模拟AZ31 Mg合金的摩擦接
Sili Feng1, Zhe Liu2, Renlong Xin1,3
1College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
Materials (Basel, Switzerland)
|October 26, 2024
概括
一个新的模型准确地预测了合金中的摩擦动接温度. 优化接和旋转速度对于控制热量和提高接质量至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 接技术 接技术
背景情况:
- 摩擦接 (FSW) 对于连接 (Mg) 合金至关重要.
- 接温度对Mg合金接头的残余应力和微观结构产生重大影响.
- 了解热量产生是优化FSW流程的关键.
研究的目的:
- 为合金的FSW开发一个修改的移动热源模型.
- 准确预测整个接过程中的温度分布,包括入.
- 研究接和旋转速度对温度场的影响.
主要方法:
- 开发了一种改进的移动热源模型,考虑了摩擦剪切应力变化.
- 该模型用于模拟整个FSW过程.
- 实验温度测量被用来验证模拟结果.
主要成果:
- 该模型的准确性很高,实验和模拟的高峰温度之间最大10%的相对误差.
- 接温度随着更高的旋转速度或较低的接速度在较低的过程参数显著增加.
- 速度对温度的影响在较高的接和旋转速度下减少.
结论:
- 经过验证的模型为Mg合金的FSW提供了准确的温度预测.
- 控制接和旋转速度对于管理热量输入至关重要.
- 结果提供了通过优化热量产生来改善Mg合金接质量的指导方针.
相关概念视频
01:24Bearings: Problem Solving
Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
01:21Rolling Resistance
When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...