How to solve parts with non rigid material in interface

marsicano
marsicano Altair Community Member
edited January 2021 in Community Q&A

Hallo everyone!

I am running a simulation in hypermesh using LS Dyna interface.

When I was checking my model, The error  "parts with non rigid material in interface" appeared.

This kind of error is located between the rigid wall and a cylindrical element (blue)

Kindly, could someone tell me how to solve this problem?

I attached a picture about the error

Regardes

 

6.jpg 129K
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Answers

  • PaulAltair
    PaulAltair
    Altair Employee
    edited January 2021

    Hi, it looks like you are using a card image for the DYNA Contact specifically for Rigid surfaces, this requires the entities involved to be rigid. Regardless of whether your part/parts are rigid, these contacts are seldom used in DYNA in practice, I would recommend you switch to a more commonly used contact type, such as Auto-Node-Surface, Auto-Surface-Surface or Auto-General. You also mention a 'rigid wall' if you have a rigid wall entity, (as opposed to a rigidised mesh representing a wall) then the rigid wall wouldn't require a separate contact definition.

  • marsicano
    marsicano Altair Community Member
    edited January 2021
    Paul Sharp_21301 said:

    Hi, it looks like you are using a card image for the DYNA Contact specifically for Rigid surfaces, this requires the entities involved to be rigid. Regardless of whether your part/parts are rigid, these contacts are seldom used in DYNA in practice, I would recommend you switch to a more commonly used contact type, such as Auto-Node-Surface, Auto-Surface-Surface or Auto-General. You also mention a 'rigid wall' if you have a rigid wall entity, (as opposed to a rigidised mesh representing a wall) then the rigid wall wouldn't require a separate contact definition.

    Many thanks Paul I changed the contact and it is better now.

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