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[jacopo <question671364@xxxxxxxxxxxxxxxxxxxxx>]

New question #671364 on Yade:
https://answers.launchpad.net/yade/+question/671364

hi, i need your help. I have to simulate an aircraft crash test on a soil. I already calibrated the soil, now i have to reproduce the aircraft impact. They gave me a nastran file for the aircraft. I converted it in STL. and i am building the simulation. ( i think i ll only need a translation engine to move the aircraft in the horizontal direction, then it will meet the soil and the impact should start). The impact happens at 45 degree respect the soil, then , i rotate the soil of 45 degrees , while the aircraft will move on horizontal direction ( i must follow this procedure). The aircraft is a light aircraft. What i want to ask is:

-> the nastran file contains also the aircraft materials. The stl file gives me only the geometry, it's like only a rigid body.  is there a way to import also the material? if not , i think i have to set a general material to the whole aircraft ( but in this way, the model would not reproduce exacly the real aircraft) and then work on contacts untill i reach the "impact deceleration" that i need to reproduce. ( i have the accelerations of CG of the real impact test that they made on laboratory and i have to reproduce it with a DEM model) any suggestion?   

thanks for your time.

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