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詳細なシェル FEA

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  2. 詳細なシェル FEA
  3. ビーム シェル FEA – 入門
  4. チュートリアル 1. メンバーシェルFEA

チュートリアル 1. メンバーシェルFEA

この例では, we will demonstrate how to analyze a member made from a thin steel plate profile. The profile has the channel section with a plate thickness of 1.5 mm and a length of 1500 んん. Diaphragms, with a thickness of 20 んん, are attached to both ends of the member. Boundary conditions are applied at the member’s ends: the left side is rolled while the opposite end is pinned. The material properties for the parts are defined with a yield strength (fy) の 355 MPa. The member is subject to an axial compressive force of 1000 kN.

To see this analysis in action and gain a better understanding, watch the quick video demonstration provided below:

The upcoming analysis will encompass both geometric and material nonlinearity. It also offers real-time tracking of the load-displacement curve, enabling an in-depth investigation of the member’s capacity while optimizing computational time. The results will provide insights into the member’s capacity, its deformed state, and its failure status.

ステップ 1. Model Parts

Go to the ‘Main Partsmenu and select the ‘PROFILE’ タブ. Input the edges for both the starting (私) and ending (j) セクション. To input the sections’ ジオメトリ, you can import a DXF file stored locally on your PC. The dxf file can be received from ここに

Go to the ‘SCHEME’ タブ. Set the member length to 1500 んん. Add diaphragms to the ends, selecting the ‘Polygon’ タイプ. The edges for the diaphragm are defined in a popup window that appears when you click on the ‘Diaphragm Edgescolumn cell. In the ‘DIAPHRAGM INPUT’, select the edges that form the diaphragm shape and input the thickness (t).

ステップ 2. かみ合い

Navigate to the ‘Meshing’ メニュー. Set the FE element size to 15 んん, then click the ‘Generate’ ボタン. The color of mesh can by updated by the plate thickness (‘SETTINGS’ > ‘Mesh color by’)

ステップ 3. 欠陥

Navigate to the ‘Imperfection’ メニュー. Set the settings, then click the Preview’ ボタン.

ステップ 4. Boundaries and Load

Navigate to the ‘Boundaries‘ > ‘Rigid Ends’ menu. Set the end boundary constrains. Navigate to the ‘Loads‘ > ‘Rigid Ends’ menu. Apply an axial load of 1000 kN to the left end of the member for compression.

ステップ 5. Analysis and Load-Displacement tracking

Navigate to the ‘Analysis‘ menu. Select Nonlinear Explicit including geometry and material nonlinearity. Click ‘Perform Analysis’ button.

 

While the analysis is in progress, navigate to ‘Chart’ menu. 最初, select a node to measure the Ux displacement (ステップ 1 そして 2). その後, using frame selection, choose nodes from which to extract the Rx reaction forces (ステップ 3 そして 4). Monitor the chart’s changes to identify the critical force (Pcr) that leads the structure to failure. Terminate the ongoing analysis once the failure state is detected.

ステップ 6. 結果

Navigate to the ‘Results’ メニュー, choose your preferred results options, and click ‘Displayto view the deformed state of the model.

 

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