改进的霍普金森压杆技术在聚氨脂泡沫塑料动态力学性能研究中的应用

Application of modified split Hopkinson pressure bar techanique in the study of dynamic behavior of a polyurethane foam

摘要: 用改进的霍普金森杆技术得到了聚氨脂泡沫塑料在动态应力均匀和恒应变率条件下的实验结果。
- 固体力学 /
- 动态力学性能 /
- 霍普金森压杆 /
- 泡沫塑料 /
- 动态应力均匀 /
- 脉冲整形器 /
- 恒应变率
Abstract: The experimental technique of split Hopkinson pressure bar is an effective method to carry out an experiment in study of the dynamic behavior of materials. But some problems such as non-uniform dynamic stress in a specimen and non-constant strain rate during the experiment may arise if the technique isnt modified. Polyurethane foams have been widely used in civilian and military areas. It is more important to study their mechanical behavior, especially, dynamic behavior. The dynamic behaviors of a polyurethane foam under the conditions of uniform stress in the specimen and constant strain rate were detained experimentally with modified spilt Hopkinson pressure bar technique.
- solid machanics /
- dynamic behavior /
- SHPB /
- polyurethane foam /
- uniform dynamic stress /
- pulse shaper /
- constant strain rate