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首页> 外文期刊>International Journal of Refractory Metals & Hard Materials >Simulation of hot forming processes of refractory metals using porous metal plasticity models
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Simulation of hot forming processes of refractory metals using porous metal plasticity models

机译：使用多孔金属塑性模型模拟难熔金属的热成型过程

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摘要

In this work two models for predicting the densification behavior of sintered refractory metals during hot working operations are presented. It is known from experiments and cell model calculations that the pore shape change has a significant influence on the densification behavior. Therefore this effect should be included in a continuum constitutive description. The first model presented is a phenomenological extension of the Gurson model, the second one is the model of Gologanu, Leblond & Devaux, which was implemented as a user material model into the finite element code ABAQUS. The numerical results are compared with the density distribution of a tapered disk made of pure molybdenum after the hot forming operation.
机译：在这项工作中，提出了两个模型来预测热加工过程中烧结耐火金属的致密化行为。从实验和细胞模型计算得知，孔的形状变化对致密化行为具有重要影响。因此，这种效果应包括在连续的本构描述中。提出的第一个模型是Gurson模型的现象学扩展，第二个模型是Gologanu，Leblond和Devaux的模型，该模型已作为用户材料模型实现为有限元代码ABAQUS。将数值结果与热成型操作后由纯钼制成的锥形盘的密度分布进行比较。

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