摘要
为了分析振源设备安装方式对基座振动响应的影响,分别建立了简支板在点激励、线激励和面激励下的振动响应模型。研究表明:低频段,板的平均振动加速度级和振动分布特性在三种激励方式下都非常接近。高频段,点激励下的平均振动加速度级最大,面激励下的振动响应最小。板的振动分布特性与激励力的分布形式密切相关。
To analyze howthe installation type of vibration source equipmentaffects the vibration response of the base,three models of a simply supported plate under pointexcitation,line excitation and surface excitation were established separately here.The results of numerical analysis have shown： at lowfrequencies,the average vibration acceleration level and vibration distribution of the plate under the three types of excitation are very close to each other;at high frequencies,the average vibration acceleration level in response of point excitation is largest while that of surface excitation is the lowest,and the vibration distribution of the plate is closely related to the distribution of the excitation.
出处
《科学技术与工程》
2011年第11期2432-2434,2478,共4页
Science Technology and Engineering
基金
973项目(613100)资助
关键词
点激励
线激励
面激励
四边简支板
振动加速度级
point excitation line excitation surface excitation simply supported plate vibration acceleration level
