| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Development of Antiloosening Bolts Based on Innovative Double Thread Mechanism |
| Author(s) |
Teruie Takemasu |
| On-Site Speaker (Planned) |
Teruie Takemasu |
| Abstract Scope |
We developed new double-thread bolted joints based on an innovative mechanism composed of single and multiple coarse threads. The number of coarse threads of the multiple-thread was set to 3 (denoted as 3DTB-II), and its thread structure was fundamentally modified to improve rolling formability and strength as follows: (i) one of the three multiple-thread grooves was removed for 3DTB-II specimens and one of the two remaining grooves shifted downwards by a half pitch (denoted 3-1DTB-IIB) and (ii) the depth of the multiple-thread grooves was reduced by up to 50% of the thread height (denoted 3-1DTB-IIC). FEM thread rolling simulations were performed using a dedicated die. The two kinds of modified DTB-II specimens were rolled precisely and the thread heights reached the target value at all cross sections. The forming states in the thread rolling experiments well matched the FEM simulation states. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |