摘要
采用有限元仿真与物理实验相结合的方法,初步探索温度对石英挠性加速度计的热致变形误差影响规律,为提高其测量精度和工作稳定性奠定基础。根据石英挠性加速度计的结构特点和工作原理,建立有限元仿真模型,进行瞬态热仿真,得到石英挠性加速度计温度场分布;为检验热仿真结果的可靠性,设计物理实验测定石英挠性加速度计关键点的温度变化情况进行验证,结果表明在表壳内某点实验测试温度与该点仿真温度吻合较好。在此基础上,再进行热与变形耦合仿真,重点分析摆片组件变形对石英挠性加速度计标度因素的影响,为加速度计误差分析提供理论依据。
The finite element simulation, together with thermal experiment, is adopted for preliminarily exploring how thermally induced deformation makes affects on the accuracy and stability of Quartz Flexible Accelerometer （QFA）. According to the structural principle of QFA, the finite element simulation model of it is established; then, the all-temperature transient thermal simulation is carried out by the finite element method, so the result of it is in the form of temperature field, In order to test the reliability of the finite element simulation （FES）, the physical experiments is carried out. The finite element simulation is validated by comparison the consistency of the two results; and then the static structural simulation is carried out on the basis of the established FES by the ANSYS software. The results are shown in the form of deformation field, and the thermally induced deformation on the scale factor （K1） is analyzed, some useful results have been obtained.
出处
《强度与环境》
2012年第6期52-58,共7页
Structure & Environment Engineering
关键词
石英挠性加速度计
有限元仿真
物理实验
热固耦合
标度因数(K1
)
quartz flexible accelerometer
the finite element simulation
physical experiments
thermal-deformation coupling
thermally induced deformation
scale factor （K1）
