Earing Prediction in Cup Drawing using the BBC2008 Yield Criterion
Earing Prediction in Cup Drawing using the BBC2008 Yield Criterion
复制标题
使用 BBC2008 产量标准预测杯赛抽穗情况
DOI：
10.1063/1.3623604
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发表时间：
2011
影响因子：
6.8
通讯作者：
D. Banabic
中科院分区：
文献类型：
--
作者：
M. Vrh;M. Halilovič;B. Starman;B. Stok;D. Comşa;D. Banabic
本文研究了高各向异性板材的本构模型。提出了在高各向异性铝合金杯形拉深模拟中基于有限元的压入预测，其中出现四个以上的压耳。为此，使用了BBC2008屈服准则，这是以有限级数形式表示的平面应力屈服准则。这样定义的标准可以扩展以保留更多或更少的项，这取决于给定的实验数据量。为了将该模型用于板料成形模拟，我们通过VUMAT子程序在通用有限元程序ABAQUS/EXPLICIT中实现了该模型，同时考虑了8个或16个参数(8p和16p版本)。对于本构模型的积分，采用了显式NICE(Next Increment Equts Error)积分格式。由于方案的有效性，模拟的CPU时间消耗与内置本构模型的时间消耗相当。两种铝合金，即……
The paper deals with constitutive modelling of highly anisotropic sheet metals. It presents FEM based earing predictions in cup drawing simulation of highly anisotropic aluminium alloys where more than four ears occur. For that purpose the BBC2008 yield criterion, which is a plane‐stress yield criterion formulated in the form of a finite series, is used. Thus defined criterion can be expanded to retain more or less terms, depending on the amount of given experimental data. In order to use the model in sheet metal forming simulations we have implemented it in a general purpose finite element code ABAQUS/Explicit via VUMAT subroutine, considering alternatively eight or sixteen parameters (8p and 16p version). For the integration of the constitutive model the explicit NICE (Next Increment Corrects Error) integration scheme has been used. Due to the scheme effectiveness the CPU time consumption for a simulation is comparable to the time consumption of built‐in constitutive models. Two aluminium alloys, namely...