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浙江大学学报(工学版)
浙江大学学报(工学版)
机械工程     
层合板分层失效数值模拟与参数识别
籍庆辉, 朱平, 卢家海
1. 上海汽车集团股份有限公司 前瞻技术研究部,上海 201804； 2. 上海交通大学 机械系统与振动国家重点实验室, 上海 200240； 3. 上海交通大学 上海市复杂薄板结构数字化制造重点实验室,上海 200240
Numerical simulation and parameter identification of delamination failure for laminate
JI Qing-hui, ZHU Ping, LU Jia-hai
1. Research and Advanced Technology, SAIC Motor Corporation Limited, Shanghai 201804, China; 2. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China； 3. Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China
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摘要：

为了精确预测纤维增强复合材料层合板分层失效问题,提出基于虚拟裂纹闭合法的复合材料层合板分层失效准则参数的识别方法.通过双悬臂梁（DCB）试样和末端缺口弯曲（ENF）试样准静态力学试验获得I型和Ⅱ型分层断裂韧性.综合虚拟裂纹闭合法和有限元法,分别建立I型、Ⅱ型以及I/Ⅱ混合型分层数值仿真模型.基于已有的分层混合模式试验数据验证该方法的有效性.针对汽车用平纹机织碳纤维复合材料,利用纯I型和纯Ⅱ型试验和混合模式弯曲试样仿真模型,对分层失效准则参数进行了识别.结果表明,运用所建立的参数识别方法能够准确地得到层合板分层失效准则参数,有效克服了传统试验方法获取失效参数的成本高和周期长的问题.
Abstract: The method of parameter identification for delamination failure criterion was proposed based on virtual crack closure technique (VCCT) in order to predict accurately delamination failure of fiber-reinforced composite laminate. The delamination fracture toughness of mode I and mode Ⅱ was obtained using quasi-static mechanical tests of double cantilever beam (DCB) and end notch flexure (ENF), respectively. The delamination FE models of mode I, mode Ⅱ and I/Ⅱ mixed-mode were made using VCCT and FEM. The proposed method was validated using existing mixed-mode experimental data. The parameters of power criterion and Benzeggagh-Kenane (B-K) criterion were identified using mixed-mode experimental data from reference. The delamination failure parameters was identified using experimental results of mode I and mode Ⅱ and simulative result of mixed-mode bending (MMB), for plain weave CFRP in automobile. Results show that parameters of failure criterion can be obtained accurately by the proposed method, which overcomes the high cost and long period of traditional experimental method.
出版日期: 2017-05-01
CLC:  TB 332  
基金资助:

国家自然基金资助项目（11372181）；国汽轻研院开放课题资助项目（20130303）.
通讯作者: 朱平,男,教授,博导. ORCID: 0000-0003-3836-8831.     E-mail: pzhu@sjtu.edu.cn
作者简介: 籍庆辉（1982—）,男,博士,从事汽车轻量化等研究. ORCID: 0000-0003-2301-8476. E-mail: jiorwell@163.com
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引用本文:

籍庆辉, 朱平, 卢家海. 层合板分层失效数值模拟与参数识别[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2017.05.015.

JI Qing-hui, ZHU Ping, LU Jia-hai. Numerical simulation and parameter identification of delamination failure for laminate. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2017.05.015.

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