2) ambient excitation
环境激励
1.
Study on the identification method of damping for the building under ambient excitation;
环境激励下房屋建筑阻尼比的识别方法
2.
Study on identification of modal parameters under ambient excitation based on Morlet wavelet;
Morlet小波用于环境激励下的模态参数识别研究
3.
Civil engineering structural model test method based on ambient excitation;
基于环境激励的土木工程结构模态试验方法
3) environmental excitation
环境激励
1.
Dynamic test of structure by the method of environmental excitation;
环境激励下结构的动力测试
2.
By adopting natural excitation technique and mathematical statistics theory,a damage index is established,which is based on the strain measurement of structures under environmental excitation.
应用自然激励技术及数理统计理论,建立了基于环境激励下结构应变测试数据的损伤指标。
3.
Due to the huge volume of civil engineering structure, the vibration excitation is a difficulty; the modal identification based on environmental excitation is available.
由于土木工程结构体积大、形状复杂,外加激励难,因而利用环境激励来获取土木工程结构的模态参数被认为是一种行之有效的方法。
4) ambient vibration
环境激励
1.
For cases of ambient vibration,in which excitations are unknown,the flexibility matrix is unavailable.
在环境激励情况下,仅通过测试结构响应不可能获得结构柔度矩阵,因此提出了比例柔度矩阵的概念,该柔度矩阵与结构真正的柔度矩阵仅相差一个比例常数。
2.
An empirical mode decomposition(EMD) based stochastic subspace identification(SSI) method is presented to extract the modal parameters of the structure induced by ambient vibration.
提出了基于经验模式分解(EMD)的环境激励结构模态参数随机子空间识别(SSI)方法。
3.
It can identify the structural modal parameters by ambient vibration.
随机子空间法是近些年来发展起来的一种线性系统识别方法,可以有效地从环境激励的结构反应中获取模态参数。
5) environmental encouraging method
环境激励法
1.
It analyzes the environmental encouraging method of bridge structure mode parameters identification from max-value method and optional sub-space method.
从峰值法和时域识别的随机子空间法对桥梁结构模态参数识别的环境激励法进行了分析,并通过实例分别采用有限元法,典型波形识别法,PP法和SSI法进行讨论,从而确保系统识别结果的正确性。
补充资料：海洋自然地理环境(见自然地理环境)
海洋自然地理环境(见自然地理环境)
marine physical geographic environment
haiyang ziran dili huaniing海洋自然地理环境(marin。phys、calgeograPhic environment)见自然地理环境。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条