FINITE ELEMENT BASED MAGNETIC-STRUCTURAL COUPLING SIMULATION METHOD FOR QUARTZ FLEXIBLE ACCELEROMETER

摘要

A finite element based magnetic-structural coupling simulation method for a quartz flexible accelerometer, comprising the following steps: 1: selecting a finite element unit; 2: establishing a material model library, which comprises defining a unit system and inputting material attributes of each component; 3: establishing a geometrical model of the accelerometer, which comprises structure simplification and ignoring, concatenation simplification, geometrical model establishment and attribute assignment; 4: establishing a finite element model of the accelerometer; 5: applying constraints and loads, which comprises magnetic field constraints, structural constraints, constant temperature loads, current density loads and acceleration loads; and 6: performing transient magnetic-structural coupling simulation. The method takes both the material nonlinear variation of each component of the accelerometer and the magnetic-structural coupling action into account; on one hand, optimal design can be applied to the structure, and on the other hand, a variation model of performance parameters can be established based on simulation results, and the design cycle and the design cost of the quartz flexible accelerometer may be reduced.