摘要
提出了一种针对双层柱面网壳结构的半主动符号控制策略,设计了一种特殊的可控杆件,这种可控杆件可以根据其两端节点动力反应在刚度和阻尼两种状态间切换。用MATLAB编制的程序对该控制策略下的2个双层柱面网壳进行了仿真计算。计算结果表明在替换数量不多的情况下减震控制效果可达到70％左右。在此基础上,又对网壳在不同替换位置下的减震控制效果进行了比较。
On the basis of the characteristics of double-layer cylindrical lattice shell, a new semi-active sign-control strategy of certain bottom chords replaced by special controllable chords is presented. The controllable chord can change its state between stiffness and damp according to the relative dynamical response of two nodes. The program made by MATLAB language computes two shell examples and the results prove that the damping control effect can reach 70%. On this basis, the control effect of lattice shell at different replacing positions is compared.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2003年第3期320-324,共5页
Journal of Beijing University of Technology
基金
国家自然科学基金(59895410)
北京自然科学基金(8982005)
关键词
双层柱面网壳
可控杆件
符号控制
double-layer cylindrical lattice shell
controllable chords
sign-control
