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首页> 外文期刊>International journal of design engineering >Effect of thickness ratio on the slip damping of jointed aluminium cantilever beams
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Effect of thickness ratio on the slip damping of jointed aluminium cantilever beams

机译：厚度比对节理铝悬臂梁滑移阻尼的影响

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摘要

Estimating damping in structures made of different materials is one of the biggest challenges in the field of structural dynamics. Significant weight savings and good mechanical as well as damping properties can make aluminium a potential material for most of the engineering applications especially in aerospace, automotive and manufacturing industries. This paper summarises the effect of thickness ratio on the mechanism of slip damping in jointed aluminium cantilever beams with riveted joints. The solution considers one-dimensional dynamic analysis using the finite element approach for the Euler-Bernoulli beam model. The cubic shape functions are considered for the transverse vibration of the beam in terms of nodal variables. Experiments are conducted for validating the numerical results. The results establish that the damping in jointed beams of lower thickness ratio can be appreciably improved using larger cantilever length and rivet diameter.
机译：估算由不同材料制成的结构中的阻尼是结构动力学领域的最大挑战之一。显着的重量减轻以及良好的机械和阻尼特性可使铝成为大多数工程应用的潜在材料，尤其是在航空航天，汽车和制造业。本文总结了厚度比对铆接节理铝悬臂梁滑移阻尼机理的影响。该解决方案考虑了使用有限元方法对Euler-Bernoulli梁模型进行一维动态分析。就节点的变量而言，三次函数被考虑用于梁的横向振动。进行实验以验证数值结果。结果表明，使用较大的悬臂长度和铆钉直径，可以显着改善厚度比较小的节理梁中的阻尼。

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