纸张压缩试验的数值和实验研究
Leszek Czechowski1, Paweł Pełczyński2, Maria Bieńkowska2
1Department of Strength of Materials, Lodz University of Technology, Stefanowskiego Street 1/15, 90-537 Lodz, Poland.
Materials (Basel, Switzerland)
|December 23, 2023
概括
这项研究确定了纸张样本的最大压缩负载,用实验数据验证了数值模型. 这些发现对于设计强大的波纹纸板包装和评估负载能力至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 固体力学 固体力学是什么
背景情况:
- 了解在轴承负载下纸张的机械行为对于包装应用至关重要.
- 在压缩下准确预测材料故障对于结构完整性至关重要.
- 波纹纸板广泛用于包装,需要对其压力强度进行详细分析.
研究的目的:
- 用实验来确定不同高度的纸样的最大压缩负载.
- 使用有限元法 (FEM) 对实验结果进行数值模型的验证.
- 为波纹纸板包装的机械性能和负载能力计算提供实际数据.
主要方法:
- 在不同高度的纸样上进行了实验压缩测试.
- 数字模拟使用格林 - 拉格兰吉的非线性方程,用于大位移和应变.
- 希尔的异质性理论被用来模拟正向性材料的渐进性失效.
- 牛顿-拉普森算法促进了非线性计算和融合.
- 图像分析跟踪了压缩纸样本的形状变化.
主要成果:
- 实验数据提供了纸张样品的最大压缩负载.
- 经过验证的FEM模型准确地预测了轴向压缩下的纸张行为.
- 该研究证明了数值模拟在复制实验结果中的有效性.
- 对样本形状变化的分析提供了对故障机制的见解.
结论:
- 开发的数值模型准确地反映了实验压缩测试结果.
- 这些发现直接适用于计算波纹纸板的机械性能.
- 这项研究有助于设计坚固的纸板包装,并评估其运输和储存的承载能力.
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