| The paper basing on the finite element method uses ANSYS software for the Night Vision to carry out structural optimization.For target of the individual night vision in the small size and light weight, the paper chooses epoxy resin as matrix and carbon fiber to strengthen the fiber through combining the theory comparison and finite element analysis. In order to simplify the manufacturing process and reduce the weight and volume more, and to uniform stress distribution of joints, the paper chooses a low density, high elastic modulus and low thermal expansion coefficient of epoxy resin adhesive for bonding the various parts.The night vision initial structural design is completed with the AutoCAD. Through analyzing the carbon-fiber-reinforced epoxy resin composite materials in elastic-plastic finite element appears in a variety of simulated and night vision unit and the structure of the various units. Finally the paper chooses SOLID 185 structural unit and the MPC184 multi-point constraint solving unit.For the requirements of the individual night vision in anti-low temperature, ANSYS is selected as a indirect method to complete the night vision lens, eyepiece and the overall structure of the finite element thermal-structural coupled analysis. And then their different direction of displacement field contour map and contour map of stress in different directions is obtained. Numerical analysis and design requirements were compared to find out the reasons for deviation and go on the structural optimization cycle. The results show that the carbon used in fiber-reinforced epoxy resin composites is feasible. And the result of the completion of the structural design meets the design requirements. |
PDF Full Text Request