在非关联流规则 (非AFR) 下,对AA5754-H111 (Al-Alloy) 具有基于线性转换的无otropic Drucker 收益率函数的Earing 预测
Xiang Gao1,2, Zhen Zhang3, Zhongming Xu1
1College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China.
Materials (Basel, Switzerland)
|August 10, 2024
概括
anisotropic Drucker 模型准确地预测了合金 5754-H111 的产量行为,特别是在 30 MPa 的塑料工作中. 塑料潜能函数在模拟中显著影响耳朵现象预测.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 计算力学 计算力学 计算力学
背景情况:
- 了解合金的产量行为对于制造工艺至关重要.
- 准确的材料建模对于预测可塑性和防止诸如耳孔之类的缺陷至关重要.
研究的目的:
- 为了评估对合金5754-H111产量行为的异型德鲁克模型的预测准确度.
- 为了研究不同产量函数和塑料电位函数对预测筒图中耳朵现象的影响.
主要方法:
- 利用一种异构的德鲁克模型研究各种压力条件和塑料工作水平下的产量行为.
- 进行了有限元分析 (FEA) 用于气绘图模拟.
- 为了预测收益率,比较了Drucker,Hill48和Yld91等异构型模型.
- 模拟耳朵行为,使用不同组合的异型和同型收益率和塑料潜能函数 (AYAPP,AYIPP,IYAPP).
主要成果:
- 不同类型的德鲁克模型在30MPa的塑料工作中显示出对30MPa塑料工作的产量行为的最高预测准确度.
- 无论是 anisotropic Drucker 和 Yld91 模型都准确地预测了合金的产量行为.
- 在轴对称有限表示 (AFR) 下的FEA未能准确预测耳朵的位置和高度.
- 不同类型的德鲁克模型在非AFR条件下准确预测了听力现象.
- 发现塑料电位函数在预测听行为方面比收益率函数更为关键.
结论:
- anisotropic Drucker 模型是一个可靠的工具,用于预测合金 5754-H111.11 的产量行为.
- 准确预测耳现象需要仔细选择产量和塑料潜在功能的选择,后者更有影响力.
- 建议对非AFR模拟和先进材料模型进行进一步的研究,以准确地预测可塑性.
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