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相关概念视频

Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

175
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
175
Mechanical Characteristics of Steel01:18

Mechanical Characteristics of Steel

578
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
578

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相关实验视频

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Measurement of the Compressibility of Cell and Nucleus Based on Acoustofluidic Microdevice
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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
PubMed
概括
此摘要是机器生成的。

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.

关键词:
希尔的异构性潜能理论.数字图像分析分析数字图像分析有限元素方法的有限元素方法.纸张强度强度的纸张强度.

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A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System
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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.