Optimization of Mechanical Loaded Lattice Structures by Orientating their Struts Along the Flux of Force
Optimization of Mechanical Loaded Lattice Structures by Orientating their Struts Along the Flux of Force
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DOI：
10.1016/j.procir.2013.09.031
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
G. Reinhart;S. Teufelhart
中科院分区：
文献类型：
--
作者：
G. Reinhart;S. Teufelhart
像选择性激光熔化(SLM)这样的附加层制造(ALM)工艺由于具有很高的几何柔性，在制造轻质元件方面显示出巨大的潜力。因此，特别是介观方法具有一些非常有利的性质，如高硬度和强度与低质量相结合。这些结构的周期性组合并不理想，因为在支撑内部会出现弯曲或剪切等不利荷载情况。相反，应该只出现推力和拉力。为了达到这种状态，必须调整结构的方向，以避免弯曲力，或者至少将弯曲力降至最低。这可以通过沿可用设计空间内的力通量确定单个支柱的方向来实现。为此，已经开发了一种程序，使其能够使结构的过程适应给定部件内的力通量。
Additive Layer Manufacturing (ALM) processes like Selective Laser Melting (SLM) show a great potential for the fabrication of lightweight components due to their high geometric flexibility. Thereby, especially mesoscopic approaches feature some very advantageous properties like high stiffness and strength combined with low masses. A periodical build-up of these structures is not ideal, because of the appearance of unfavorable load cases like bending or shearing inside the struts. Rather, only push and pull forces should appear. To reach this state, the course of the structure has to be adapted in order to avoid bending forces or at least to minimize them. This can be achieved by the orientation of the single struts along the flux of force inside the available design space. For this purpose, a procedure has been developed, which makes it possible to adapt the course of a structure to the flux of force inside a given part.