Analysis of Stress on Beam of Small-range High-precision Quartz Flexible Accelerometer

The structure and working principle of quartz flexible accelerometer was analyzed, a stress analysis on the accelerometer beam was made according to the principle of mechanics. A structure design for the pendulum reed of accelerometer was developed in accordance with the small-range and high precision requirements. The basic structure parameters of the accelerometer were determined. ANSYS software was adopted to make mathematical modeling of pendulum reed of the accelerometer. Besides, finite element analysis of mechanics such as the overall displacement distribution characteristics of stress was also made. Compared with the simulation results, the beam would not break within +/- 2g range, it proved that the setting of the structural model of accelerometer with small-range and high-precision was correct, which provided a theoretical basis and method for the development of a material object.