大型精密镜架地面随机微振动响应分析
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摘要
针对激光惯性约束核聚变的大型精密镜架在环境地面随机微振动下的稳定性问题,建立了精密镜架的有限元动力分析模型。以镜架支撑安装基面上实测的地面振动速度功率谱密度为激励,运用ANSYS有限元分析软件的PSD分析模块,对该结构系统的随机振动响应进行了分析计算。分析表明:分析计算结果与实验数据吻合,目前的镜架支撑安装地面振动满足镜架稳定性要求。
Aiming at the stability problem of large-scale precision mirror mount caused by random vibration in the ICF(Inertial Confinement Fusion) facility,the finite element model of a mirror mount was established.The PSD measured on the install base level of the mount as the excitation,the random vibration response of the mount was analyzed with the PSD module of ANSYS.The analyzed results are in good agreement with the experiment values,and the actual vibration of installment base level meets the stability requirements of mirror mount.
Aiming at the stability problem of large-scale precision mirror mount caused by random vibration in the ICF(Inertial Confinement Fusion) facility,the finite element model of a mirror mount was established.The PSD measured on the install base level of the mount as the excitation,the random vibration response of the mount was analyzed with the PSD module of ANSYS.The analyzed results are in good agreement with the experiment values,and the actual vibration of installment base level meets the stability requirements of mirror mount.
引文
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