用玻璃纤维织物加固石膏夹芯板的线性准静态和振动响应数值分析

IF 1.5 4区 材料科学 Q4 MATERIALS SCIENCE, COMPOSITES
A. Wahrhaftig, R. Carvalho, L. Brito
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引用次数: 0

摘要

为了扩大灰泥作为粘合剂的使用范围,研究了由两面用玻璃纤维织物加固的灰泥和挤塑聚苯乙烯泡沫塑料芯组成的夹层板的机械性能。利用基于有限元法的软件,计算模型被用来模拟四点弯曲试验。研究了两种情况:假设材料的应力-应变曲线为线性,以及采用非线性几何分析。这些计算模拟可以确定加载极限和垂直位移。在确定挠曲刚度后,通过分析程序计算了振动响应。这项研究证明,石膏面上的加强筋厚度和体积越大,夹芯板的承重能力越强,位移越小,抗牵引和抗压能力越强,刚度越大。值得注意的是,复合面上钢筋厚度和体积含量分别比参考面板高出 24.71% 和 66.67% 的面板 3 显示出最佳的静态和振动响应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Numerical Analysis of a Linear Quasi-Static and Vibrational Response of Gypsum Sandwich Panels Reinforced with Fiberglass Fabrics

Numerical Analysis of a Linear Quasi-Static and Vibrational Response of Gypsum Sandwich Panels Reinforced with Fiberglass Fabrics

To expand plaster utilization as a binder, mechanical behavior of sandwich panels consisting of two faces of plaster reinforced with fiberglass fabrics and a core of extruded polystyrene foam was studied. Using software based on the finite element method, computational models were utilized to simulate the four-point bending test. Two scenarios were examined: assuming a linear stress-strain curve for the material and employing nonlinear geometric analysis. These computational simulations allowed to determine loading limits and vertical displacements. After determining the flexural stiffness, the vibration response was calculated via an analytical procedure. This investigation proved that sandwich panels with greater thicknesses and volumes of reinforcements on the plaster faces exhibited greater load-bearing capacity, smaller displacements, greater resistance to traction and compression, and greater stiffness. Notably, panel 3, which had the thickness and volume content of reinforcement in the composite faces 24.71 and 66.67% higher, respectively, than reference panel, presented the best static and vibrational responses.

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来源期刊
Mechanics of Composite Materials
Mechanics of Composite Materials 工程技术-材料科学:复合
CiteScore
2.90
自引率
17.60%
发文量
73
审稿时长
12 months
期刊介绍: Mechanics of Composite Materials is a peer-reviewed international journal that encourages publication of original experimental and theoretical research on the mechanical properties of composite materials and their constituents including, but not limited to: damage, failure, fatigue, and long-term strength; methods of optimum design of materials and structures; prediction of long-term properties and aging problems; nondestructive testing; mechanical aspects of technology; mechanics of nanocomposites; mechanics of biocomposites; composites in aerospace and wind-power engineering; composites in civil engineering and infrastructure and other composites applications.
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