用有限元法分析了偏离压痕规则压痕作用下纸板的折叠行为

IF 1.4 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY AIMS Materials Science Pub Date : 2023-01-01 DOI:10.3934/matersci.2023017
Weerayut Jina, S. Nagasawa, Teruyuki Yamamoto, Takaomi Nagumo
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引用次数: 0

摘要

本研究通过发达的成形模拟揭示了折痕偏差行为。利用基于各向同性弹塑性模型的剪切屈服分离阻力和面外起绒阻力,扩展并应用组合阻力模型对折痕纸板180°折叠过程进行了模拟。通过180°折痕过程的实验和仿真,比较了在改变折痕线与凹槽的对中偏差时,白布纸板折痕胀形的偏心率。对比实验变形和仿真,解释了e的偏差对折痕偏差cd的产生有贡献。在折叠试验中,将180°折叠与实验和仿真进行了比较。考虑了褶皱区的轧制孔道加剧了偏差状态。180°折叠仿真结果表明,采用轧制孔道和非轧制孔道时,折痕偏差cd≈2e为理想状态。实验中出现一些浅压痕时,2e < cd < 4e。内部折叠角的模拟结果与实验结果存在较大差异,特别是对于某一浅压痕模型。在模拟中,在假定各向同性的情况下,不进行局部破碎。在模拟中,与实验行为相比,在180°折叠时折痕位置的偏差是充分可预测的。
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Analysis of the folding behavior of a paperboard subjected to indentation of a deviated creasing rule using the finite element method

This study reveals the crease deviation behavior through the developed forming simulation. A combination resistance model was expanded and applied to simulate the 180° folding process of a creased paperboard, using the shear-yield detaching resistance and the out-of-plane fluffing resistance which were based on the isotropic elastro-plastic model. When varying the misalignment of the creasing rule against the groove, the eccentricity of the crease bulging of a white-coated paperboard was compared through the experiment and simulation of the 180° folding process. Comparing the experimental deformation and the simulation, it was explained that the deviation of e contributed to making the crease deviation cd. At the folding test, the 180° folding was compared with the experiment and simulation. The rolling pass of the folded zone was considered to intensify the deviation state. The 180° folding simulation revealed that the crease deviation of cd ≈ 2e was assessed as an ideal condition when using the rolling pass and non-rolling pass. In the case of some shallow indentation in the experiment, 2e < cd < 4e was observed. The inside folded corners were quite different between the simulation and experiment, especially for a certain shallow indentation model. In the simulation, the local crushing was not performed under the assumption of any isotropic properties. In the simulation, the deviation of the creased position at the 180° folding was sufficiently predictable, when compared with experimental behavior.

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来源期刊
AIMS Materials Science
AIMS Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.60
自引率
0.00%
发文量
33
审稿时长
4 weeks
期刊介绍: AIMS Materials Science welcomes, but not limited to, the papers from the following topics: · Biological materials · Ceramics · Composite materials · Magnetic materials · Medical implant materials · New properties of materials · Nanoscience and nanotechnology · Polymers · Thin films.
期刊最新文献
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