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从线性粘性弹性向屈服的机械激活过渡:基于相关性的统一
Maxim S Arzhakov1, Irina G Panova1, Aleksandr A Kiushov1
1Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia.
Polymers
|October 16, 2025
概括
柔性材料中的机械激活过渡 (MAT) 是使用主曲线统一的. 这种方法在各种材料 (如塑料,泡和糊) 中显示出一致的产量标准.
科学领域:
- 材料科学 材料科学 材料科学
- 类风病学 类风病学 类风病学
- 固体力学 固体力学是什么
背景情况:
- 机械激活过渡 (MAT) 对柔性材料的行为至关重要,它弥合了线性粘性弹性和屈服.
- 这种过渡是由比例极限 (E0, ε0) 和收益率点 (Ey, εy) 定义的,影响宏观材料特性.
研究的目的:
- 确定散装塑料和聚合物泡中MAT参数的定量相关性.
- 开发一个统一的框架来描述在不同材料类的MAT区域内的机械反应.
主要方法:
- 确定E0, ε0, Ey和 εy之间的定量相关性.
- 通过将应力-张力数据重新计算成缩小坐标来构建主曲线.
- 通过将基于土壤的面粉和塑性变形的计算机模拟数据纳入研究结果的概括.
主要成果:
- 确定了收益标准:E0/Ey = 1.55 ± 0.15 和 εy/ε0 = 2.1 ± 0.2.
- 在 MAT 区域内成功统一机械反应,使用塑料,泡,糊剂和虚拟模型的主曲线.
- 提出了一种算法,用于快速分析MAT区域内的塑料系统中的机械反应.
结论:
- 在MAT区域内的机械反应可以在各种材料中统一,包括聚合物,泡和糊.
- 主曲线方法提供了一种通用方法,用于理解和预测在过渡到产量的过程中材料的行为.
- 拟议的方法提供了分析塑料系统的进步,并概述了限制和未来的潜力.
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