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1、实体单元建的模型，要提取截面的内力有什么好方法呢？我看过别人的一个帖：对于一般的实体单元结构可以定义surface 然后用section file 输出其中，这个surface可以在cae中定义，也可以在inp中定义，但是由于涉及到边的编号问题，所以在inp中容易出错。section file 的结果直接在dat中可见。需要编制小程序将其数据提取。？一定要编个程序才可以提取吗？在dat文件里没有找到什么section file是输出在*.fil文件中。要直接得到截面的total force，moment，heat flux可以在inp中添加：*SECTION PRINT,name=*,surf
2、ace=*SOF,SOM在dat文件中可以找到总内力和弯矩我做钢筋混凝土的问题，模型分为两个part，分别是钢筋和混凝土，然后Assembe在一起，将钢筋embeded到混凝土内。我在keywords编辑器End assemble前定义*surface, type=cutting surface,name=surface_1-21.5,0,0,1,0,0怎么也不成，总说定义的截面没有相交(坐标计算没有错误)。第三行空着（帮助文档说表示截断整个模型）也不行，写上钢筋或混凝土的单元组名（没有另建组，直接用的keywords编辑器中钢筋或混凝土生成单元的组名）也不行。请问是怎么回事？哪位有相关的例子
3、给我一个，我的QQ：40735053。还望不吝赐教，谢谢。Displaying a free body cutYou can define a free body cut to view the resultant forces and moments transmitted across a selected surface of a model. Force vectors are displayed with a single arrowhead and moment vectors with a double arrowhead.To create a free body cut:1.
4、 To display the entire model in the viewport, selectToolsDisplay GroupPlotAllfrom the main menu bar.2. From the main menu bar, selectToolsFree Body CutManager.3. ClickCreatein theFree Body Cut Manager.4. From the dialog box that appears, select3D element facesas theSelection methodand clickContinue.
5、5. In theFree Body Cross-Sectiondialog box, selectSurfacesas theItemandPick from viewportas theMethod.6. In the prompt area, set the selection method toby angleand accept the default angle.7. Select the surface, highlighted inFigure 433, to define the free body cut cross-section.a. From theSelection
6、toolbar, toggle off theSelect the Entity Closest to the Screentooland ensure that theSelect From All Entitiestoolis selected.b. As you move the cursor in the viewport, Abaqus/CAE highlights all of the potential selections and adds ellipsis marks (.) next to the cursor arrow to indicate an ambiguous
7、selection. Position the cursor so that one of the faces of the desired surface is highlighted, and click to display the first surface selection.Figure 433Selected faces for the free body cross-section.c. Use theNextandPreviousbuttons to cycle through the possible selections until the appropriate ver
8、tical surface is highlighted, and clickOK.8. ClickDonein the prompt area to indicate your selection is complete. ClickOKin theFree Body Cross-Sectiondialog box.9. In theEdit Free Body Cutdialog box, accept the default settings for theSummation Pointand theComponent Resolution. ClickOKto close the di
9、alog box.10. ClickOptionsin theFree Body Cut Manager.11. From theFree Body Plot Optionsdialog box, select theForcetab in theColor & Styletabbed page. Click the resultant color sampleto change the color of the resultant force arrow.12. Once you have selected a new color for the resultant force arrow,
10、 clickOKin theFree Body Plot Optionsdialog box and clickDismissin theFree Body Cut Manager.The free body cut is displayed in the viewport, as shown inFigure 434.Figure 434Free body cut displayed on the connecting lug.Generating tabular data reports for subsets of the modelTabular output data were ge
11、nerated earlier for this model using printed output requests. However, for complicated models it is convenient to write these data for selected regions of the model using Abaqus/Viewer. This is achieved using display groups in conjunction with the report generation feature. For the connecting lug pr
12、oblem we will generate the following tabular data reports: Stresses in the elements at the built-in end of the lug (to determine the maximum stress in the lug) Reaction forces at the built-in end of the lug (to check that the reaction forces at the constraints balance the applied loads) Vertical dis
13、placements at the bottom of the hole (to determine the deflection of the lug when the load is applied)Each of these reports will be generated using display groups whose contents are selected in the viewport. Thus, begin by creating and saving display groups for each region of interest.To create and
14、save a display group containing the elements at the built-in end:1. In the Results Tree, double-clickDisplay Groups.2. ChooseElementsfrom theItemlist andPick from viewportas the selection method.3. Restore the option to select entities closest to the screen.4. In the prompt area, set the selection m
15、ethod toby angle; and click the built-in face of the lug. ClickDonewhen all the elements at the built-in face of the lug are highlighted in the viewport. In theCreate Display Groupdialog box, clickReplacefollowed bySave As. Save the display group asbuilt-in elements.To create and save a display group containing the nodes at the built-in end:1. In theCreate Display Groupdialog box, chooseNodesfrom theItemlist andPick from viewportas the selection method.2. In the prompt area, set the selection method toby angle; and click the built-in face of the lug. ClickDonewhen all the
