ANALYSIS OF OPTIMIZED MANHOLE COVERS MADE OF GLASS-REINFORCED POLYESTER (SMC) THROUGH BENDING TESTS AND FINITE ELEMENT SIMULATIONS

M. S. Temіrhan
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Abstract

This scientific article is devoted to the study and modeling of composite manhole covers made of polyester fiberglass, which are an alternative to traditional metal covers. These substitutes were introduced due to the problems associated with corrosion and theft of steel and cast iron manhole covers, as well as their insufficient resistance to chemicals. Manhole covers made from fiber reinforced plastic have a number of advantages over traditional metal covers. They provide a high strength-to-weight ratio, making them easy and comfortable to install. This material also has a high resistance to corrosion, which greatly extends its service life. Despite the advantages of composite manhole covers, studies related to their mechanical testing and simulations remain insufficient. This article presents the results of a study in which a manhole cover was made from two layers of polyester sheet press material using an additional stiffener. Then, bending tests were carried out, and the results were analyzed using finite element method (FEM) simulation. The purpose of this study was to confirm the validity of the model built for composite manhole covers, as well as to compare the results with experimental data on deformations. The results obtained are of great practical importance for the further development and optimization of the design of composite manhole covers, as well as for improving their reliability and durability.
通过弯曲试验和有限元模拟分析了优化后的玻璃钢(smc)井盖
本文对聚酯玻璃纤维复合井盖进行了研究和建模,这是一种传统金属井盖的替代品。这些替代品的引入是由于钢和铸铁井盖的腐蚀和盗窃问题,以及它们对化学品的抵抗力不足。由纤维增强塑料制成的井盖与传统金属盖相比具有许多优点。它们提供高强度重量比,使它们易于安装和舒适。这种材料还具有很高的耐腐蚀性,大大延长了其使用寿命。尽管复合井盖具有诸多优点,但对其力学性能的测试和模拟研究仍然不足。本文介绍了一项研究的结果,其中一个井盖是由两层聚酯片压材料使用一个额外的加强。然后进行了弯曲试验,并对试验结果进行了有限元模拟分析。本研究的目的是验证所建立的复合井盖模型的有效性,并将结果与实验数据进行比较。所得结果对复合井盖的进一步开发和优化设计,提高其可靠性和耐久性具有重要的现实意义。
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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