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Effect of the hole size and the open area value on the effective Young's modulus of perforated sheets with a right pattern of cylindrical holes
DOI:
https://doi.org/10.24425/ace.2023.145264Abstract
Perforated sheets are materials which - maintaining good mechanical properties - are characterized by reduced mass in comparison to full sheets. Their elastic properties are important features that are considered in the context of these materials’ design applications. Compared to full sheets, they are characterized by reduced mass while simultaneously preserving good strength properties. This article presents an experimental and numerical analysis of the effect of key parameters of the hole mesh (open area, hole diameter and orientation relative to the direction of greatest hole concentration) in association with the type of material and sheet thickness t on the value of the effective Young’s modulus of perforated sheet. A significant influence of open area (the share of holes in the sheet, as a percentage) and orientation angle was determined. On the basis of experimental results and computer simulations, a mathematical dependency allowing for calculation of this parameter’s value was proposed. The average deviation of calculated values from experimental is less than 4%.References
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