摘要
在中子谱仪大承重样品台结构设计的过程中,由于回转轴承在回转中存在低晃动误差,影响测试精度。为分析三排滚子回转轴承的接触特性,采用在滚子滚道间设置非线性弹簧,用Hertz接触理论建立非线性弹簧力与变形关系的超单元建模方法,计算轴承在联合载荷作用下的静载荷特性参数。结果表明,大承重样品转台结构设计可行。数值算例表明改进方法计算结果与Hertz理论解一致,轴承承载后偏移量和旋转角度与理论计算结果间的误差在10%以内。验证了分析过程的合理性,为轴承研制的工程问题提供了可靠的设计依据。
During the design of the large load bearing sample of the neutron spectrometer, there is a low shaking error in the slewing bearing, which affects the accuracy of the test. In order to analyze the contact characteristics of three roller slewing bearings, a nonlinear spring was set up between the roller raceways, and the super element mod- eling method was used to establish the relationship between the force and deformation of the nonlinear spring by Hertz contact theory under the combined load of the static load characteristics. The results show that the structure of the turntable with large load bearing is feasible. The numerical examples show that the results of the improved method are in agreement with the Hertz theory, and the error between the bearing deflection and the rotation angle is less than 10%. The rationality of the analysis process was verified, which provides a reliable design basis for the engineering problems.
出处
《计算机仿真》
CSCD
北大核心
2016年第11期179-182,219,共5页
Computer Simulation
基金
国家重大科研仪器设备研制专项(513279045)
关键词
理论
非线性弹簧
超单元建模
Theory
Nonlinear spring
Super element modeling
