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AZ31 合金滚动成型弹预测考虑到无异型和不对称性质

Yu Yan¹, Hanzhong Xu², Haibo Wang¹

¹School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China.

Materials (Basel, Switzerland)

|July 12, 2025

概括

精确建模合金形成需要考虑异构和不对称性. 考虑到这些特性,Verma产量标准显著改善了与传统方法相比,对合金成型工艺的预测.

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
计算力学计算力学计算力学

背景情况:

合金对于轻质结构设计至关重要,但由于其固有的异构和张力压缩不对称性,它们的成型具有挑战性.
使用von Mises或Hill48产量标准的传统有限元素方法 (FEM) 模型往往无法准确预测合金的成形行为,因为它们忽视了这些材料的复杂性.

研究的目的:

开发和验证一个精确的FEM模型来模拟合金的成型过程.
调查异构和不对称材料特性对形成预测的准确性的影响.

主要方法:

在三种材料方向进行单轴和双轴拉伸试验,以及压力试验,以表征异轴和不对称的特性.
基于实验数据,获得了Hill48和Verma产量标准的参数.
开发了一个用户子程序 (VUMAT) 用于FEM模拟,并结合了这些产量标准,并对AZ31合金的实验滚塑验证了模型.

主要成果:

与·米塞斯和Hill48的标准相比,Verma的收益率标准,考虑到异构和不对称性,在预测滚动成形和弹方面表现出更高的准确性.
忽视异构和不对称性的FEM模型为合金板的滚形提供了不太准确的预测.

结论:

维玛产量标准为模拟合金中曲主导的成型过程提供了更可靠的方法.
精确建模合金形成需要包括异构和不对称的材料特性可靠的预测.

关键词:

不同类型的异型性异型性合金合金合金滚装成型滚装成型滚装成型春季回归是一个回归.张力压缩不对称性收益率标准收益率标准收益率标准

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