[1]赵金海,唐和生,薛松涛.Peridynamic含初始缺陷中心平行双裂纹扩展分析[J].哈尔滨工程大学学报,2018,39(10):1612-1616.[doi:10.11990/jheu.201704077]
 ZHAO Jinhai,TANG Hesheng,XUE Songtao.Analysis of the center parallel double-crack propagation with initial casting defects by peridynamics[J].hebgcdxxb,2018,39(10):1612-1616.[doi:10.11990/jheu.201704077]
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Peridynamic含初始缺陷中心平行双裂纹扩展分析(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
39
期数:
2018年10期
页码:
1612-1616
栏目:
出版日期:
2018-10-05

文章信息/Info

Title:
Analysis of the center parallel double-crack propagation with initial casting defects by peridynamics
作者:
赵金海1 唐和生12 薛松涛1
1. 同济大学 土木工程学院, 上海 200092;
2. 同济大学 土木工程防灾国家重点实验室, 上海 200092
Author(s):
ZHAO Jinhai1 TANG Hesheng12 XUE Songtao1
1. College of Civil Engineering, Tongji University, Shanghai 200092, China;
2. State Key Laboratory of Disaster Prevention in Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
非局部理论近场动力学初始缺陷裂纹扩展中心平行双裂纹
分类号:
TU:375;TU311.3
DOI:
10.11990/jheu.201704077
文献标志码:
A
摘要:
为了更好地模拟裂纹扩展行为,一种基于非局部理论——近场动力学被提出,PD采用积分的方法避免了传统方法存在的问题,并采用相邻质点间距离和临界延伸率sc的变化来描述物体受力变化规律,更好地模拟了裂纹扩展及多裂纹融合。本文基于PD模拟了没有缺陷不同间距的中心平行双裂纹扩展路径,然后采用降低质点间键的强度,模拟了含随机分布初始缺陷(气孔,夹杂,未熔合)的中心平行双裂纹扩展路径。得到了初始缺陷对不同纵向间距中心平行双裂纹扩展融合及背离路径的影响规律。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-04-24。
基金项目:上海市基金项目(17ZR431900);科技部国家重点实验室基础研究项目(SLDRCE14-B-03).
作者简介:赵金海(1988-),男,博士;唐和生(1973-),男,副教授.
通讯作者:唐和生,E-mail:thstj@tongji.edu.cn.
更新日期/Last Update: 2018-10-10