公开(公告)号：US20150213164A1

公开(公告)日：2015-07-30

申请号：US14164613

申请日：2014-01-27

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Devin R. Hess ,  Michael J. Walker ,  Herbert W. Doty ,  Bowang Xiao

IPC: G06F17/50

CPC classification number: G06F17/5018

Abstract: A method of computationally determining material property changes for a cast aluminum alloy component. Accuracy of the determination is achieved by taking into consideration material property changes over the projected service life of the component. In one form, the method includes accepting time-dependent temperature data and using that data in conjunction with one or more constitutive relationships to quantify the impact of various temperature regimes or conditions on the properties of heat-treatable components and alloys. Finite element nodal analyses may be used as part of the method to map the calculated material properties on a nodal basis, while a viscoplastic model may be used to determine precipitation hardening and softening effects as a way to simulate the time and temperature dependencies of the material. The combined approach may be used to determine the material properties over the expected service life of a cast component made from such material.

Abstract translation: 一种计算确定铸造铝合金部件的材料特性变化的方法。 确定的准确性是通过考虑到零件的预计使用寿命内的材料性质变化来实现的。 在一种形式中，该方法包括接受时间依赖性温度数据并且结合一个或多个本构关系使用该数据来量化各种温度方案或条件对可热处理组分和合金的性质的影响。 可以使用有限元节点分析作为方法的一部分，以在节点的基础上映射计算的材料性质，而粘弹性模型可用于确定沉淀硬化和软化效应，作为模拟材料的时间和温度依赖性的方式 。 组合方法可用于确定由这种材料制成的铸造部件的预期使用寿命的材料性能。