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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >EFFECTS OF EQUIPMENT LOADING ON THE VIBRATIONS OF EDGE-STIFFENED PLATES AND ASSOCIATED MODELING ISSUES
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EFFECTS OF EQUIPMENT LOADING ON THE VIBRATIONS OF EDGE-STIFFENED PLATES AND ASSOCIATED MODELING ISSUES

机译：设备载荷对边缘加劲板振动和相关建模问题的影响

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摘要

Predicting structural radiated noise is a process that involves several steps, often including the development of a finite element (FE) model to provide structural response predictions. Limitations of these FE models often govern the success of overall noise predictions. The purpose of the present investigation is to identify the effects of real world attachments on edge-stiffened plates and identify advanced modeling methods to facilitate vibroacoustic analyses of such complex structures. A combination of experimental and numerical methods is used in the evaluation. The results show the effects of adding attachments to the edge-stiffened plate in terms of mode shape mass loading, creation of new mode shapes, modifications to original mode shapes, and variations in damping levels. A finite element model of the edge-stiffened plate with simplified attachments has been developed and is used in conjunction with experimental data to aid in the developments. The investigation presented here represents a necessary first step toward implementing an advanced modeling technique.
机译：预测结构辐射噪声是一个涉及多个步骤的过程，通常包括开发有限元（FE）模型以提供结构响应预测。这些有限元模型的局限性通常决定着整体噪声预测的成功。本研究的目的是确定现实世界中附件对边缘加劲板的影响，并确定先进的建模方法以促进这种复杂结构的振动声学分析。在评估中使用了实验方法和数值方法的组合。结果表明，在模态质量载荷，增加新模态形状，修改原始模态形状以及改变阻尼水平等方面，在边缘加劲板上增加附件的效果。已经开发了带有简化附件的边缘加劲板的有限元模型，并将其与实验数据结合使用以帮助开发。这里介绍的研究代表了实现高级建模技术所必需的第一步。

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