التفاصيل البيبلوغرافية
| العنوان: |
Calculations of crack stress intensity factors based on FEM and XFEM models. |
| المؤلفون: |
Liao, Yashi, Zhang, Xuhui, Wang, Bisheng, He, Miaolei |
| المصدر: |
Australian Journal of Mechanical Engineering; Dec2024, Vol. 22 Issue 5, p973-983, 11p |
| مصطلحات موضوعية: |
CRACK propagation (Fracture mechanics), RUBBER, INTEGRALS, STRESS intensity factors (Fracture mechanics) |
| مستخلص: |
The basis of describing stress intensity factor and predicting residual life of structure is the right numerical model of dynamic crack propagation. 'FEM+M integral' and 'XFEM+M integral' methods were, respectively, adopted. Difficulties of 'FEM+M integral' method were solved, such as the singularity of crack tip, nodal uncoincidence of rubber layer unit and plate unit during mesh repartition and calculation convergence. In addition, difficulties of 'XFEM+M integral' method were overcome, such as difficult crack tip coordinates, difficult cutting point of crack and element and crack deflection in the element. On this basis, the effective calculation of stress intensity factor was realised. Through simulation and calculation, it is found that the error value is within 5%. The model reliability is further verified within the allowable error range. [ABSTRACT FROM AUTHOR] |
|
Copyright of Australian Journal of Mechanical Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |