Stamping of S-Rail Part
The S-Rail part has become a standard benchmark for testing finite element simulation
codes in stamping operations. This medium size problem (3000 shell elements) is often used
as an industrial benchmark to verify the numerical procedures employed.
In our simulation, the tools are modeled using rigid elements as shown in the
figure above. The punch is shown in red, the blank holder in green, and the
die in blue. The sheet metal (cyan color) is modeled with 4-node shell elements.
The combination of strong technologies in ADINA, such as high performance
elements, implicit static and dynamic time integration, and accurate
contact algorithm allows such problems to be analyzed with good accuracy.
Through the simulation results, the development of the plastic regions can be
analyzed. The above animation shows the band plots of the accumulative effective
plastic strain obtained using ADINA.
Stamping of S-Rail Part - Including Springback
This animation includes the results of springback in the ADINA simulation. Note
the increasing stresses in the part from start to time 1.0. After that, the stresses
start to decrease as a result of the springback. The final shape after the springback
is obtained at time 1.5.
We would like to highlight that the solution time for the springback
simulation is less than 10% of the stamping simulation time. This percentage
is typical for most metal forming simulations using ADINA.
Stamping of S-Rail Part - Comparison of results