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对薄外组件的连续构成模型的开发,在接接头上的性能发生了急剧变化
Zhubin He1, Xianggang Ruan1, Jiangkai Liang1
1State Key Laboratory of High-Performance Precision Manufacturing, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China.
研究人员开发了一种连续构成模型,以准确预测管在水成型应用中的塑料变形. 这种方法考虑了接接头的性能变化,提高了先进运输部件的制造精度.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
- 制造过程 制造过程 制造过程
背景情况:
- 大尺寸薄外元件在先进的运输中至关重要,但由于制造限制,在接接头上表现出性能变化.
- 这些不均的特性显著影响后续的成形过程,需要准确的表征和建模.
研究的目的:
- 为了准确地描述接接头的微观结构,具有明显的性能变化.
- 为接管建立一个准确的构成模型,以预测变形行为.
- 为了验证模型在模拟现实世界成形过程中的可靠性.
主要方法:
- 利用同热处理方法对BR1500HS管进行微结构特征.
- 在各种热处理条件下进行了单轴拉伸试验,以获得应力-拉伸曲线.
- 通过关联微硬度,流应力和中心角开发了一个连续的构成模型,然后将其集成到有限元软件 (VUHARD).
主要成果:
- 成功地描述了微观结构,并建立了接管的连续构成模型.
- 该模型准确地描述了在自由凸模拟过程中的变形反应.
- 精确预测了等效应变分布和厚度稀释率,验证了模型的有效性.
结论:
- 开发的连续构成模型准确地预测了接管的塑料变形行为.
- 这种方法为水性成型工业提供了关键的指导,提高了复杂的薄外组件的制造.
- 精确建模接关节特性对于优化先进的运输设备制造至关重要.
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