Defining COG Point

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi,

I have a ship model with COG coordinates and total displacement given to me with fully loaded condition.

But in my model, I am not modelling each details. So I think I can achieve the total displacement of ship by adding admas to it.

 

But my query:

1. How can I locate my COG point of whole model once all the setup is done. (I guess COG will not match with the given data as not modelling with minute details) 

2. How can I change the COG point if it is not matching with the provided data. (Model is flexible, no rigid parts to be model).

3. How can I visualise the COG point before or after modification of coordinates.

 

Thanking You.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    could you add pic? it will be helpful to understand your issue.

  • gopal_rathore
    gopal_rathore Altair Community Member
    edited June 2018
    Altair Forum User said:

    Hi,

    I have a ship model with COG coordinates and total displacement given to me with fully loaded condition.

    But in my model, I am not modelling each details. So I think I can achieve the total displacement of ship by adding admas to it.

     

    But my query:

    1. How can I locate my COG point of whole model once all the setup is done. (I guess COG will not match with the given data as not modelling with minute details) 

    2. How can I change the COG point if it is not matching with the provided data. (Model is flexible, no rigid parts to be model).

    3. How can I visualise the COG point before or after modification of coordinates.

     

    Thanking You.

    Go to post>summary 

     

    Then load the solver profile and the centre of gravity under the same

     

    With this you can view the centre of gravity value of the model or part etc. and compare it with the given data of cg coordinates

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018
    Altair Forum User said:

    1. How can I locate my COG point of whole model once all the setup is done. (I guess COG will not match with the given data as not modelling with minute details) 

     

    Hi,

     

    You can use the Summary module to get the CoG. Goto Post>>Summary>>load the RADIOSS>> CoG script and check the CoG

     

    Isn't that CoG depends on the model? So you may have to tweak the model without adding Rigids

     

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