改进的虚裂纹闭合技术及其在复合材料脱层分析中的应用 A new VCCT and its application in composite delaminat

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改进的虚裂纹闭合技术及其在复合材料脱层分析中的应用

A new VCCT and its application in composite delamination analysis

提出一种改进的虚裂纹闭合技术(VCCT)对轮胎带束(一种复合材料结构)不同脱层长度下的应变能释放率进行了计算.将强制裂纹闭合的位移作为一种可变约束施加在变形后的裂纹尖端,约束反力作为裂纹尖端力计算,应变能释放率由裂纹尖端力和约束位移的乘积得到.该方法的优点是简便易行,在物理理解上直观,实施起来方便.本文应用该技术对带束脱层进行了断裂力学分析,给出了数值结果,并对带束的脱层寿命进行了评价.

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作 者: 危银涛 杨挺青 万志敏 杜星文  
作者单位:危银涛,杨挺青(华中理工大学,力学系,武昌,430074)水利论文C.n;C9yRC
万志敏,杜星文(哈尔滨工业大学,复合材料研究室,哈尔滨,150001) 
刊 名:计算力学学报  ISTIC EI PKU
英文刊名:CHINESE JOURNAL OF COMPUTATIONAL MECHANICS CHINESE JOURNAL OF COMPUTATIONAL MECHANICS 
年,卷(期):2000 17(3) 
分类号:O346.1 O242.21 TB332 
关键词:虚裂纹闭合技术(VCCT)   轮胎带束   脱层   应变能释放率   寿命  
机标关键词:虚裂纹闭合技术复合材料结构脱层分析应变能释放率裂纹尖端断裂力学分析约束反力位移数值结果轮胎带束可变约束计算直观应用物理寿命评价方法乘积长度 
基金项目: 
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