Study on the influence of damage evolution model on the precision of numerical simulation of titanium alloy finishing
Release time:2025-02-15
Hits:
- DOI number:
- 10.13433/j.cnki.1003-8728.20230338
- Journal:
- Mechanical Science and Technology for Aerospace Engineering
- Key Words:
- titanium alloy；finite element simulation；failure displacement；fracture energy；cutting force；chip morphology；residual stress
- Abstract:
- When the finite element simulation method is used to study the cutting mechanism of titanium alloy, different damage evolution models and their parameter settings greatly affect the reliability and accuracy of the research results. In this paper, a three-dimensional titanium alloy finishing turning model is established by ABAQUS, and the turning process of Ti6Al4V is simulated by different damage evolution models ( fracture energy and failure displacement ). In view of the fact that the failure displacement in the damage evolution model is difficult to be reasonably valued during modeling, a failure displacement value method is given. According to the unit size, three groups of different failure displacement values are set up for cutting simulation, and then the law of failure displacement value is summarized. Finally, the effects of two damage evolution models on cutting force, chip morphology and residual stress are compared. The results show that under the same process parameters, the simulation accuracy is more accurate when the failure displacement is close to the cell size. The damage evolution model based on failure displacement is more convenient than the damage evolution model based on fracture energy, and has good consistency with the test.
- Co-author:
- DOU Weitao,KAI Kang
- First Author:
- DU Linshen
- Indexed by:
- Journal paper
- Correspondence Author:
- Lichen Shi
- Translation or Not:
- no
- Date of Publication:
- 2023-01-01
- Links to published journals:
- https://link.cnki.net/urlid/61.1114.TH.20231122.1429.006