通过RSM-GA合的高效和坚固的晶体可塑性参数识别:适用于AZ31合金,具有双模非基底纹理
1College of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, China.
Materials (Basel, Switzerland)
|March 14, 2026
概括
本研究引入了一种有效的方法,通过结合响应表面模型 (RSM) 和遗传算法 (GA) 来识别晶体可塑性模型的材料参数. 该方法使用宏观应力-应变数据和微观合金双胞胎数据准确校准参数.
科学领域:
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
- 机械工程 机械工程
背景情况:
- 晶体可塑性构成模型需要精确的材料参数来进行准确的模拟.
- 传统的校准方法通常仅依赖于宏观数据,忽视微观实验数据.
- 整合微尺度数据,如双胞胎体积分数,可以提高模型的准确性,但会带来校准挑战.
研究的目的:
- 开发一种计算效率高的优化程序,用于在晶体可塑性模型中识别材料参数.
- 将响应表面模型 (RSM) 与用于多目标参数校准的遗传算法 (GA) 结合起来.
- 利用宏观压力-应变数据和微观结对数据来改进参数识别.
主要方法:
- 一种新的优化程序,将响应表面模型 (RSM) 和遗传算法 (GA) 结合起来.
- 多目标训练使用34个宏观真实应力-应变数据点 (RD和TD) 和4个微观{10-12}延伸双 (ET) 体积分数据.
- 通过为宏观和微观数据量身定制权重来优化目标函数.
主要成果:
- 提议的优化方法迅速汇聚到一个稳定的健身值~80在200次代.
- 通过粘性塑料自相一致 (VPSC) 模拟AZ31合金的拉力变形来验证.
- 获得的材料参数证明了对预测机械反应,变形机制,{10-12} ET体积分数演变和纹理演变的良好有效性和适用性.
结论:
- 结合的RSM-GA方法为晶体可塑性材料参数识别提供了一种高效和准确的方法.
- 将微尺度的结合数据与宏观压力-应变数据相结合,可以显著改善模型校准.
- 验证的参数对于模拟AZ31合金的机械行为和微观结构演变是有效的.
更多相关视频
06:00Optimization of the Epimedii Folium Mutton-Oil Processing Technology and Testing Its Effect on Zebrafish Embryonic Development
Published on: March 17, 2023
943
07:26High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment
Published on: July 18, 2017
12.3K
相关概念视频
Response Surface Methodology
776
Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
The process of RSM involves several key steps:
776
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
383
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
383
