ABAQUS如何画XY曲线图3.doc

D.11.2Combining the data objectsIn this section you will create a stress versus strain data object by combining the stress versus time and strain versus time data objects. To combine the data objects:1. In the Results Tree, double-click the XYData container.2. From the Create XY Data dialog box that appears, select Operate on XY data and click Continue.An Operate on XY Data dialog box appears. The dialog box contains the following lists: The XY Data field on the left contains a list of existing XY data objects. The Operators field on the right contains a list of all the possible operations you can perform on the data objects.3. From the Operators field, click combine(X,X).combine( ) appears in the expression text field at the top of the dialog box.4. In the XY Data field, drag the cursor across both the Strain and the Stress data objects to select both and click Add to Expression near the bottom of the dialog box.The expression combine(Strain,Stress) appears in the expression text field. In this expression Strain will determine the X-values and Stress will determine the Y-values in the combined plot.5. From the buttons along the bottom of the Operate on XY Data dialog box, click Save As. 6. From the Save XY Data As dialog box that appears, enter the name Stress-Strain and click OK.The new data object Stress-Strain appears in the XYData container.7. Cancel the Operate on XY Data dialog box.以上部分讲的就是如何利用已有的应力时间,应变曲线得到应力应变曲线了(1)在右侧函数栏中单击一下功夫combine()(2)在函数栏左边的变量列表中双击一下XYDATA_STRAIN(3) 在函数栏左边的变量列表中双击一下XYDATA_STRESS(4)单击下面的SAVE AS按钮起个名字,关闭该对话框(5)双击图中阴影部分就可以了D.11.3Plotting and customizing the stress-strain curveYou will now use the Stress-Strain data object that you just created to plot the stress-strain curve.这部分讲的就是如何给应力应变曲线设置标题,栅格以及如何从应力应变曲线中获得曲线上某点的数值并保存到文件中去,看看就可以了,很简单的.To plot the stress-strain curve:1. In the XYData container, double-click Stress-Strain. A plot of the stress-strain curve appears in the viewport.2. Your plot of stress versus strain inherited the customized chart settings from your previous plot. To restore the default chart options, do the following:a. Open the Chart Options dialog box.b. Toggle off Major in both the X Grid Lines and Y Grid Lines fields.c. Click Dismiss.3. The plot of stress versus strain appears, as shown in Figure D14. In this figure, the visibility of the plot legend has been suppressed (open the Chart Legend Options dialog box; in the Contents tabbed page, toggle off Show legend). Figure D14 XY plot of stress versus strain. D.12Probing an XY plotYou can use the Query toolset in the Visualization module to probe your model and XY plots. You can also write the resulting probe values to a file. In this tutorial you will use the probe capability to obtain X- and Y-values from your stress/strain plot and to write these values to a file.To probe an XY plot:1. From the main menu bar, select ToolsQuery; select Probe values from the Query dialog box.The Probe Values dialog box appears. Because an XY plot is in the current viewport, this dialog box will display XY curve data.2. At the top of the dialog box, toggle on Interpolate between points. This option allows you to select arbitrary points along the curve.3. In the viewport, position the cursor over the XY curve.When the arrow at the cursor approaches the XY curve, the point being probed is highlighted and information about it, including the corresponding XY coordinates, appears in the Probe Values table.4. Click at various points along the curve.The points are added to the Selected Probe Values table.5. When you have finished selecting points, click Write to File.The Report Probe Values dialog box appears.By default, the data in the Selected Probe Values table are written to a file called abaqus.rpt in your current directory. The options in this dialog box allow you to change the name of this file and the format of the data written to the file.6. Click OK to write your data to the file.7. From the Probe Values dialog box, click Cancel to exit probe mode.A dialog box appears to inform you that the Selected Probe Values table contains data. Click Yes to indicate that it is OK to continue; the data in the table will be deleted. D.13Displaying results along a pathXY data can be generated for a specific path through your model. In this tutorial you will specify a node list path along the top of the foam block and plot the displacement magnitude along this path.这部分讲的就是如何按照变量随路径的变化了,按以下步骤操作就可以了,关键是要理解自己所建立的变量路径曲线的物理意义了.D.13.1Creating a node list pathA path is a line you define by specifying a series of points through the model. In a node list path all of the specified points are nodal locations. You create a node list path by entering node labels or node label ranges in a table. To determine the node labels of interest, it is helpful to create a model plot with the node labels visible.To create a node list path:1. Click the tool to display the undeformed model shape.Use the Common Plot Options dialog box to display the node labels. Identify the nodes on the top edge of the foam block.2. In the Results Tree, double-click Paths.The Create Path dialog box appears.3. Name the path Displacement. Accept the default selection of Node list as the path type, and click Continue.The Edit Node List Path dialog box appears.4. In the Path Definition table, select PART-1-1 in the Part Instance field, type 1:601:40 in the Node Labels field, and press Enter. (This input specifies a range of nodes from 1 to 601 at increments of 40.) Alternatively, you can pick the nodes for the node list directly from the viewport by clicking Add Before.or Add After. in the Edit Node List Path dialog box.The selected path is highlighted in the plot in the current viewport. 5. Click OK to create the path and to close the Edit Node List Path dialog box.D.13.2Displaying results along a node list pathAbaqus obtains analysis results for each of the points on the path you have defined and generates XY data pairs; the X-values are the specified points in the model, and the Y-values are the analysis results at these points. You can generate an XY plot of the data pairs.To display displacement results along a node list path:1. In the Results Tree, double-click the XYData container.2. In the Create XY Data dialog box that appears, select Path; and click Continue.The XY Data from Path dialog box appears with the path that you created visible in the list of available paths.Accept the default s