A damage initiation criterion for a class of viscoelastic solids

A damage initiation criterion for a class of viscoelastic solids
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一类粘弹性固体的损伤萌生准则

DOI:
10.1098/rspa.2018.0064
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发表时间:
2018
期刊:
Physical and Engineering Sciences
影响因子:
--
通讯作者:
Kannan, K.
Kannan, K.
中科院分区:
--
文献类型:
--
作者:
Alagappan, P.;Rajagopal, K. R.;Kannan, K.

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我们将在一类弹性固体背景下引入的损伤启动方法扩展到一类粘弹性固体(Alagappanet al.2016Proc)。r . Soc。Lond。答:数学。理论物理。Eng。Sci.472, 20160231。(doi: 10.1098 / rspa.2016.0231))。离开损伤的研究,认为身体是均匀的,起始的伤害是由参数决定基于数量如应变、需要的信息关于一个特殊的参考配置,或使用特别的参数没有物理意义的起源,在这项研究中,我们使用一个物理相关的参数,是完全确定当前变形状态的身体来预测损伤的起始。损伤是由于身体的不均匀性引起的,其中身体的某些区域无法承受应力、应变等。所考虑的具体不均匀性是体内密度的变化。我们考虑了两种具有代表性的粘弹性固体变形背景下的损伤,这是Gent(1996橡胶化学与技术,69,59-61)提出的模型的推广。(doi:10.5254/1.3538357)))的聚合物固体和推广的开尔文- voigt模型。我们发现该准则导致的结果与Gent & Lindley (1959Proc)的实验一致。r . Soc。Lond。答:数学。理论物理。Eng。Sci.249, 195 - 205。(doi: 10.1098 / rspa.1959.0016))。
We extend the methodology introduced for the initiation of damage within the context of a class of elastic solids to a class of viscoelastic solids (Alagappanet al.2016Proc. R. Soc. Lond. A: Math. Phys. Eng. Sci.472, 20160231. (doi:10.1098/rspa.2016.0231)). In a departure from studies on damage that consider the body to be homogeneous, with initiation of damage being decided by parameters that are based on a quantity such as the strain, that requires information concerning a special reference configuration, or the use of ad hoc parameters that have no physically meaningful origins, in this study we use a physically relevant parameter that is completely determined in the current deformed state of the body to predict the initiation of damage. Damage is initiated due to the inhomogeneity of the body wherein certain regions in the body are unable to withstand the stresses, strains, etc. The specific inhomogeneity that is considered is the variation of the density in the body. We consider damage within the context of the deformation of two representative viscoelastic solids, a generalization of a model proposed by Gent (1996Rubber Chemistry and Technology69, 59–61. (doi:10.5254/1.3538357)) for polymeric solids and a generalization of the Kelvin–Voigt model. We find that the criterion leads to results that are in keeping with the experiments of Gent & Lindley (1959Proc. R. Soc. Lond. A: Math. Phys. Eng. Sci.249, 195–205. (doi:10.1098/rspa.1959.0016)).
DOI: 10.1177/1081286517692392
发表时间: 2018
影响因子: 2.6
作者:
Alagappan, P;Rajagopal, KR;Kannan, K
通讯作者: Kannan, K
DOI: 10.1007/s11012-016-0539-3
发表时间: 2016
期刊: Meccanica
影响因子: 2.7
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通讯作者: K. Kannan
DOI: 10.1098/rspa.2016.0231
发表时间: 2016
期刊: Physical and Engineering Sciences
影响因子: --
作者:
Alagappan, P.;Kannan, K.;Rajagopal, K. R.
通讯作者: Rajagopal, K. R.
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发表时间: 1956-01-01
影响因子: 3.4
作者:
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