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平板与周期加筋阻尼板间耦合损耗因子的研究 总被引:2,自引:0,他引:2
耦合损耗因子是统计能量分析中唯一用于表征耦合系统间能量交换的重要参数,本文在波传递理论基础上,分析了周期加筋阻尼板的波传播特性:即对于周期加筋阻尼板无论是在波的传播域,还是在波的衰减域都减域缩小。结合统计能量分析法,讨论了加强筋宽度、材料阻尼对耦合损耗因子的影响,得到了增加加筋板阻尼损耗因子,使平板至加筋板的耦合损耗因子增大的结论。 相似文献
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在我国加入WTO之后,各汽车整车及零部件开发、生产加工企业为了更好地适应新的市场环境,都在把产品质量作为打开市场的“金钥匙”,并以持续快速发展作为企业的第一要务。各企业正审时度势地为更快、更高、更强地发展而在充分考虑当前以及未来我国汽车工业的发展形势,并制定着新思路、新战略、新目标。面对各大汽车集团纷纷把做大中国汽车市场作为其战略目标,以及即将颁布的国家 相似文献
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本文介绍高速公路与银行联网的必要性及所需具备的条件,从数据传输、网络结构等方面阐述了联网实现的可能性。 相似文献
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深水SPAR平台截断技术研究(英文) 总被引:1,自引:0,他引:1
To solve the dimensional limitations of physical models in tests, an equivalent water depth truncated design for a classical
SPAR working in 913 m water was investigated. The water depth was reduced to 736m and then to 552m. As this was done, the
mooring line lengths, EA value, and mass per meter were adjusted. Truncation rules and formulas for parameters and truncation factors were proposed.
SPAR static characteristics were made to be consistent with those at full water depth. Then further time-domain coupled analysis
was carried out for the SPAR when the mooring system experienced waves. The mooring lines were simulated by quasi-static method.
Global responses and mooring line forces were found to agree well with test results for a prototype at that water depth. The
truncation method proved to be robust and reliable. 相似文献
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