FEMeshSurface

This chapter describes the OpenBrIM Library Core Object "FEMeshSurface" and its usage. The "FEMeshSurface" is used to create shell elements with different node restrictions and properties.

The mesh can be created in any plane.

The accuracy that can be obtained from the Finite Element Model created in the system is directly dependent on the finite element mesh used. Finite Element mesh (mesh) is used to divide the 3D model into smaller areas called elements, on which a set of equations is solved.

The mesh size should be chosen carefully to ensure that the model is not over-meshed and that the computation time is reasonable. A too fine mesh size increases the computational time, and a too coarse mesh size will result in an inaccurate analysis.
The mesh size should be such that the element size is small enough to capture the details of the model, but large enough to keep the computation time reasonable.

Example Syntax:

 ...
    <O N="MESH" T="FEMeshSurface" CX="12" CY="12" ConstraintPts="[]" Thickness="10" Material="@NULL|Material" Surface="@NULL|Surface" CoorSys="@NULL|CoorSys" Group="@NULL|FEGroup">
        <O T="Surface">
            <O T="Point" X="0" Y="0" />
            <O T="Point" X="240" Y="0" />
            <O T="Point" X="240" Y="240" />
            <O T="Point" X="0" Y="240" />
        </O>
    </O>
...
...
</O>

In the OpenBrIM library, operating a Core Object can be done through the command line by typing "<ObjectName..." and highlighting the desired object, then pressing the "Tab" key on the keyboard.

This process will display the components of the selected object on the command line and can be done for any core object.

Library Core Object Component

Example:

<O N="FEMeshObject1" T="Project" Category="FEM Objects" TransAlignRule="Right">
    <!-- created by ParamML Examples on 07.02.2023 -->
    <O N="MESH" T="FEMeshSurface" CX="12" CY="12" ConstraintPts="[]" Thickness="10" Material="@NULL|Material" Surface="@NULL|Surface" CoorSys="@NULL|CoorSys" Group="@NULL|FEGroup" IsConstraint="1">
        <O T="Surface">
            <O T="Point" X="0" Y="0" />
            <O T="Point" X="240" Y="0" />
            <O T="Point" X="240" Y="240" />
            <O T="Point" X="0" Y="240" />
        </O>
    </O>
</O>

Analytical View

The object in question has three defined parameters: Surface, CX, and CY (or CZ). The FEMeshSurface function generates a mesh on the defined Surface.
CX and CY parameters set the mesh sizes along their respective directions.
The CX and CY parameters control the mesh size in their respective directions, creating a node every 12 units in the X direction and every 12 units in the Y direction. If the values of CX and CY are increased, the mesh grid will also become larger.

<O N="FEMeshObject1" T="Project" Category="FEM Objects" TransAlignRule="Right">
    <!-- created by ParamML Examples on 07.02.2023 -->
    <O N="MESH" T="FEMeshSurface" CX="48" CY="48" ConstraintPts="[]" Thickness="10" Material="@NULL|Material" Surface="@NULL|Surface" CoorSys="@NULL|CoorSys" Group="@NULL|FEGroup" IsConstraint="1">
        <O T="Surface">
            <O T="Point" X="0" Y="0" />
            <O T="Point" X="240" Y="0" />
            <O T="Point" X="240" Y="240" />
            <O T="Point" X="0" Y="240" />
        </O>
    </O>
</O>

To view this example in the library, see (OpenBrIM Platform)

Under this heading, the parameters of the FEMeshSurface object will be explained. Please proceed to the subpage (childpage).

OpenBrIM

FEMeshSurface

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