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Effect of WARPAGE

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

Hi to all,
 
 
 What is the effect in results if the warpage failed (What is the failure and how can we find the failure result because of warpage) can u give clear idea

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    User: "Rahul Rajan_21763"
    New Altair Community Member
    Updated by Rahul Rajan_21763

    Hi,

    In simple words Warpage is out of plane angle (applicable for quad elements)

    Result quality is directly proportional to element quality.

    With check elements panel you can check specific element quality failure and quality index panel help to improve element quality.

    Normally warpage failure will happen on curved surfaces.

    For simple geometry warpage should be lesser then 7degreee and for complex it should be lesser than 15 degree.(criteria taken from practical aspect of finite element simulation book)

    No universal guideline are available for quality check.

    Regards

    Rahul R

    User: "Rahul_P1"
    Altair Employee
    Updated by Rahul_P1

    see  HyperWorks Desktop Applications > HyperMesh > User's Guide > Meshing > Checking & Editing Mesh > Element Quality:

    How Element Quality is Calculated

     

    This is the amount by which an element (or in the case of solid elements, an element face) deviates from being planar. Since three points define a plane, this check only applies to quads. The quad is divided into two trias along its diagonal, and the angle between the trias’ normals is measured.

    hm_warpage.png

    Warpage of up to five degrees is generally acceptable.

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi Rahul,

     

    What about the case if second order quad is considered. QUAD8.

    User: "Rahul_P1"
    Altair Employee
    Updated by Rahul_P1

    I would say the same calculation method etc should apply, 

    User: "Altair Forum User"
    Altair Employee
    OP
    Updated by Altair Forum User

    Thank You all 

     

      But the thing is suppose my element is failed due to warpage in meshing i havn't clear the quality of warpage. If i export this model to any solver and see the results what will be the effect in the results (if my element is failed with warpage) 

    User: "Rahul_P1"
    Altair Employee
    Updated by Rahul_P1

    The results may not be accurate enough, see the ebook - practical aspects of FEA - http://www.altairuniversity.com/free-study-guide-book/