英语翻译Assessment of the constitutive law by inverse methodolog

英语翻译
Assessment of the constitutive law by inverse methodology:Small punch test and hardness
The relevance of small-punch tests and indentation (hardness) tests are compared with regard to the determination of a
constitutive law in the case of non active ferrite–bainite steel taken from a French power plant.Firstly,small-punch tests
were performed on material samples and the load deflection curves were compared with finite element calculations using
the FORGE2 Standard code.As a result the strength coefficient and the strain hardening exponent of Hollomon’s constitutive
law were determined by an inverse method (Simplex method).Besides,it was shown that a three-parameter constitutive
law such as Ludwik Hollomon’s leads to an indetermination since its parameters are correlated with each other.
Secondly indentation tests were performed with a ball indenter and the parameters of the constitutive law were determined
from the analysis of the load–indentation depth curves.Both methods give results in good agreement with the true stress–
true strain curve obtained by classical tensile testing,thus proving their applicability to nuclear materials.
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Assessment of the constitutive law by inverse methodology: Small punch test and hardness
用反演方法论评估本构关系： 微型杯突试验和硬度
The relevance of small-punch tests and indentation (hardness) tests are compared with regard to the determination of a
constitutive law in the case of non active ferrite–bainite steel taken from a French power plant. 微型杯突试验和压痕（硬度）试验的关联,在确定本构关系方面做了比较,针对的是从一家法国发电厂取来的非活性的铁素体贝氏体钢. Firstly, small-punch tests
were performed on material samples and the load deflection curves were compared with finite element calculations using
the FORGE2 Standard code. 首先对材料样本进行了微型杯突试验,并对荷载变形曲线以采用FORGE2 标准代码的有限元计算做了比较.As a result the strength coefficient and the strain hardening exponent of Hollomon’s constitutive law were determined by an inverse method (Simplex method). 从而用一种反演方法（单一的方法）确定了Hollomon的本构关系的强度系数和应变硬化指数.Besides, it was shown that a three-parameter constitutive law such as Ludwik Hollomon’s leads to an indetermination since its parameters are correlated with each other. 此外,业已证明,一个三参数的本构关系（例如Ludwik Hollomon的）得到的是一个不确定,因为它的参数相互关联.
Secondly indentation tests were performed with a ball indenter and the parameters of the constitutive law were determined
from the analysis of the load–indentation depth curves.其次,用一个球形压头进行压痕试验,而本构关系的诸参数则通过分析荷载－压痕深度曲线加以确定. Both methods give results in good agreement with the true stress– true strain curve obtained by classical tensile testing, thus proving their applicability to nuclear materials.两种方法都和通过经典拉伸试验得到的真应力－真应变曲线非常一致,因此证明了它们对核材料的适用性.

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