Finite element modeling of tessellated beams
Finite element modeling of tessellated beams
复制标题
镶嵌梁的有限元建模
DOI：
10.1016/j.jobe.2021.103586
复制
发表时间：
2022
影响因子：
6.4
通讯作者：
Elhami-Khorasani, Negar
中科院分区：
文献类型：
--
作者：
Abdelmoneim Elsayed, Mohamed Ezz;Crocker, Grace F.;Ross, Brandon E.;Okumus, Pinar;Kleiss, Michael Carlos;Elhami-Khorasani, Negar
镶嵌式结构建筑（TeSA）系统由重复的瓷砖组成，这些瓷砖可以相互连接，设计成具有承载能力，并且美观。TeSA系统在承受极端载荷时可以将损坏定位到少数瓷砖，可以促进更容易或更快的可修复性，并有助于恢复。本研究探讨简支TeSA梁的数值模拟。进行了有限元（FE）分析，并使用中密度纤维板（TESA）制成的梁的实验结果进行了验证。FE分析包括瓷砖之间的间隙和相互作用。结果表明，接触特性和瓦间间隙大小影响TeSA梁的荷载-位移关系和应变。接触性能被捕获的压力过闭合关系，这需要使用从测试中获得的全球负载-位移响应进行校准。几何非线性的引入对结果没有显著影响。分析了不同瓦间摩擦系数、荷载和支座宽度、泊松比和高宽比的梁。结果表明，在相同的几何尺寸下，TeSA梁的刚度小于实心梁.这项研究的结果提供了对TeSA结构的行为和建模的见解。
Tessellated Structural-Architectural (TeSA) systems are composed of repeated tiles that can interconnect, be designed to have load carrying capacity, and are aesthetically pleasing. TeSA systems may localize damage to few tiles when subjected to extreme loads, may facilitate easier or faster reparability, and contribute to resilience. This research investigates numerical modeling of simply supported TeSA beams. Finite Element (FE) analysis was performed and the results were validated using experiments of TeSA beams made of Medium Density Fiberboard (MDF). The FE analysis incorporated gaps and interaction between tiles. The results showed that contact properties and gap size between tiles affected the calculated load-displacement relationship and strain of the TeSA beam. Contact properties were captured by a pressure-overclosure relationship, which required calibration using the global load-displacement response obtained from testing. Incorporation of geometric nonlinearity did not affect the results significantly. Beams with varying friction coefficient between tiles, load and support bearing width, Poisson's ratio and aspect ratios were analyzed. The results showed that TeSA beams had smaller stiffness than solid beams with similar dimensions. The outcomes of this research provide insights on the behavior and modeling of TeSA structures.
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DOI：
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