在Al1050板材单点增量成型中增强/改进成型极限曲线和断裂高度预测
Trung-Kien Hoang1, The-Thanh Luyen2, Duc-Toan Nguyen3
1Faculty of Mechanical Engineering, Thainguyen University of Technology, Thainguyen 250000, Vietnam.
Materials (Basel, Switzerland)
|December 9, 2023
概括
这项研究通过提高成型极限曲线 (FLC) 精度,提高了单点增量成型 (SPIF) 中的缺陷预测. 在模拟中使用可变工具半径的新方法显著减少了Al1050板的断裂预测误差.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 计算力学 计算力学 计算力学
背景情况:
- 单点增量成型 (SPIF) 提供具有成本效益的,不依赖模具的制造,非常适合小批量生产.
- 预测缺陷,特别是断裂,对于SPIF的成功至关重要,但由于材料和形状的复杂性而具有挑战性.
- 数字模拟对于SPIF中预防性缺陷分析至关重要.
研究的目的:
- 调查形成极限曲线 (FLC) 在SPIF模拟期间预测骨折中的作用.
- 开发一种增强的方法,用于构建裂变时形成极限曲线 (FLCF),以改进SPIF缺陷预测.
- 通过对截断的圆部件进行模拟和实验来验证拟议的FLCF增强.
主要方法:
- 使用修改的最大力标准 (MMFC) 构建了Al1050的FLC.
- 从单轴和双轴拉伸变形数据开发了一个图形方法来预测FLCF.
- 提出了一种新的FLCF预测方法,利用SPIF模拟与可变工具半径和应变分析.
- 通过模拟和实验,验证了增强的FLCF模型,通过不同墙角的截断圆部分进行了实验.
主要成果:
- 最初的FLCF预测显示,模拟和实验之间的断裂高度偏差为15.97%,用于截断的圆.
- 基于可变工具半径模拟的新型FLCF预测方法,证明了骨折高度与截断的实验结果的实质性对齐.
- 增强的FLCF模型显著提高了SPIF模拟中断裂预测的准确性.
结论:
- 准确的FLCF预测对于可靠的SPIF模拟和缺陷缓解至关重要.
- 使用可变工具半径模拟的拟议方法为SPIF提供了更精确的FLCF构建方法.
- 这项研究通过改善缺陷预测,扩大其工业适用性来推进SPIF的能力.
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