基于Isight-MSC.Patran/Nastran联合仿真的弧形闸门动力模型修正

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (19) : 62-68.

论文

吴思远 1,2，王正中 2，王岳 2，徐超 2，刘计良 3，吴守军 2

作者信息 +

Dynamic model updating for a radial gate based on simulation with Isight-MSC Patran/Nastran

WU Siyuan 1,2，WANG Zhengzhong 2，WANG Yue 2，Xu Chao 2，LIU Jiliang 3，WU Shoujun 2

Author information +

文章历史 +

摘要

为了获得精确的弧形闸门动力有限元模型，提出一种基于Isight-MSC. Patran/Nastran联合仿真与特征灵敏度优化相结合的快速建模方法。主要思路是在保证弧形闸门几何特征及动力特性一致情况下，通过软件联合调用实现质量重分布，以此得到相应的动力有限元模型。本文首先利用摄动法建立弧形闸门主框架目标模型，通过特征灵敏度优化方法迭代逼近，证明了该方法的有效性，进而通过与现有参数优化方法对比，说明了本文方法在保证最小改变量的情况下，能够获取更为精确的有限元动力分析模型。在此基础上根据弧形闸门完全水弹性模型实测数据建立了相应的动力有限元模型，实例计算表明该方法只需较少的迭代步骤就可以实现精确建模。

Abstract

In order to obtain an accurate dynamic finite element (FE) model of a radial gate, a rapidly modeling method based on combining Isight-MSC Patran/Nastran simulation and Eigen-sensitivity optimization was proposed.The main idea was that under the condition of ensuring the radial gate’s geometric features and its dynamic characteristics being consistent, mass redistribution is realized through combined calling software to derive the corresponding dynamic FE model.Here, the perturbation method was used to establish the target model for the main frame of the radial gate, and prove the validity of this method through iteration and approaching using the Eigen-sensitivity optimization method.Furthermore, through comparing this method with existing parametric optimization methods, it was shown that the proposed method can be used to get a more precise FE dynamic analysis model under the condition of guaranteeing the minimum variation.Using this approach, a dynamic FE model was constructed according to the actually measured data for the full hydro-elastic model of a radial gate.Example calculations showed that the proposed method needs fewer iteration steps to realize accurately modeling.

导出引用

吴思远 1,2，王正中 2，王岳 2，徐超 2，刘计良 3，吴守军 2. 基于Isight-MSC.Patran/Nastran联合仿真的弧形闸门动力模型修正[J]. 振动与冲击, 2018, 37(19): 62-68

WU Siyuan 1,2，WANG Zhengzhong 2，WANG Yue 2，Xu Chao 2，LIU Jiliang 3，WU Shoujun 2. Dynamic model updating for a radial gate based on simulation with Isight-MSC Patran/Nastran[J]. Journal of Vibration and Shock, 2018, 37(19): 62-68

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