高阶弯曲夹层梁的自由振动

Damage Initiation and Prediction in Composites, Sandwich Structures and Thermal Barrier Coatings Pub Date : 2001-11-11 DOI:10.1115/imece2001/ad-25319

Y. Frostig, E. Bozhevolnaya

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引用次数: 0

摘要

提出了单弯曲夹层梁自由振动的高阶模型。该模型考虑了夹芯板的横向柔性，而夹芯板的表面被视为薄梁。导出了直线运动方程和自然边界条件。结果表明，弯曲夹层梁存在四种本征模态。对简支梁的自由振动进行了数值分析。研究了夹层结构设计参数对本征模态及其相应频率的影响。

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Free Vibration of High-Order Curved Sandwich Beams

A high-order model for free vibrations of singly curved sandwich beams is presented. The model takes into account the transverse flexibility of the sandwich core while the faces of the sandwich are treated as thin beams. Linear equations of motion as well as the natural boundary conditions are derived. It is shown for the curved sandwich beams, that there exist four eigen modes. A numerical analysis of free vibration of the simply supported beams is carried out. Effects of design parameters of the sandwich constituents on the eigen modes and their appropriate frequencies are investigated.

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Damage Initiation and Prediction in Composites, Sandwich Structures and Thermal Barrier Coatings

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