【摘要】 研究了粘滞阻尼器对双层柱面网壳减震效果的主要影响参数和影响规律。通过考虑阻尼器不同的设置方式、设置位置和数量、阻尼系数,以及不同的网壳矢跨比,线性阻尼器与非线性阻尼器的比较等,进行了一系列减震参数分析。结果表明,替换方式优于附加方式,替换杆件的数量存在临界值,阻尼系数存在最优范围,网壳矢跨比的影响显著,非线性阻尼器和线性阻尼器的减震效果基本相同等。这些规律对实际工程应用具有一定的参考意义。更多还原

【Abstract】 This paper studies primary parameters and action rules which influence the effect of vibration reduction by viscous damper on double-layer cylindrical latticed shell.By considering different setting manner,position and number,damping coefficient of damper,and different height vector span ratio of latticed shell and the comparison between linear damper and nonlinear damper,parametric analysis of vibration reduction was carried out.The results indicate that for the effect of vibration reduction replaceable manner is superior to appending manner,and the number and damping coefficient of damper have optimal values,the influence of height vector span ratio of latticed shell is significant.The nonlinear damper provides almost the same energy-dissipation level as linear damper.The conclusions drawn from this paper can be useful to practical engineering.更多还原