Assign mass to rigid body with no material input

Asmae Birouk
Asmae Birouk Altair Community Member
edited July 2021 in Community Q&A

Hello,

I am doing a simulation of an impact test. I created a sphere body in Geometry and assigned the following preoperties (entity: shell, Type: Rigid body, material: none). The sphere will impact a horizental plate while on free fall. I want to assign a mass to the sphere without assigning material since I am only interested in the reaction of the plate. I know that in the 2021 version, there is an option to input mass when creating the property for the rigid body, but I can't find it in the 2020 version. 

Question: How to assign mass to a rigid body without assigning material in the 2020 version?

Thank you!

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Answers

  • Rogerio Nakano_21179
    Rogerio Nakano_21179 New Altair Community Member
    edited July 2021

    Hi

    I do not know how to do it in Simlab, but for the scenario you explained you could use the /RWALL/SPHER and define mass and initial velocity to it.

    If you use shell mesh and a /RBODY, the material and property data need to be defined for the contact interaction.

    If you would like to take only into account the mass defined in the /RBBODY, you can set the ICoG=4

    I hope this is helpful.

    Regards

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