Sensor grid discretization error evaluation method based on ANSYS software

Abstract

The invention belongs to the technical field of sensors and computers, and particularly relates to a sensor grid discretization error evaluation method based on ANSYS software. According to the method, firstly, a sensor model is established, grids are divided, then ANSYS software grid quality self-evaluation and error self-evaluation are carried out, and after self-evaluation, high-precision grid quality and an accurate simulation result are obtained by inserting convergence control and setting convergence parameters; and a final grid discretization error is calculated by adopting a Richardson extrapolation formula and an error calculation formula, and whether the error can meet requirements or not is judged, and if not, it is continued to set convergence parameters. According to the sensor grid discretization error evaluation method provided by the invention, the evaluation process of the sensor grid discretization error is described in detail, the grid quality of a sensor simulation model is improved, the grid discretization error of the sensor is solved, the accuracy of a simulation result is improved, and ANSYS error self-evaluation can only obtain a relative error.

Description

technical field [0001] The invention belongs to the technical field of sensors and computers, and in particular relates to a sensor grid discretization error evaluation method based on ANSYS software. Background technique [0002] Due to its high robustness, high sensitivity, high temperature stability and high responsivity, silicon carbide high-temperature capacitive sensors are mainly used in aerospace engine air inlet pressure measurement. The environment is relatively complex, and it is difficult to directly monitor the work of the sensor. State, using ANSYS software to carry out finite element simulation on the sensor, the higher precision simulation results help the surveyors to grasp the working ability and working state of the sensor in a complex environment. [0003] Under the condition that the boundary conditions and loads of the sensor model are reasonable, the discretization error of the grid unit is the main source of the simulation error of the finite element ...

AI Technical Summary

Problems solved by technology

Due to the "energy self-locking" phenomenon, the stress in some areas of the model is too large, making it impossible to judge whether the simulation results are reasonable

At present, the evaluation method of the discrete error of the sensor grid is limited to the self-evaluation of the ANSYS error software, but the error of the software self-evaluation is only a relative error, that is, the error measure of the high error area is calculated relative to other grid cells in the model , does not reflect the sensor grid discrete error

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