Mechanical behavior of FRP sheets reinforced 3D elements printed with cementitious materials
Mechanical behavior of FRP sheets reinforced 3D elements printed with cementitious materials
复制标题
用水泥材料打印的 FRP 片材增强 3D 元件的机械性能
DOI：
10.1016/j.compstruct.2015.08.079
复制
发表时间：
2015-12
影响因子：
6.3
通讯作者：
Zhang, Hanqing
中科院分区：
文献类型：
--
作者：
Feng, Peng;Meng, Xinmiao;Zhang, Hanqing
提出了一种改善3D打印元件的机械性能的方法。3D打印元件是正交各向异性的，其夹层较弱;因此，容易形成，重量轻，强度高的FRP是增强3D打印元件的理想材料。为了研究加固效果，对圆柱试件进行了单轴压缩试验，对梁试件进行了四点弯曲试验。结果表明，用FRP包裹3D打印柱将其破坏模式从脆性变为韧性，使用不同层数和类型的钢筋将其可以承受的峰值载荷增加了1427.2-1792.0%，并将其可以实现的最大变形增加了833.9-1171.3%。对于用FRP加固的3D打印梁，承载力增加了179.6%-604.5%，其中跨处的弯曲挠度增加了40.8%-225.8%。3D打印梁的失效模式受层数和钢筋类型的影响。此外，还进行了有限元分析，以根据最大应力标准模拟3D打印元件的失效模式。结果表明，预测的失效位置与观察到的实验失效位置相对应。根据这项研究，用FRP片材加固的3D打印元件显示出在建筑中未来发展和应用的潜力。
A method to improve the mechanical behavior of 3D-printed elements is presented. 3D-printed elements are orthotropic and weak in their interlayers; thus, FRPs, which are easy-formed, light-weighted and high-strength, are ideal materials to enhance 3D-printed elements. To investigate the reinforcement effect, uniaxial compression tests were conducted on circular column specimens, and four-point flexural tests were conducted on beam specimens. The results indicated that wrapping 3D-printed columns with FRPs changed their failure modes from brittle to ductile, increased the peak loads that they could endure by 1427.2–1792.0% and increased the largest deformations they could achieve by 833.9–1171.3% using different numbers of layers and types of reinforcement. For the 3D-printed beams reinforced with FRPs, the bearing capacities were increased by 179.6–604.5%, and their flexure deflections at their mid-spans were increased by 40.8–225.8%. The failure modes of the 3D-printed beams were affected by numbers of layers and types of reinforcement. Additionally, finite element analyses were conducted to simulate the failure modes of the 3D-printed elements based on the maximum stress criterion. The results showed that the predicted failure locations corresponded with the experimental failure locations observed. According to this study, 3D-printed elements reinforced with FRP sheets showed potential for future development and applications in construction.
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DOI：
--
发表时间：
2012-08
期刊：
--
影响因子：
--
作者：
Brian Evans
通讯作者：
Brian Evans
影响因子：
15.3
作者：
T. Wegrzyn;M. Golding;R. Archer
通讯作者：
T. Wegrzyn;M. Golding;R. Archer
DOI：
--
发表时间：
2013-02
期刊：
--
影响因子：
--
作者：
Hod Lipson;M. Kurman
通讯作者：
Hod Lipson;M. Kurman
DOI：
--
发表时间：
2005
期刊：
--
影响因子：
--
作者：
R. Buswell;R. Soar;Martyn Pendlebury;A. Gibb;F. Edum-Fotwe;T. Thorpe
通讯作者：
R. Buswell;R. Soar;Martyn Pendlebury;A. Gibb;F. Edum-Fotwe;T. Thorpe
影响因子：
7.4
作者：
Gross, Bethany C.;Erkal, Jayda L.;Spence, Dana M.
通讯作者：
Spence, Dana M.