玻璃钢板的振动特性研究  

Research on Vibration Characteristics of FRP Plate

作　　者：陈哲 CHEN Zhe(Zhengzhou Electromechanical Engineering Institute,Zhengzhou 450015,China)

机构地区：[1]郑州机电工程研究所第一研究室,河南郑州450015

出　　处：《机械工程与自动化》2020年第5期39-41,44,共4页Mechanical Engineering & Automation

摘　　要：针对遥控武器站轻量化和降低振动水平的技术要求,探究了玻璃钢板的振动特性。基于模态测试结果,建立了玻璃钢板的振动特性预报模型,采用有限元方法对玻璃钢板进行数值分析。分析结果表明:铺层角度对玻璃钢板振动性能的影响是非线性规律变化的,而且在不同频段内呈现出不同的特征;对于交替铺层角度的玻璃钢板,±45°铺层角在0 Hz^1 000 Hz频段内具有较低的振动响应;将大小相同的载荷分布在尽量大的面积上或者增加激励力的个数,可以显著抑制玻璃钢板的振动;增强玻璃钢板的边界约束条件能够有效降低其振动水平。In response to the technical requirements for lightweight and reduced vibration levels of remote control weapon stations,the vibration characteristics of FRP plate were explored.Based on the modal test results,a prediction model of the vibration characteristics of the FRP plate was established,and the finite element method was used to perform numerical analysis on the FRP plate.The analysis results show that the influence of the layering angle on the vibration performance of the FRP plate changes in a non-linear law,and presents different characteristics in different frequency bands.For FRP plate with alternate lay-up angles,the±45°lay-up angle has a lower vibration response in the 0~1000 Hz frequency band.Distributing loads of the same size on the largest possible area or increasing the number of excitation forces can significantly suppress the vibration of the FRP plate.The boundary constraint conditions of the reinforced laminate can effectively reduce its vibration level.

关 键 词：玻璃钢板 振动特性 有限元 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]