船用气囊力学特性及极限承载力分析  

Mechanical Property and Ultimate Bearing Capacity of Ship Airbags

作　　者：余龙[1] 李尧[2] 夏利娟[1] 丁金鸿[1] 杨启[1] 

机构地区：[1]上海交通大学海洋工程国家重点试验室,船舶海洋与建筑工程学院,上海200240 [2]上海交通大学材料科学与工程学院,上海200240

出　　处：《上海交通大学学报》2014年第8期1072-1077,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(51009090)

摘　　要：分析了承压气囊变形的几何描述和根据薄壁压力容器受力分析应力理论,建立了统一的气囊变形与承载力、内压关系数学模型.通过单轴拉伸试验确定囊体材料特征,提出了承压气囊的力学特性和极限承载力的计算方法.通过算例验证,证明该方法可用于承压气囊理论分析,为船用气囊下水的安全使用提供了指导.The general geometry deformation and principle of thin shell pressure container etc were studied.A mathematical model of deformation,bearing force and inner air pressure of a loaded airbag was built.The membrane material property was determined by the uniaxial tensile test.The unified model could predict mechanical property and ultimate bearing capacity of the loaded airbag.Some cases were calculated and compared with the experimental data.The model was validated as a guidance for safety launching application.

关 键 词：船用气囊 力学特性 极限承载力 单轴拉伸试验 

分 类 号：U671[交通运输工程—船舶及航道工程]