热力学循环动力学建模用于导管断裂
Shankun Liu1, Fei Han1, Xiaoliang Deng2
1State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, International Research Center for Computational Mechanics, Dalian University of Technology, Dalian 116023, China.
Materials (Basel, Switzerland)
|June 10, 2023
概括
本研究介绍了一种基于围动力学的模型,用于高温柔性骨折,提高计算效率. 该模型准确地模拟了超合金裂变,与实验数据保持一致,并验证了其有效性.
科学领域:
- 计算力学是计算力学.
- 材料科学 是一种材料科学.
- 断裂力学 断裂力学 断裂力学
背景情况:
- 高温应用对材料完整性提出了挑战,原因是柔性断裂.
- 精确的模拟柔性断裂对于结构安全和性能至关重要.
- 现有的计算方法在高温下模拟复杂的断裂现象时可能面临局限性.
研究的目的:
- 提出一个高效和准确的建模方法,利用周动力学在高温下对柔性骨折进行建模.
- 开发一个计算框架,将周动力学与经典连续力学相结合,以降低成本.
- 通过数值模拟和实验比较来验证拟议的模型.
主要方法:
- 采用了热弹性合模型,结合了周动力学和古典连续力学.
- 一个塑料构成型的围动力学键的模型被开发,以捕捉柔性骨折.
- 一个代算法被引入用于柔性断裂计算.
- 在800°C和900°C的超合金结构上进行了数值模拟.
主要成果:
- 拟议的模型成功模拟了在高温下超级合金中的柔性断裂过程.
- 通过将周动力学计算定位到故障区域来降低计算成本.
- 模拟的裂模式与实验观察结果非常相匹配.
- 该模型与实验数据有很强的一致性,验证了其预测能力.
结论:
- 开发的基于围动力学的建模方法对于模拟高温柔性骨折是有效的.
- 周动力学与连续力学的整合提供了一个有效的方法来进行断裂分析.
- 该模型复制实验裂纹模式的能力验证了其在工程环境中的适用性.
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