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A note on mixed-mode fracture by the smoothing gradient damage model
Philosophical Magazine Letters ( IF 1.2 ) Pub Date : 2022-02-23 , DOI: 10.1080/09500839.2022.2041214
Tinh Quoc Bui 1 , Chanh Dinh Vuong 1
Affiliation  

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. 200×200,100×100 and 50×50. 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.



中文翻译:

平滑梯度损伤模型对混合模式断裂的注解

摘要

本技术说明的目的是双重说明。第一个问题专门讨论最近开发的平滑梯度增强损伤模型 (SGDM) 的能力,该模型与改进的 von Mises 等效应变在混合模式断裂问题建模中相关,特别是常见的 Nooru-Mohamed 测试。我们表明,所开发的方法对于该测试非常有效,可以为所有三种试样尺寸产生适当的结构损伤响应和裂纹路径,即200×200,100×10050×50. 第二个问题是以类似的方式讨论另一种损伤模型的准确性较低,Shedbale 等人最近研究的局部梯度损伤方案。诠释。J. Mech Sci 2021, 199:106410,在再现相同混合模式问题的裂纹路径和结构响应方面。

更新日期:2022-02-23
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