用平滑梯度损伤模型研究混合模式断裂

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2022-02-23 DOI:10.1080/09500839.2022.2041214

T. Bui, Chanh Dinh Vuong

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引用次数: 0

摘要

摘要本技术说明的目的是说明两个方面。第一个问题是最近开发的平滑梯度增强损伤模型（SGDM）的能力，该模型与模拟混合模式断裂问题时的修正von Mises等效应变有关，特别是常见的Nooru–Mohamed试验。我们表明，所开发的方法在该测试中效果良好，对所有三种试样尺寸（即和）产生了适当的结构损伤响应和裂纹路径。第二个问题是，以类似的方式，讨论另一个损伤模型的精度较低的问题，Shedbale等人最近研究的局部梯度损伤方案。Int.J.Mech Sci 2021199:106410，在再现相同混合模式问题的裂纹路径和结构响应时。

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A note on mixed-mode fracture by the smoothing gradient damage model

ABSTRACT The objective of this technical note is to illustrate twofold. The first issue is devoted to the ability of the recently developed smoothing gradient-enhanced damage model (SGDM), which is associated with the modified von Mises equivalent strain in modelling mixed-mode fracture problems, in particular the common Nooru–Mohamed's test. We show that the developed approach works pretty well for this test, yielding appropriate structural damage response and crack paths for all three specimen sizes, i.e. and . The second issue is, in a similar manner, to discuss the less accuracy of another damage model, the localising gradient damage scheme recently studied by Shedbale et al. Int. J. Mech Sci 2021, 199:106410, in reproducing crack paths and structural responses for the same mixed-mode problem.

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.