聚甲醛动态力学性能及本构行为研究  

The Research of Dynamic Mechanical Properties and Constitutive Behavior of POM

作　　者：陈春晓[1] 彭刚[1] 冯家臣[1] 王绪财 王伟[1] 高波[1] 

机构地区：[1]中国兵器工业集团第五三研究所,山东济南250031

出　　处：《塑料工业》2018年第2期137-139,53,共4页China Plastics Industry

摘　　要：基于分离式一维霍普金森压杆(SHPB)试验技术,研究了聚甲醛(POM)塑料在室温和高温下的动态压缩力学性能,结合试验数据,对POM塑料的本构方程进行了拟合。研究发现,POM塑料在动态压缩过程中不仅出现材料的应变硬化现象,同时也存在着绝热变形引起的应变软化现象;通过分析所建立的方程预测数据与实验数据在试样应变5%前拟合程度较好。Based on the split Hopkinson pressure bar （SHPB） experiment technique, this paper studied dynamic compression mechanical property of polyoxymethylene （POM） under the conditions of room temperature and high temperature. Combined the experimental data, the constitutive equation of POM was fitted. Dynamic compression results show that in the process of POM dynamic compression, not only strain hardening but also the strain softening caused by adiabatic deformation happened to the POM material. The predicted data of proposed model is resembled to the experimental data when the samples deformation lower than 5%.

关 键 词：聚甲醛 动态压缩 应变硬化 应变软化 本构方程 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]