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Digital analysis of the geometric variability of bamboo poles in bending

机译:竹竿弯曲时几何变化的数字分析

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The importance of sustainable materials in the building industry has grown during the last decades due to the negative impact that industrialised materials have caused over the environment as a consequence of the rapid increase of urban areas, especially in developing countries. To alleviate this problem, research has focused on the utilisation of bamboo, a ready-to-use natural material with a high potential of playing an important role in the future development of the building industry, however, the limitations of the material have not been properly addressed and therefore, the current use of bamboo in the building industry is negligible. This paper presents a digital approach to analyse the structural effects that the inherent geometric variability causes in bamboo poles subjected to bending effects. In contrast with current methodologies that apply the use of conventional tools to determine average geometric properties of a bamboo pole, this work adopted a combination of material testing and 3D scanning of a series of bamboo elements, in order to define suitable parameters for structural analysis that accurately represents the geometric variability of the poles. The results confirmed that the geometric variability produces significant effects that had not been considered before in the mechanical characterisation of bamboo, and that could not have been possible to identify without the use of digital technology. This work encourages the future development of methodologies that implement the use of digital technology to increase the structural understanding of bamboo and therefore, offer a robust platform for the general implementation of bamboo culms in the building industry.
机译:在过去的几十年中,由于城市地区(尤其是发展中国家)的快速发展,工业化材料对环境造成的负面影响,可持续材料在建筑行业中的重要性日益提高。为了减轻这个问题,研究集中在竹子的利用上,竹子是一种具有很高潜力的即用型天然材料,在建筑业的未来发展中起着重要的作用,然而,该材料的局限性尚未得到解决。适当解决,因此,目前在建筑业中使用竹子微不足道。本文提出了一种数字方法来分析竹子杆遭受弯曲效应时固有的几何变异性引起的结构效应。与目前使用常规工具确定竹竿的平均几何特性的方法相比,这项工作采用了材料测试和一系列竹子元素的3D扫描相结合的方法,以便为结构分析定义合适的参数,准确地表示极点的几何变化。结果证实,几何可变性产生了在竹子的机械表征中未曾考虑过的重大影响,并且如果不使用数字技术就无法确定这种影响。这项工作鼓励了使用数字技术来增加对竹子的结构理解的方法的未来发展,因此,为建筑业中竹子的一般实施提供了一个可靠的平台。

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