不同布孔方式下栅极组件冲击振动分析

基于有限元法建立多孔球面栅极板的结构模型,计算结构在离子流冲击载荷作用下的振动响应,分别考虑正方形和菱形两种不同布孔方式及不同开孔半径对结构性能的影响,得到栅极中心点处的位移、速度和加速度运动规律,以及螺栓与法兰连接处的应力响应。结果表明,不同的布孔方式和开孔半径对结构的性能有一定的影响,而正方形布孔方式更加合理;孔径的大小也影响结构的承载能力。通过对多孔球面栅极板的冲击振动分析,可以为多孔材料的安全设计提供有效的理论依据。

Grid Electrode Subassembly Impact Vibration Analysis under Different Hole Arrangement

Establish the structural model of porous spherical grid plate based on finite element method,cal-culate the vibratory response of structure under the function of ion flow impact load,respectively consider the influences of two different hole arrangements and hole radius of square and diamond type on the struc-ture,obtain the displacement,speed and acceleration motion law in the central point of grid electrode and the stress response in the j oint of bolt and flange.By contrast,it's found that different hold arrangements and hole radius has certain influence on the structural performance and the square type hold arrangement is more reasonable;the pore size also has influence on the structural load-bearing capacity.Based on the im-pact vibration analysis of porous spherical grid,it can provide effective theoretical foundation for the safety design of porous material.