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Metal Foam as a Combination of Lightweight Engineering and Damping

机译:金属泡沫是轻型工程与阻尼的结合

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The present paper highlights results from the priority program "Cellular Metals" of the Deutsche For-schungsgemeinschaft (DFG SPP 1075). Machine tool construction calls for subassemblies with reduced weight while retaining excellent dynamic properties. Modern frame components do always meet required static stiffness but often display oscillation problems due to low component wall thicknesses. Breaking down solid steel structure into wide-area sandwich designs such as steel-aluminum foam-steel panels good static properties to be combined with excellent properties since these sandwiches have 30 to 40 times the flexural strength due to their major geometrical moment of inertia in relation to adequate-mass steel sheet metals. In addition, the foam core dampens oscillations. Studies on foamed steel sections indicate that 2 to 3 times damping is likely in relation to unfoamed steel sections. These benefits were the motivation for the Chemnitz Metal Foam Center to accelerate development of extremely large-format sandwiches with dimensions of 1,500 x 1,000 mm~2. Dedicating efforts to this new field of study has provided more favourable conditions for research of metal foams.
机译:本文重点介绍了德意志联邦理工学院优先项目“蜂窝金属”(DFG SPP 1075)的结果。机床的结构要求组件轻量化,同时又要保持出色的动态性能。现代框架部件始终满足所需的静态刚度,但由于部件壁厚低,经常会出现振动问题。将固态钢结构分解为大面积的夹心设计,例如钢-铝泡沫-钢面板,具有良好的静态性能,同时又具有出色的性能,因为这些夹心由于其主要的几何惯性矩而具有30至40倍的抗弯强度到足够质量的钢板。另外,泡沫芯抑制振动。对泡沫钢截面的研究表明,相对于非泡沫钢截面,阻尼可能会达到2到3倍。这些好处是开姆尼茨金属泡沫中心加速开发尺寸为1,500 x 1,000 mm〜2的超大型三明治的动力。致力于这一新的研究领域为金属泡沫的研究提供了更有利的条件。

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