ASA的温度依赖性塑料行为:约翰逊-库克塑性模型校准和FEM验证
Peter Palička1, Róbert Huňady1,2, Martin Hagara1
1Department of Applied Mechanics and Mechanical Engineering, Faculty of Mechanical Engineering, Technical University of Košice, 042 00 Košice, Slovakia.
Materials (Basel, Switzerland)
|February 13, 2026
概括
这项研究校准了亚克利利尼烯烯烯酸盐 (ASA) 的温度依赖的约翰逊-库克 (J-C) 塑性模型,低于其玻璃过渡温度. 校准模型准确地预测了ASA.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 聚合物科学 聚合物科学
背景情况:
- 由于其耐用性,乙烯烯酸 (ASA) 对于户外应用至关重要.
- 为了进行可靠的模拟,需要准确地描述ASA的取决于温度的塑料行为.
- 现有的模型缺乏在不同的热条件下对ASA的足够数据.
研究的目的:
- 为了对ASA进行温度依赖的约翰逊-库克 (J-C) 可塑性模型进行校准.
- 为了研究ASA在实际温度范围内 (-10°C至+65°C) 的塑料反应.
- 为ASA组件的模拟驱动设计提供可靠的材料参数.
主要方法:
- 在 -10°C,+23°C和+65°C的ASA上进行了单轴拉伸试验,拉伸速率为0.01s-1 .
- 在 MATLAB R2024b 中使用最小平方优化识别了 J-C 模型参数 (A,B,n).
- 通过有限元模拟在Abaqus 2024中验证了校准的J-C模型.
主要成果:
- 对J-C模型参数进行了成功校准,显示了与实验应力-应变曲线的良好一致.
- 使用校准的J-C模型进行的有限元模拟与所有测试温度的实验数据密切匹配.
- J-C模型有效地捕捉了ASA的应变硬化行为.
结论:
- 这项研究为ASA.提供了一个经过验证的,取决于温度的J-C可塑性模型.
- 开发的方法和参数集使得ASA的精确数值模拟成为可能.
- 这项工作支持在热变化下改进ASA的设计,成型分析和结构评估.
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