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Linear Gap

User: "Mert Atak"
Mert Atak
Altair Community Member
Updated by Mert Atak

 

Hi,

We are trying to use linear gap tool in aerospace. But it is working, z+ and z- directions like rigid elements. Can you send us an video and simple example for using linear gap tool.

 Thank you so much

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    User: "Rishabh"
    Rishabh
    Altair Employee
    Updated by Rishabh

    Hello Mert 

    Based on the document for Linear Gap tool , the linear gap is created consists of MPC, SPC, SPOINTS and SUPPORT. I would recommend to follow the tutorials for understanding the steps to setup a linear gap analysis for airplane wing rib :  

    https://help.altair.com/hwsolvers/os/topics/solvers/os/airplane_wing_rib_r.htm.

    Based on the documentation :  Linear gap does not include friction, large displacements, and material non-linearity. The linear gaps provide for simple contact (compressive) forces only. MPC’s are used to define the gaps. The displacements and MPC-forces are used to determine if each gap is "welded" or "free". The solution converges when there is no penetration of MPC's (gap deflection >= 0.0) and there are no tensile forces. An iterative procedure (CDITER-constrained displacement iterative technique) is used to solve the model based on displacements/MPC forces. 

    Regarding your issue : "But it is working, z+ and z- directions like rigid elements " . Can you share the model setup for your simulation

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