可控薄弱环节复合材料圆柱壳的耐撞性研究  

The crashworthiness of composite tubes with controllable trigger mechanism

作　　者：龚俊杰 王鑫伟[2] 王新峰[2] 

机构地区：[1]扬州大学,扬州225002 [2]南京航空航天大学,南京210016

出　　处：《应用力学学报》2010年第2期243-249,共7页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(50675100);教育部高等学校重点学科建设项目(Y0102);上海市重点学科建设项目(BB67)

摘　　要：为了验证SMA可控薄弱环节的效果,制作了含有与不含有SMA丝的玻璃/环氧复合材料圆柱壳试验件,并对其进行了准静态轴向压缩试验,比较了各种试件的峰值载荷、平均载荷以及吸能能力。试验结果表明,可控薄弱环节不但可以降低试件的峰值载荷,而且能够改善复合材料结构的耐撞性能,有望解决传统复合材料吸能结构设计中静强度(刚度)与耐撞性之间的矛盾问题。Several glass/epoxy composite tubes with and without SMA are fabricated and then tested to failure in compression at room temperature for verifying the effect of controllable trigger mechanism.The peak load,sustained load and the energy absorption capability of all kinds of specimens are compared.Preliminary test results show that a controllable trigger mechanism not only can decrease the peak load and improve the crashworthiness of composite structures,but also can solve the contradicted requirements between the structural strength(stiffness) and the crashworthiness.

关 键 词：复合材料 薄弱环节 SMA 圆柱壳 耐撞性 

分 类 号：TB332[一般工业技术—材料科学与工程] O347.1[理学—固体力学]