Learning Forum

[mintuboyapati]

Hello everyone,

I am working on a space debris capture simulation using a kevlar net. The following are all the parameters I am using for the simulation, either the net disappears or stays in the same place upon running, I have been trying to fix it for a couple of weeks now, I dont know what the issue is. If anyone can help me to see what inputs i might be missing or identify the problem and direct me into a right direction, that would really help me. I am using Altair Hypermesh 2025 for the pre-processing. 

Net: 10cm x 10cm in size, thread diameter = 1.1mm, made with 2D tria shell elements. The net needs to move towards the debris and wrap around it. Material model: MAT_58_LAMINATED_COMPOSITE_FABRIC. Section shell card: ELFORM = 16 (Fully Integrated Shell Element)

Debris: 4cm diameter sphere, made with 3D tetra elements as it is a rigid body and is fixed. Material model: MAT_20_RIGID. Section solid card: ELFORM = 1 (constant stress solid)

Velocity: Initial velocity generation at 4.5m/s

Contact parameters: CONTACT_AUTOMATIC_SURFACE_TO_SURFACE

Then i have CONTROL_TERMINATION, CONTROL_TIMESTEP, CONTROL_ENERGY, DATABASE_BINARY_D3PLOT cards too. 

If you can help me, I can email you my key file. Thank you

This is how both the mock debris and the net look in the software. 

[ErKo]

 

Hi

Hard to know without seeing the model.

Ansys empl. can not look at it, but perhaps other forum members can look and provide feedback (e.g., DChen).

Please wait for them to chime in and help perhaps.

All the best

Erko