Polymer Micro-Lattice buffer structure Free Impact absorption

Louis Catar, Ilyass Tabiai, David St-Onge
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Abstract

The uncrewed aerial systems industry is rapidly expanding due to advancements in smaller electronics, smarter sensors, advanced flight controllers, and embedded perception modules leveraging artificial intelligence. These technological progress have opened new indoor applications for UAS, including warehouse inventory management, security inspections of public spaces and facilities, and underground exploration. Despite the innovative designs from UAS manufacturers, there are no existing standards to ensure UAS and human safety in these environments. This study explores developing and evaluating micro-lattice structures for impact resistance in lightweight UAS. We examine patch designs using Face-Centered Cubic (FCC), Diamond (D), Kelvin (K), and Gyroid (GY) patterns and detail the processes for creating samples for impact and compression tests, including manufacturing and testing protocols. Our evaluation includes compression and impact tests to assess structural behavior, revealing the influence of geometry, compactness, and material properties. Diamond and Kelvin patterns were particularly effective in load distribution and energy absorption over the compression tests. Impact tests demonstrated significant differences in response between flexible and rigid materials, with flexible patches exhibiting superior energy dissipation and structural integrity under dynamic loading. The study provides a detailed analysis of specific energy absorption (SEA) and efficiency, offering insights into optimal micro-lattice structure designs for impact resistance in lightweight UAS applications.
聚合物微晶格缓冲结构 自由冲击吸收
由于小型电子设备、更智能的传感器、先进的飞行控制器和利用人工智能的嵌入式感知模块的进步,无人驾驶航空系统行业正在迅速扩大。这些技术进步为无人机系统开辟了新的室内应用领域,包括仓库库存管理、公共场所和设施的安全检查以及地下勘探。尽管无人机系统制造商进行了创新设计,但目前还没有确保无人机系统和人类在这些环境中安全的标准。本研究探讨了开发和评估轻型无人机系统抗冲击的微格结构。我们研究了使用面心立方(FCC)、钻石(D)、开尔文(K)和甲状腺(GY)图案的补丁设计,并详细介绍了创建用于冲击和压缩测试的样品的过程,包括制造和测试协议。我们的评估包括压缩和冲击测试,以评估结构行为,揭示几何形状、密实度和材料特性的影响。在压缩试验中,菱形和开尔文图案在负载分布和能量吸收方面尤为有效。冲击测试表明,柔性材料和刚性材料在响应上存在显著差异,柔性补丁在动态加载下表现出更优越的能量耗散和结构完整性。该研究详细分析了比能量吸收(SEA)和效率,为轻型无人机应用中抗冲击的最佳微晶格结构设计提供了启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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