Learning Forum

[日凯 林]

After preloading the axle forces, I wanted to simulate a car impact, but I encountered the following error：Warning 41134 (SOL+1134) (processor # 0) READ error- file:d3full01 iam= 0 where= 8944771 read 0 of 65536.But after I replaced the car with a rigid block and changed it to a modified fast impact, no error occurred.My model operation uses the MPP method, and adds rigid bodies to the model that needs to continue the analysis, replacing the original rigid planes. Do you have any good suggestions for the problem I am experiencing? Thank you very much!

[Andreas Koutras]

Hello, have you attemped a full restart with your modified model ("car with a rigid block and changed it to a modified fast impact"), or with a diffent model? Are there any other related warning or error messages? Have you tried with a newer LS-DYNA version?

[日凯 林]

 

Thank you for your reply, I still have the following error，

 Warning 30014 (INI+14)

    rigid body number 411 has a principal inertia

    at least 3 orders of magnitude apart:

      min= 3.1125E-06

      max= 2.6022E-03

The minimum principal inertia will be reset to 10.00% of the maximum
    plus the sum of nodal rotational inertias.

 

Warning 30313 (INI+313)
    Number of warning messages for rigid bodies
    Have a principal inertia at least 4 orders of magnitude apart= 15
    2-noded nodal rigid body is deleted due to massless node     = 0
    Nodal rigid body deleted due to null inertia tensor          = 0

I used a rigid body to quickly impact the preloaded component and the calculations went very smoothlyand I’m using the version of R12.I’m so confused about this and don’t know what the error is.

 

[Andreas Koutras]

Hello, the node set of the nodal rigid body needs to have mass (see *ELEMENT_MASS if these nodes are not attached to the mesh) such that the nodal rigid body has translational mass and rotational inertia. It also possible to manually specify the inertia properties of a CNRB using *CONSTRAINED_NODAL_RIGID_BODY_INERTIA.