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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 
    • Rahul Ponginan

      Introduction to Explicit Analysis using RADIOSS.   11/02/17

      We are excited to announce the release of updated RADIOSS ebook, Introduction to Explicit Analysis using RADIOSS. We have added new tutorials, more FAQ's....etc with more topics covered. This study guide aims to provide a good introduction into the exciting and challenging world of explicit Finite Element Analysis.
      You can download the updated RADIOSS ebook here: Introduction to Explicit Analysis using RADIOSS                                                           
Roy Duan

What's the main difference between /mat/law38 and /mat/law70?

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Hi all,

Which material model should be used for a package foam when doing package dropping simulation? From the help manual, both /mat/law38 and /mat/law70 are visco-elastic Foam Tabulated material. What's the difference between this two models? Is there any example about package dropping simulation?

 

Best Wishes

Roy

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Hi Roy,

/MAT/LAW 38 and /MAT/LAW70 can be used to model  visco-elastic foam tabulated materials. Based on the input user has a material law can be selected.

/MAT/LAW70 generally works stable. For /MAT/LAW38 time step can reduce significantly for high deformations.

I suggest you to try with /MAT/LAW70.

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On 2017/9/11 at 0:56 PM, George P Johnson said:

Hi Roy,

/MAT/LAW 38 and /MAT/LAW70 can be used to model  visco-elastic foam tabulated materials. Based on the input user has a material law can be selected.

/MAT/LAW70 generally works stable. For /MAT/LAW38 time step can reduce significantly for high deformations.

I suggest you to try with /MAT/LAW70.

Hi George,

Could you provide some example about using this foam material? Thank you.

 

Roy

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2 hours ago, George P Johnson said:

Hi Roy,

Unfortunately we don't have any example files on this material law as of now. Very soon we will release a tutorial/webinar on foam modelling in RADIOSS.

 

Hi George,

I'm glad to hear that. I'm looking forward to the tutorial or webinar on foam.

 

Roy

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Hi Roy,

This tutorial is still on the anvil.

Meanwhile you can go through http://altairatc.com/europe/presentations/session10/session10_ford_schilling.pdf which is a case study on Numerical simulation of polymeric foams under impact loading. If possible, I will share a foam material model for your reference. 

 

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On 2017/10/10 at 7:05 PM, George P Johnson said:

Hi Roy,

This tutorial is still on the anvil.

Meanwhile you can go through http://altairatc.com/europe/presentations/session10/session10_ford_schilling.pdf which is a case study on Numerical simulation of polymeric foams under impact loading. If possible, I will share a foam material model for your reference. 

 

Hi George,

How about the tutorial about foam in Radioss?

 

Roy

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