Please wait a minute...
材料研究学报  1990, Vol. 4 Issue (1): 91-96    
  研究论文 本期目录 | 过刊浏览 |
高分子材料的极限断裂强度和破坏性能的研究——Ⅱ.蠕变持久强度的动力学模型理论
宋名实
北京化工学院高分子材料研究所;教授北京市100013
A STUDY ON THE ULTIMATE FRACTURE STRENGTH AND FRACTURE BEHAVIOR OF POLYMERIC MATERIALS——Ⅱ.A KINETIC MODEL THEORY OF CREEP TENSILE STRENGTH
SONG Mingshi(Beijing Institute of Chemical Technology)
引用本文:

宋名实. 高分子材料的极限断裂强度和破坏性能的研究——Ⅱ.蠕变持久强度的动力学模型理论[J]. 材料研究学报, 1990, 4(1): 91-96.
. A STUDY ON THE ULTIMATE FRACTURE STRENGTH AND FRACTURE BEHAVIOR OF POLYMERIC MATERIALS——Ⅱ.A KINETIC MODEL THEORY OF CREEP TENSILE STRENGTH[J]. Chin J Mater Res, 1990, 4(1): 91-96.

全文: PDF(446 KB)  
摘要: 本文对当前蠕变持久强度的表征进行了系统总结,指出了它是高分子材料的可形变性、分子链应力集中情况和应力集中链断链滑移动力学三者统一的体现。基于这种破坏概念,推导出一种能表征半晶态、玻璃态和弹性体等聚合物的蠕变持久强度动力学模型理论和一般化断裂状态方程。当该方程引入一、二级近似条件后,该式就分别还原为准脆性状态下粘弹性蠕变断裂方程,受迫高弹性状态下蠕变断裂方程和高弹性状态下蠕变断裂方程。
关键词 蠕变持久强度蠕变持久性聚合物材料的破坏聚合物材料的断裂    
Abstract:The failure phenomena of viscoelastic materials consist of three factors:1)the time dependences of the bulk stress-strain relation;2)the time dependences of the fail-ure initation mechanism-the formation of overstressed polymer chains in local plastic are
Key wordscreep tensile strength    creep durability    failure of polymers    fracture of polymers
收稿日期: 1990-02-25     
基金资助:国家自然科学基金 9587008—03
1 Zhurkov S N,Narzullayev B N.Zh Tekh Fiz,1953;23:1677 1955;25:66
2 Bueche F.J Appl Phys,1955;26:1133 1958;29:1231
3 Kroschwitz J I.Polymers:An Encyclopedic Sourcebook of Engineering Properties.New York:Willy,1987:397
4 Tobolsky A,Eyring H.J Chem Phys,1943;11:125
5 #12
6 #12
7 宋名实.北京化工学院学报,1990;17(1) :65
8 Kinloch A J,Yong R J.Fracture Behavior of Polymers,London,App Sci Pub,1983:113
9 Barton S J,Charry B W.Polym Eng Sci,1979;19:590
10 Larson F R,Miller J.Trans ASME,1952;74:765
No related articles found!