ANSYS-APDL (ANSYS parametric design language) development based method for performing transient heat-structure coupling analysis on spherical optical bow cap in complex heat environment

Abstract

The invention discloses an ANSYS-APDL (ANSYS parametric design language) development based method for performing transient heat-structure coupling analysis on a spherical optical bow cap in a complex heat environment. The method comprises steps as follows: 1, establishing any spherical optical bow cap finite model on the basis of the APDL; 2, calculating time parameters and determining material physical parameters for the spherical optical bow cap on the basis of the APDL; 3, loading heat transfer and force boundary conditions of heat flux density and pneumatic pressure changing along with time on the basis of the APDL; 4, performing solution control and result post-processing on the basis of the APDL. Compared with a process for directly adopting a user interface for analysis, the method has the advantages that defects that repeated loading of same problems is time-consuming and effort-consuming, can cause errors easily and the like are overcome, and dynamic calculation of pneumatic heat response of the bow cap is realized successfully under the condition that the heat flux density and the pneumatic pressure of the outer surface of the bow cap change along with time due to use of macro.

Description

technical field [0001] The invention belongs to the field of aero-optical effect research, and relates to a transient heat-structure coupling analysis method for a spherical optical head cover in a complex thermal environment developed based on the ANSYS-APDL language. Background technique [0002] Under the aerodynamic thermal environment, the shape and optical properties of the spherical optical hood will change due to the effects of heat conduction and thermal stress, which will affect the transmission of infrared radiation from the target, causing the high-speed aircraft imaging detection system to blur the image of the target. Jitter, offset and energy attenuation will eventually seriously affect the detection performance of high-speed aircraft. When the aircraft flies in the atmosphere at high speed, there is a violent interaction between its hood and the incoming flow, and the temperature of the hood increases, making the optical imaging detection system in a complex ...

AI Technical Summary

Problems solved by technology

[0002] Under the aerodynamic thermal environment, the shape and optical properties of the spherical optical hood will change due to the effects of heat conduction and thermal stress, which will affect the transmission of infrared rad

Images