Branched natural fibrous composites for improved technical components

用于改进技术组件的支化天然纤维复合材料

• 批准号: 128716029
• 负责人: Professor Dr.-Ing. Werner Hufenbach
• 金额: --
• 依托单位: Institut für Leichtbau und Kunststofftechnik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/128716029?language=en
• 关键词: Branched; natural; fibrous; composites; improved

The major goal of this project is the development of structurally optimized, branched fibrous compound structures for technical use as lightweight construction elements with a high load-bearing capacity inspired by hierarchically organized, branched plant structures. The biological role models for these elements are the ramifications of selected plant species with a pronounced fibre-matrix-structure, optimised in the course of biological evolution under various kinds of static and dynamic loads. It could be shown in the project phases 1 and 2 that stem-branch attachments in Dragon trees (Dracaena spp.) and different Freycinetia-species (both arborescent monocotyledons) and branched columnar cacti possess a high potential for transfer into technical adaptation. Further analysis of the hierarchical composition at the branching regions (structuring and multiscale mechanics of branching regions on various hierarchical levels, arrangement and orientation of fibre-/wood-bundles and fibres, internal structure of the wood fibres) and evaluation of the mechanical significance of the specific arrangement of fibre-/wood-bundles and fibres by means of modern state-of-the-art material testing and simulation techniques, allowed to adjust and modify the customised manufacturing processes developed in phase 1 and 2, and to further develop the manufacture of innovative fibrous compound structures inspired by biological models.

该项目的主要目标是开发结构优化的分支纤维复合结构，用于技术用途，作为具有高承载能力的轻质建筑元件，其灵感来自分层组织的分支植物结构。这些元素的生物学作用模型是具有明显纤维基质结构的选定植物物种的衍生物，在各种静态和动态负载下的生物进化过程中进行了优化。在项目第一和第二阶段中可以看出，龙血树（Dracaena spp.）不同的Freycinetia种（木本单子叶植物）和分枝柱状仙人掌具有很高的潜力转移到技术适应。分支区域层次结构的进一步分析（在不同层次上的分支区域的结构化和多尺度力学，纤维束/木材束和纤维的排列和取向，木材纤维的内部结构），以及通过现代最先进的材料测试和模拟技术评估纤维束/木材束和纤维的特定排列的机械意义，允许调整和修改第一阶段和第二阶段开发的定制制造工艺，并进一步开发受生物模型启发的创新纤维复合结构的制造。