摘要
加强肋旨在降低薄板结构的振动,研究肋的交叉分布、横分布、纵分布、肋截面参数、板厚因素的变化对振动的影响,通过正交试验,利用有限元法对一两端固支的矩形加肋板进行频率响应有限元分析,计算从1～200 Hz的响应,得到评定薄板振动量的大小。算例表明,在肋的质量不变的情况下,采用横向布置,肋的截面为15 mm×20 mm,板厚为0.014 m时振动量最小。运用正交试验、有限元法、虚拟试验相结合的方法处理具体的数据,避免庞大的实物试验所需要的高成本。
Enforced ribs are aimed at reducing the vibration of the plate structure. In order to study the effect on vibration by factors as the cross rib distribution, horizontal rib distribution, longitudinal rib distribution and plate thickness, the plate thickness, through orthogonal test, the finite element method was used to carry out the frequency response finite element analysis for the rectangular ribs fixed at two ends. The amount of vibration for evaluating the plate was obtained after calculating the response from 1 Hz to 200 Hz. Examples show that, under the condition that the mass of the rib does not changed, the amount of vibration is minimum if the horizontal configuration is used and the section area of the rib is 15 mm ×20 mm and the plate thickness is 0. 014 m. The method by combining orthogonal test, finite element method and virtual test is used to deal with specific data so as to avoid the high cost required by large physical test.
出处
《机械设计》
CSCD
北大核心
2012年第10期73-75,共3页
Journal of Machine Design
基金
安徽省高校省级科研资助项目(KJ2010B340)
关键词
薄板
加强肋
振动速度
有限元法
plate
enforced rib
vibration velocity
finite element method
