Abstract
Craze damage is introduced in the plastic region near the crack tip of non-crystalline polymers. A modified Dugdale model is proposed, from which the size of the plastic region is determined. Example shows that the craze damage leads to the increasing of the size of plastic region. Besides, the plastic region near the steadily extending crack tip is studied under Dugdale model. Based on such assumptions as slowly extending crack, small scale crazing and linear viscoelastic materials, etc., a nonlinear differential-integral equation governing the crack growth is obtained, via the energy principle. From this equation, it is found that the effect of craze damage is rather dominant.
| Original language | English |
|---|---|
| Pages (from-to) | 7-12 |
| Number of pages | 6 |
| Journal | Ying Yong Li Xue Xue Bao/Chinese Journal of Applied Mechanics |
| Volume | 15 |
| Issue number | 3 |
| Publication status | Published - 1 Sept 1998 |
Keywords
- Crack tip
- Craze damage
- Non-crystalline polymer
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering