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通过分子动力学模拟研究接工具长度对接金属矩阵机械强度的影响
Xuejin Yang1, Rassol Hamed Rasheed2, Sami Abdulhak Saleh3
1College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, 430048, China.
Journal of molecular graphics & modelling
|May 26, 2024
概括
接工具的长度显著影响金属矩阵强度. 较长的工具增加了粒子相互作用和结合,增强了像Young这样的机械性质.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 计算材料科学科学 计算材料科学
背景情况:
- 接工艺对于提高材料性能至关重要.
- 接工具的特性,如长度,影响机械性能.
- 金属矩阵强度是结构完整性的关键因素.
研究的目的:
- 为了研究接工具长度对接铜银 (Cu-Ag) 金属矩阵的机械性能的影响.
- 评估接工具透深度如何影响模和最终强度.
- 为了建立工具长度,粒子相互作用和键形成之间的相关性.
主要方法:
- 使用LAMMPS软件进行分子动力学 (MD) 建模.
- 列纳德-斯电位函数和嵌入式原子模型的应用.
- 通过动能和总能分析验证平衡阶段.
- 应力-张力曲线的分析以确定机械性能.
主要成果:
- 接矩阵的机械强度随着接工具长度 (透深度) 的增加而增加.
- 增加Fe工具的透度从2 Å到8 Å,导致更高的扬模量 (34.360 GPa到38.44 GPa) 和最终强度 (1390.84 MPa到1510 MPa).
- 较长的接工具涉及更多的粒子,从而增加粒子间的粘合和改善机械性能.
结论:
- 接工具的长度是确定接金属矩阵的机械性能的一个重要因素.
- 优化接工具长度可以提高金属结构的机械强度和性能.
- 这种模拟方法为优化各种工业应用中的机械结构提供了宝贵的见解.
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