What does this lenght indicate in Motion view in 2023.1

Tejas
Tejas Altair Community Member
edited April 26 in Community Q&A

Hello While doing analysis in motion view i stuck in between spring alignment of mechanism. my que is whether this length in preload option ofspring alignment what it indicates free length of a spring or difference between installed and freelenght of spreeng which is (delta u ). 

Thnku in advance .

 

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Best Answer

  • Praful
    Praful
    Altair Employee
    edited April 26 Answer ✓

    Hi Tejas - the Length field does indicate the free length. By default  the value is set to match with the installed length (the distance between the 2 points in the spring).

    Praful

Answers

  • Praful
    Praful
    Altair Employee
    edited April 26 Answer ✓

    Hi Tejas - the Length field does indicate the free length. By default  the value is set to match with the installed length (the distance between the 2 points in the spring).

    Praful

  • GTT Adam
    GTT Adam
    Altair Employee
    edited April 26
    Praful Prabhu_20784 said:

    Hi Tejas - the Length field does indicate the free length. By default  the value is set to match with the installed length (the distance between the 2 points in the spring).

    Praful

    Hi Tejas,

    Praful is correct, as the greyed-out field for Length by default displays the spring's current installed length. Since it is greyed-out, it is not being used. This calculation is reflected by an expression that is used in the Length field, indicated by the blue corner triangle:

    image

    If we look into the Length field, you can see the following expression:

    image

    To set the free length of the spring for spring preload, you can change the Preload Option from Force to Length or Force and Length, and then overwrite the expression.

    If you ever want to know what the installed length of the spring is, you can look below in the Distance between points field and see the MAG value. 

     

    Hope this helps!

    Adam Reid

  • Tejas
    Tejas Altair Community Member
    edited April 26

    Thank You Praful for your valuable and quick reply. Ok, now I can use free length of spring in preload option.

     

  • Tejas
    Tejas Altair Community Member
    edited April 26
    Adam Reid_21142 said:

    Hi Tejas,

    Praful is correct, as the greyed-out field for Length by default displays the spring's current installed length. Since it is greyed-out, it is not being used. This calculation is reflected by an expression that is used in the Length field, indicated by the blue corner triangle:

    image

    If we look into the Length field, you can see the following expression:

    image

    To set the free length of the spring for spring preload, you can change the Preload Option from Force to Length or Force and Length, and then overwrite the expression.

    If you ever want to know what the installed length of the spring is, you can look below in the Distance between points field and see the MAG value. 

     

    Hope this helps!

    Adam Reid

    Thank You Adam for your valuable Answer.

    Yes I can see both options in prelad.

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