摘要
为保护消防员不受火场坠落物造成的伤害,设计制造1种具有缓冲功能的弹性囊袋结构内衬。基于万能材料试验机拉伸试验确定囊袋结构材料A剂与B剂的最佳比例为1∶1;根据理想气体状态方程和弹簧模型推导得到囊袋内填充气压的最佳数值;以此为依据对囊袋结构内衬进行不同加载速率的压缩试验,得到应力应变曲线。研究表明:囊袋结构压缩曲线分为应力增长缓慢期和应力指数型增长期2个阶段,采用结合Sherwood率相关项的Mooney-Rivlin经典超弹模型作为囊袋结构的本构模型能较准确预测和描述材料的力学行为。
In order to protect the firefighters from the injuries caused by falling objects in the fire field,a kind of elastic bag structure lining with the cushioning function was designed and manufactured.Based on the tensile test of universal material testing machine,the optimal ratio of bag structure material was determined as 1∶1 between agent A and agent B.The optimal value of filling pressure in the bag was derived according to the deal gas state equation and the spring model.On this basis,the compression tests under different loading rates were carried out on the inner lining of bag structure,and the stress-strain curves were obtained.The results showed that the compression curve of the bag structure could be divided into two stages of slow stress growth stage and exponential stress growth stage.Using the Mooney-Rivlin classical hyperelastic model combined with Sherwood rate correlation terms as the constitutive model of bag structure can predict and describe the mechanical behavior of material more accurately.
作者
刘艺伦
鲁义
王伟
陈炬兵
施凯阳
王志豪
陈健
李文辉
LIU Yilun;LU Yi;WANG Wei;CHEN Jubing;SHI Kaiyang;WANG Zhihao;CHEN Jian;LI Wenhui(School of Resource & Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411201,China;Shanghai Fire Science and Technology Research Institute of MEM,Shanghai 200032,China;Hunan Yourfield Special Protective Equipment Co.,Ltd.,Xiangtan Hunan 411201,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2022年第2期152-158,共7页
Journal of Safety Science and Technology
基金
湖南省重点研发计划项目(2022GK2042)
湖南省湖湘青年英才项目(2020RC3047)
上海市青年科技启明星计划项目(20QB1401000)
湖南省教育厅科学研究项目(20B230)。
关键词
消防服内衬
囊袋结构
本构模型
填充气压
压缩性能
inner lining of fire suit
bag structure
constitutive model
filling pressure
compression performance
