| About this Abstract |
| Meeting |
NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
|
| Symposium
|
NUMISHEET 2022
|
| Presentation Title |
A New Sample for Oscillation Free Force Measurement at High Strain Rates and Its Physical Principles |
| Author(s) |
Xiangfan Fang |
| On-Site Speaker (Planned) |
Xiangfan Fang |
| Abstract Scope |
During high-speed tests using hydraulic tensile machine, the force measurements are destroyed by the system ringing effect.
In this work, the ringing of the test system was analyzed using FEM which resulted in the development of a new type of test sample. Depending on the material’s elastic properties and plastic work hardening rate, the new specimen has a a specially designed minor plastic deformation area in addition to the usual plastic deformation zone. A ringing free sample area can be created so that the test force can be measured there using strain gauge sensor without oscillations. The plastic deformation and damage behavior can be determined for a wide range of strain rate of 0.0001 – 5000 /s.
The new probe geometry was used to test Steel & Aluminium and the physical principles have been analyzed and understood. Based on mechanical equations many sample geometries can be calculated and optimized using MATLAB. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |