Research on theoretical modeling and numerical simulation of viscoelastic-plastic bending neutral layer in T-welding stiffened panels-based aged stress relaxation forming
| Autor: | Yuejie Cao, Guo Zheng, Zengqiang Cao, Duquan Zuo |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Materials science Computer simulation Mechanical Engineering 02 engineering and technology Welding 021001 nanoscience & nanotechnology Viscoelasticity law.invention 020901 industrial engineering & automation Snapback law Plastic bending Stress relaxation Relaxation (physics) Composite material 0210 nano-technology Layer (electronics) |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 234:2881-2894 |
| ISSN: | 2041-2983 0954-4062 |
| DOI: | 10.1177/0954406220910766 |
| Popis: | A new mathematical model-based on aging-stress relaxation forming for heterogeneous stiffened panel that is T-welded together is developed. The corresponding theoretical method for calculating its neutral layer positions and forming die shapes in viscous-elastic-plastic bending is obtained by gradually deriving the modeling process of age forming of T-section beam, and comparisons of the theoretical data and simulated solutions are presented. It is found that the hot form solutions can be obtained for cylindrical die shapes, and the actual neutral layer position of stiffened panel can be accurately determined by the established theoretical model. Meanwhile, for the elastic bending and plastic bending stages, the neutral layer positions of stiffened panel are greatly different. The neutral axis of the former passes through its section centroid, while the latter does not, but it gradually, but significantly shifts to the outer layer of thin plate as the bending radius of die decreases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|