Estimation of Yield Surface on Iron Powder Compaction for Finite Element Analysis using Drucker-Prager Cap Model

Estimation of Yield Surface on Iron Powder Compaction for Finite Element Analysis using Drucker-Prager Cap Model
复制标题

使用 Drucker-Prager Cap 模型估计铁粉压实的屈服面以进行有限元分析

DOI:
10.1088/1757-899x/501/1/012021
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发表时间:
2019
期刊:
IOP Conf. Series: Materials Science and Engineering
影响因子:
--
通讯作者:
K Mizuta and Y Taniguchi
K Mizuta and Y Taniguchi
中科院分区:
--
文献类型:
--
作者:
R Ogawa;T Yoshimura;N Yagi;K Mizuta and Y Taniguchi

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通过单剪试验和绿色压坯的单轴破坏试验,利用临界应力状态和单轴破坏应力状态估算了常规雾化铁粉在Drucker-Prager屈服面上的剪切破坏屈服线。横向力测量测试也进行了使用新设计的仪器模具压实系统,以确定压实屈服特性的上限屈服面。通过这些估计,成功地确定了Drucker-Prager Cap模型的材料输入参数。对简单闭模压制过程进行了有限元分析,得到了压制压力随致密化程度变化的良好对应关系。
Shear failure yield line in Drucker-Prager yield surface for conventional atomized iron powder has been estimated with critical stress state and uniaxial failure stress state by single shear test and uniaxial failure test for green compact. Lateral force measurement test was also conducted using newly devised instrumented die compaction system to identify compaction yield characteristics as Cap yield surface. By those estimations, materials input parameters for Drucker-Prager Cap model have been determined successfully. Finite element analysis of simple closed-die compaction has been conducted and good correspondence in variation of compaction pressure with densification has been recognized.
DOI: 10.2497/jjspm.46.696
发表时间: 1999
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影响因子: --
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