在经过热处理后,对不同变态煤的机械性能进化规律的数值模拟研究
Xun Zhang1,2, Hongyu Lai3, Ge Huang4
1College of Mining, Liaoning Technical University, Fuxin, 123000, Liaoning, China.
Scientific reports
|April 8, 2024
概括
煤炭 是一种煤炭.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
背景情况:
- 温度显著影响煤炭的机械性能.
- 了解热损伤对于煤矿安全至关重要.
研究的目的:
- 研究温度对煤炭结构和机制的影响.
- 分析煤炭不同程度的变形.
主要方法:
- 使用PFC2D软件模拟热处理和压缩.
- 分析了三个具有不同变形度的煤炭样本.
主要成果:
- 低阶煤炭显示早期的热裂变;高阶煤炭更稳定.
- 低级煤炭的强度在135°C以下下降;中级煤炭在135°C之后下降.
结论:
- 热损伤显著改变了煤炭的机械特性和故障模式.
- 这项研究对于防止煤矿灾难至关重要.
相关概念视频
01:27Thermal expansion and Thermal stress: Problem Solving
1.2K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in...
1.2K
01:18Mechanical Characteristics of Steel
571
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...
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...
571