岩土工程学报2023，Vol.45Issue(z2)：128-133,6.DOI:10.11779/CJGE2023S20016
WIB在动力机器荷载激励下的远场被动隔振分析
Far-field passive vibration isolation of WIB under dynamic machine loads
摘要
Abstract
In order to study the passive vibration isolation effects of wave impeding block(WIB)under dynamic machine load,a 3D finite element model for power machine foundation-WIB-soil is established by using the numerical simulation method.The effects of the buried WIB used for dynamic machine excitation on far field surface vibration transmission barrier are calculated and analyzed,and the influences of different parameters on the vibration isolation effects of the WIB are studied.The results show that under the vertical dynamic machine loads,the WIB installed in the foundation under the protected body has certain barrier effects on the vertical and horizontal vibrations of the surface,and the overall vibration isolation effects is better in the vertical than in the horizontal.Adjusting the thickness,width and buried depth of the WIB has effects on the passive vibration isolation effects.With the increase of the thickness of the WIB,the vibration isolation effects of the surface above the WIB basically increase.When the width of the WIB increases,the barrier region of the surface vibration above the WIB expands.When the depth of the WIB up to 4 times the Rayleigh wavelength,the surface vibration in the region of the WIB will be amplified obviously.When it is shallowly buried,the WIB can effectively block the vibration waves,and the vibration isolation effects behind the WIB are obviously better than those above the WIB.关键词
动力机器基础/WIB/ABAQUS/三维有限元模型/隔振Key words
dynamic machine foundation/WIB/ABAQUS/3D finite element model/vibration isolation分类
建筑与水利引用本文复制引用
陈娟,吴昱洁,高广运,宋耀..WIB在动力机器荷载激励下的远场被动隔振分析[J].岩土工程学报,2023,45(z2):128-133,6.基金项目
国家自然科学基金面上项目(51978510,42277130) （51978510,42277130）
山东省自然科学基金青年项目(ZR2020QE264) （ZR2020QE264）
山东省高等学校青年创新团队发展计划项目(2023KJ123) （2023KJ123）
