What is Dsearch in /RWALL - RADIOSS

Neeraj Kumar
Neeraj Kumar Altair Community Member
edited April 2022 in Community Q&A

I am creating a rigid wall using /RWALL, but I am not clear what is Dsearch option in it and how to select it's value.

Thanks.

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Best Answer

  • PaulAltair
    PaulAltair
    Altair Employee
    edited April 2022 Answer ✓

    It is an option for selecting the nodes that are subject to the RWALL, any node within DSearch distance at the start of the simulation will contact the RWALL, if a node is not inside the Dsearch at the start of the run, it won't be affected by the rigid wall even if it reaches it later.

    You can also specify nodes that are included/excluded explicitly by node group, in this case you do not need to define Dsearch

    If you set both Dsearch and Node Group then both will be included, or alternatively you can use Dsearch and a group of nodes to exclude.

    Typically you would set it big enough to capture everything that might reasonably contact the wall, so e.g. it would be in the order of 10s or hundreds of mm, not like a contact gap.

Answers

  • PaulAltair
    PaulAltair
    Altair Employee
    edited April 2022 Answer ✓

    It is an option for selecting the nodes that are subject to the RWALL, any node within DSearch distance at the start of the simulation will contact the RWALL, if a node is not inside the Dsearch at the start of the run, it won't be affected by the rigid wall even if it reaches it later.

    You can also specify nodes that are included/excluded explicitly by node group, in this case you do not need to define Dsearch

    If you set both Dsearch and Node Group then both will be included, or alternatively you can use Dsearch and a group of nodes to exclude.

    Typically you would set it big enough to capture everything that might reasonably contact the wall, so e.g. it would be in the order of 10s or hundreds of mm, not like a contact gap.

  • Neeraj Kumar
    Neeraj Kumar Altair Community Member
    edited April 2022
    Paul Sharp_21301 said:

    It is an option for selecting the nodes that are subject to the RWALL, any node within DSearch distance at the start of the simulation will contact the RWALL, if a node is not inside the Dsearch at the start of the run, it won't be affected by the rigid wall even if it reaches it later.

    You can also specify nodes that are included/excluded explicitly by node group, in this case you do not need to define Dsearch

    If you set both Dsearch and Node Group then both will be included, or alternatively you can use Dsearch and a group of nodes to exclude.

    Typically you would set it big enough to capture everything that might reasonably contact the wall, so e.g. it would be in the order of 10s or hundreds of mm, not like a contact gap.

    Thanks Paul Sharp.

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