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PBX材料的蠕变损伤本构关系
引用本文:丁雁生,潘颖,蔡瑞娇,郁向东,杨玉明.PBX材料的蠕变损伤本构关系[J].含能材料,2000,8(2):86-90.
作者姓名:丁雁生  潘颖  蔡瑞娇  郁向东  杨玉明
作者单位:1. 中国科学院力学研究所,北京,100080
2. 北京理工大学,北京,100081
3. 中国工程物理研究院结构力学研究所,四川,绵阳,621900
基金项目:中国物理研究院科研项目,960310,
摘    要:依据分子链变形和滑动观点分析了PBX材料的蠕变机理,指出聚合物蠕变是颗粒高度填充聚合物基合材料蠕变的主要根源。用一维粘弹性蠕变损伤模型对Johnson的实验数据作进一步分析,讨论了PBX造型粉粒度等因素对PBX聚合物基复合材料蠕变损伤的影响,并指出PBX材料的蠕变损伤存在某种随机性。

关 键 词:高聚物粘结炸药  粘弹性  蠕变损伤
收稿时间:4/8/1999 12:00:00 AM
修稿时间::

The Creep-damage Constitutive Relation of PBX
DING Yan-sheng,PAN Ying,CAI Rui-jiao,YU Xiang-dong and YANG Yu-ming.The Creep-damage Constitutive Relation of PBX[J].Chinese Journal of Energetic Materials,2000,8(2):86-90.
Authors:DING Yan-sheng  PAN Ying  CAI Rui-jiao  YU Xiang-dong and YANG Yu-ming
Affiliation:Institute of Mechanics, CAS, Beijing 100080, China;;Beijing Institute of Technology, Beijing 100081, China;;Beijing Institute of Technology, Beijing 100081, China;;Southwest Institute of Structural Mechanics,CAEP, Mianyang 621900, China;Southwest Institute of Structural Mechanics,CAEP, Mianyang 621900, China
Abstract:A creep mechanism of PBX which is a polymer matrix composite filled by large number of solid particle is studied from the theory of deformation and sliding of molecular chain of the polymer in this paper. It is shown that the creep property of the polymer is the main factor influencing on the creep damage properties of the composite though polymer content is so little in amount. The creep experimental results of Johnson are analyzed further by one dimensional viscoelasticity damage model about creep. The influence of the granularity on the creep damage of PBX material and a certain probability of the creep damage of PBX material are discussed initially.
Keywords:polymer matrix composite  PBX    viscoelasticity  creep-damage
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