Garbowski Tomasz, Gajewski Tomasz, Grabski Jakub Krzysztof
Institute of Structural Analysis, Poznan University of Technology, Piotrowo Street 5, 60-965 Poznań, Poland.
Institute of Applied Mechanics, Poznan University of Technology, Jana Pawła II Street 24, 60-965 Poznań, Poland.
Materials (Basel). 2020 Aug 27;13(17):3791. doi: 10.3390/ma13173791.
In a description of materials for orthotropic panels with a soft and/or corrugated core, it is important to correctly determine all constitutive parameters. In laboratory practice, the determination of transverse shear modulus is often overlooked. This paper presents a method for determining this property based on a plate torsion test and a correctly formulated analytical description. It has been proved that the transverse shear effect in some cases cannot be omitted because it significantly influences the mechanical behavior of corrugated board. The method of transverse shear modeling used so far can be modified to eliminate dimensionless, physically unjustified coefficient and replace them with coefficients that have a physical basis. It is shown here that such modification leads to results with lower error. The effective modeling of transverse shear effects enables a more conscious design of corrugated board structures, where the final goal is to obtain packaging with high strength and durability but low material consumption.
在描述具有柔软和/或波纹芯的正交各向异性板的材料时，正确确定所有本构参数非常重要。在实验室实践中，横向剪切模量的测定常常被忽视。本文提出了一种基于板扭转试验和正确公式化的分析描述来测定该性能的方法。已经证明，在某些情况下横向剪切效应不能忽略，因为它会显著影响波纹板的力学行为。到目前为止所使用的横向剪切建模方法可以进行修改，以消除无量纲的、物理上不合理的系数，并将它们替换为具有物理基础的系数。此处表明，这种修改会使结果具有更低的误差。横向剪切效应的有效建模能够更合理地设计波纹板结构，最终目标是获得高强度、耐用但材料消耗低的包装。
