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Hi,

When we are trying to impact a rigid to rigid there is no physics happening in the simulation. RADIOSS takes the rigid body time step to run the simulation which is very high and the run terminates in one cycle. And I think the same is happening in your model.

We have similar tutorial/webinar which is a tank drop simulation in which fuel is modeled with SPH. I recommend you to go through the same and follow the same steps for your simulation.

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Hello,

I want to consider suitable values for constant parameters coefficients (c1,c2,...) in LAW6 in hypermesh (Radioss) for fuel. where can I find the best values or how can I consider the best values which simulate the fuel in the best way.

Best,

sara

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Hi,

Law6 is covered in this with the basic aspects also shown.

theory_mat_laws.pdf

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thank you so much George.

But I need some information about how can I  select C1,C2,C3,.... in fluid such as fuel. At this theory manual just explain about gases.

I want to know based on what I have to define the pressure equation in law 6.

would you please give me another source?

Best,

sara

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Hi,

The recommended parameters for input to LAW6 is as below:
C0 = C2 = C3 = C4 = C5 = 0         C1 = density*(speed of sound)^2

Also,set a small Pmin value such as -0.1Mpa.

These are inputs I got regarding this material law. Unfortunately no other documents are available on this but will update you if I get more information on this.

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7 hours ago, George P Johnson said:

Hi,

The recommended parameters for input to LAW6 is as below:
C0 = C2 = C3 = C4 = C5 = 0         C1 = density*(speed of sound)^2

Also,set a small Pmin value such as -0.1Mpa.

These are inputs I got regarding this material law. Unfortunately no other documents are available on this but will update you if I get more information on this.

Thank you so much.

Please let me know if you get any new information.

I appreciate your help, always .

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