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在工程设计中,有一类热套转子.在分析该类转子的过程中,若用一般的方法,把它视为整体转子来处理,则会带来相当大的误差,其计算结果往往比实际测试结果大得多.本文提出的该类转子的热套力学模型有效地解决了该类转子的振动分析和计算问题. 一、热套的力学模型和传递矩阵热套连接处并不是连续体,所以用整体模型来描述会引起相当大的误差,但热套使内外套筒有着一定的联系和约束,我们用内外套筒间的一串分布弹簧来描述这种约束. 如果热套段不是足够地短,则必须考虑其套筒本身的弹性变形.这里用静变形表示其形函数,记I_1和I_2分别为外套筒和内套筒的截面惯性矩,Y,θ、M和V分别为端部的位移、转角、弯矩和剪力,则得到下面的热套传递关系式:
In the engineering design, there is a kind of heat sleeve rotor.In the process of analyzing this kind of rotor, if it is treated as a whole rotor to deal with by the general method, it will bring considerable error, the calculation result is often more than the actual The test results are much larger.The thermal mechanical model of this kind of rotor proposed in this paper has effectively solved the problem of vibration analysis and calculation of this type of rotor.Firstly, the mechanical model of the thermowell and the junction of the heat transfer matrices are not continuous, Therefore, the overall model to describe will cause considerable errors, but the heat sleeve so that there is a certain relationship between the inner and outer sleeve and constraints, we use a bunch of distribution spring between the inner and outer sleeve to describe this constraint.If the heat jacket is not enough Must be taken into account the elastic deformation of the sleeve itself, where the static deformation is used to represent the shape function, I1 and I2 are the moment of inertia of the outer sleeve and the inner sleeve respectively, Y, θ, M and V are End displacement, corner, bending moment and shear force, get the following heat transfer relationship: