摩擦动旋转辅助单点增量成型商业纯板的热机械数值模拟
Marcin Szpunar1, Tomasz Trzepieciński2, Robert Ostrowski3
1Doctoral School of the Rzeszów University of Technology, 12 Powstancow Warszawy Ave., 35-959 Rzeszow, Poland.
Materials (Basel, Switzerland)
|July 13, 2024
概括
板的摩擦旋辅助单点增量成型 (SPIF) 是使用有限元方法建模的. 经过验证的模型准确地预测了成型力和温度,这对于优化这种灵活的金属成型过程至关重要.
科学领域:
- 材料科学与工程 材料科学与工程
- 制造过程 制造过程 制造过程
- 计算力学 计算力学 计算力学
背景情况:
- 单点增量成型 (SPIF) 在金属成型中提供了高灵活性和大变形能力.
- 合金越来越多地用于需要高性能和可塑性的行业.
- 精确的热力学过程建模对于优化SPIF参数至关重要.
研究的目的:
- 开发和验证一个可靠的基于有限元素 (FE) 的热力学模型,用于轮轮辅助的板SPIF.
- 分析0.4毫米厚的商业纯板在热成型的形圆时的可成型性.
- 调查网格大小对形成力预测准确性的影响.
主要方法:
- 使用Abaqus/Explicit (2019版) 的数值建模来模拟SPIF期间的热力学行为.
- 将复杂的热相互作用 (包括摩擦热生成) 纳入FE模型.
- 使用FLIR T400红外摄像机测温和ARGUS系统进行厚度分析进行实验验证.
主要成果:
- 一个1毫米的网格尺寸显示出与实验总成形力最好的一致性,预测误差为3%.
- 该FE模型预测了最大接触区温度 (157°C),误差为1.3%.
- 该模型准确地预测了画片中的均墙壁厚度,在最小 (3.7%) 和最大 (5.9%) 墙壁厚度上略有高估.
结论:
- 开发的热力学FE模型为模拟板的摩擦动旋转辅助SPIF提供了可靠的工具.
- 该模型准确地捕捉了形成力,温度分布和厚度变化,这对于过程优化至关重要.
- 这项研究有助于推进元件的灵活和高效的制造工艺.
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