Recoil Parametric Design And Optimization

Recoil mechanism is the core part of artillery, the main role of which is to reduce the stress of artillery when it fires, make it move back to the pre-launch position and control the recoil parts according to the pre-determined rules of force and movement. The dynamic performance of recoil system directly affects the stability and accuracy of artillery firing. The traditional design process of recoil mechanism is the continuous optimization process of "design-evaluation-modification", which is mostly according to the designer’s experience of estimation of the various structure dimensions. The process is more dependent on the designers’ experience, and most cannot obtain the best design scheme, thus the traditional design process cannot meet the requirements of the modern artillery design.Therefore, based on the modern design theory and method, this paper conducts research on parametric design and optimization of recoil mechanism. Automation GATEWAY, the secondary development tool, has been used to do the parametric design work of recoil mechanism. After the analysis of overall forcing condition, the paper carries out the modeling and analysis of dynamic recoil mechanism. Based on dynamics model and optimization method, the structure of recoil mechanism has been optimized. After that, parametric analysis module and optimization module have been developed by EASA. The concrete research contents are as follows:(1) Parametric design method based on Pro/E:Automation GATEWAY has been selected as the tool of parametric development of Pro/E. After that, parameterization model of components and assembly of recoil mechanism has been established using VB, and also does the user interface and control procedure.(2) The force conditions of recoil mechanism during the recoil process have been analyzed and its dynamic model has been established. And then its MATLAB simulation program has been developed. After that, the recoil resistance force is solved using four-step Runge-Kutta method. Besides, taking a122mm-bore artillery as an example, this paper has got the maximal recoil resistance force and other motion elements.(3) On the basis of dynamics model and optimization method of recoil mechanism, the paper has carried out research of structural optimization of recoil mechanism. The optimization model of control rod, recoil cylinder and recoil rod has been established and ISIGHT has been used to optimization solving. By the structural optimization of control rod, the maximal recoil resistance force has significantly reduced and the curve has been much smoother. By the structural optimization of recoil cylinder and recoil rod, the radial size of recoil cylinder has significantly reduced.(4) Based on EASA, a software development platform, the paper has conducted the research of packaging technology of simulation program and optimization program. And also parametric design module and the optimization module have been developed, which has greatly simplified the input and output interface, formed a reusable templates, and effectively improved the efficiency of parameterization and optimization design.