| 泡桐木夹层结构材料的力学性能 |
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| 引用本文： | 方海,刘伟庆,陆伟东,万里. 泡桐木夹层结构材料的力学性能[J]. 陶瓷科学与艺术, 2011, 0(5) |
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| 作者姓名： | 方海 刘伟庆 陆伟东 万里 |
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| 作者单位： | 南京工业大学土木工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50978134,51008157); 博士点基金博导类课题资助项目(20103221110008); 江苏省高校自然科学基金资助项目(09KJB560001) |
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| 摘 要： | 选用泡桐木为原料,制备出夹层结构用泡桐木绿色夹芯材料,其木质纤维具有天然蜂窝形状,结构类似于目前航空航天领域常用的蜂窝芯材;泡桐木芯材除密度略高于Balsa轻木外,其他力学性能测试指标均优于轻木,同时在价格上占有绝对的优势。采用真空导入成型工艺,成功制备出轻质高强的泡桐木夹层复合材料,通过不同跨高比试件的三点与四点弯试验,研究其典型受力破坏形态与机制;利用经典夹层梁理论预估试件抗弯刚度和受弯极限承载力,理论值与实测值符合较好,并以此为基础,提出了基于强度的优化设计方法。
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| 关 键 词： | 泡桐木 复合材料夹层结构 力学性能 |
Mechanics properties of paulownia core sandwich composites |
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| FANG Hai,LIU Weiqing,LU Weidong,WAN Li. Mechanics properties of paulownia core sandwich composites[J]. Ceramics Science & Art, 2011, 0(5) |
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| Authors: | FANG Hai LIU Weiqing LU Weidong WAN Li |
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| Affiliation: | FANG Hai,LIU Weiqing,LU Weidong,WAN Li(College of Civil Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Green paulownia sandwich composite material was manufactured by using paulownia tree.The mechanics properties of paulownia were better than that of balsa wood except weight,and it was low-cost.The light-weight high-performance paulownia core sandwich composites were manufactured by vacuum infusion molding process.The sandwich beams with different ratios of span to thickness were researched by three-point and four-point flexural test.The typical failure modes and the mechanism of innovative sandwich specimen... |
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| Keywords: | paulownia sandwich composite mechanics properties |
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