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分数阶导数阻尼下非线性随机振动结构响应的功率谱密度估计
  • ISSN号：1000-4939
  • 期刊名称：《应用力学学报》
  • 时间：0
  • 分类：O327[理学—一般力学与力学基础;理学—力学]
  • 作者机构：[1]西北工业大学,710072
  • 相关基金：国家自然科学基金（11172233;11202160）
作者： 孙春艳[1], 徐伟[1]
关键词： 分数阶导数, 粘弹性结构阻尼, 随机平均法, 统计线性化, 功率谱密度, fractional derivative, viscoelastic structural damping, stochastic averaging, statistical linearization, power spectral density.
中文摘要：

对于受到由分数阶导数模拟的粘弹性阻尼的非线性随机振动结构,本文给出了一种计算响应的功率谱密度方法。借助标准的随机平均法,首先得到了振动结构随机响应振幅的稳态概率密度。对于原振动结构的非线性项,运用改进的统计线性化方法得到了均方意义下的等价线性振动结构,并求得了其响应的依赖于振幅的条件功率谱密度。综合以上的结果,针对随机振动响应的功率谱密度的估计,通过与数值模拟结果进行验证,从而证明了所提方法的有效性和准确性。

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期刊信息
  • 《应用力学学报》
  • 北大核心期刊（2011版）
  • 主管单位:国家教育部
  • 主办单位:西安交通大学
  • 主编：陈宜亨
  • 地址：西安市咸宁西路28号西安交通大学
  • 邮编：710049
  • 邮箱：cjam@mail.xjtu.edu.cn
  • 电话：029-82668756
  • 国际标准刊号：ISSN：1000-4939
  • 国内统一刊号：ISSN：61-1112/O3
  • 邮发代号:
  • 获奖情况:
  • 国际工程索引（EI）及我国力学类核心期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:8573