. The results show that the critical rotation speed got by solid187 has the smallest computation error,so the element type of solid187 can be applied to the simulation calculation of static stiffness of the supporting structure.
出处
《现代电子技术》
2014年第13期116-118,121,共4页
Modern Electronics Technique
关键词
结构单元
支承刚度
临界转速
航空发动机
structural unit
supporting stiffness
critical rotation speed
aero-engine
