| Autor: |
Lin Changliang, Hu Wengang, Liu Na |
| Jazyk: |
čínština |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Hangkong gongcheng jinzhan, Vol 10, Iss 3, Pp 383-388,395 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1674-8190 |
| DOI: |
10.16615/j.cnki.1674-8190.2019.03.012 |
| Popis: |
Fracture of metallic materials is a difficult problem in engineering calculation. At present, researches on the ductile fracture of metal components are mostly based on the fracture samples of 10 kinds of classical plastic materials to analyze the characterization parameters and fracture mechanism of the ductile fracture of components, and there are few studies on the application of ductile metal fracture criteria in lugs and joints. Tensile fracture tests are carried out on lug joints of four types of structures. The fracture failure of lug joints in tensile tests is simulated by using the stress triaxial criterion, and the influence of joint structure on fracture performance and the accuracy of the algorithm are compared. Study shows that: at the linear elastic stage of the material, the displacement and deformation of the 4 joints are basically the same; the cross section of the joint is mainly concentrated in the center of the opening of the lug; the fracture strength of the joint can be improved by adding a boss at the opening of the lug; the effect of stud and R-angle and different loading rate on the fracture property of the joint is little. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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