中文摘要：

为满足大口径舰炮的发展需求,提出一种基于变胞原理的装填机构。利用变胞原理进行结构设计,并结合机构运动简图对其进行运动描述和原理分析。采用有限元离散方法,将柔性杆划分为若干梁单元,使用混合坐标系描述梁单元的变形,列出柔性杆的动力学方程。应用Hamilton变分原理建立整个装填机构的刚-柔耦合动力学方程,使用Adams和Ansys联合仿真,得到仿真结果：当系统高速大范围运动时,基于变胞原理的装填机构存在较大的供弹误差;在基于变胞原理的大口径装填机构的研究中,应考虑连杆的柔性变形对供弹精度的影响。

英文摘要：

In order to meet the development needs of large caliber naval gun, a loading mechanism based on the metamorphic principle is proposed. The structure of loading mechanism is designed by using the metamorphic principle, and the motion description and principle analysis of the structure are conducted by combining the kinematic diagram of mechanism. The flexible rod is divided into some beam elements by using finite element discrete method, the deformation of beam elements is descripted under the mixed coordinate system, and a dynamic equation of the flexible rod is presented. A rigid-flexible dynamic e- quation is established by using Hamilton variational principle. The simulation result is gotten through the combined simulation of Adams and Ansys. The result shows that a big ammo-feeding error exists in the loading mechanism based on the metamorphic princi speed. The influence of the flexible deformation of ple rod when the system moves in a large range at a high-on loading accuracy should be considered in the research of large caliber naval gun based on the metamorphic principle.