Femap to adina 的螺旋桨分析步骤
http://www.adina.com/xw-prop-movie.gif Direct Femap Interface in ADINA — Structural Analysis Example The ADINA User Interface (AUI) program offers comprehensive pre- and post-processing capabilities for the complete suite of ADINA Solution programs – Structures, Thermal, CFD, Electromagnetics and Multiphysics. However, other third-party pre- and post-processors can also work with the ADINA solvers and may offer certain advantages. For example, Femap contains interfaces to certain CAD packages not currently supported by the AUI, such as interfaces to ACIS, CATIA and Pro/ENGINEER (now called Creo Elements/Pro). With the direct Femap interface in ADINA, users can benefit from their familiarity with Femap and leverage the advantages of Femap in pre- and post-processing with the powerful features of the ADINA solvers. In this Brief, we demonstrate the direct Femap interface in ADINA for a propeller model that involves glueing (which allows different meshes for the glued components), contact and a preload bolt in static analysis followed by a frequency analysis. Figure 1 shows the geometry of the assembly of the propeller model with five components. The bottom of the shaft is fixed and centrifugal loading is applied to the whole model. In addition, pressure load is applied to the three blades.http://www.adina.com/xw-prop-fig_1.jpg
Figure 1Schematic of propeller model
As shown in Figure 2, the first glue region is between the blade and blade root and the second one is between the blade root and outer surface of the hub. Two contact regions are also defined between the bottom of the cap and the top of the hub as well as the top of the shaft and the bottom of the hub. In addition, a bolt element (not shown in Figure 2) is employed to connect the cap and the shaft with a preload.
http://www.adina.com/xw-prop-fig_2.jpg
Figure 2Locations of contact and glue regions
We demonstrate the ease of using the direct Femap interface in ADINA with the following step-by-step analysis. Step 1: Import the geometry model into Femap and clean it up Step 2: Define the material properties and mesh with 3D solid elements http://www.adina.com/xw-prop-step_2.jpg
Step 3: Create bolt element and rigid elements that connect the cap and hub to the bolt element http://www.adina.com/xw-prop-step_3.jpg
Step 4: Apply bolt preload, body load of rotational velocity in global X direction and pressure load on the three blades http://www.adina.com/xw-prop-step_4.jpg
Step 5: Apply constraints at the bottom of the shaft and fix the rotation DOFs of the bolt element Step 6: Define the glueing property with default values. Create the glue regions and the corresponding connectors of glueing http://www.adina.com/xw-prop-step_6.jpg
Step 7: Define the contact property with "Friction Param 1=0.2". Create contact regions and the corresponding connectors of contact http://www.adina.com/xw-prop-step_7.jpg
Step 8: Perform the nonlinear static analysis using the direct Femap interface in ADINA Enter the Job Name and Heading (if desired) in the ADINA Analyze window, select options as shown, and run ADINA to solve the model. http://www.adina.com/xw-prop-step_8.jpg
Step 9: Define settings for frequency/modes analysis Set "Number of Frequency/Mode Shapes" equal to 10. http://www.adina.com/xw-prop-step_9.jpg
Step 10: Define settings for restart analysis (to calculate frequencies) Check "Restart Previous Analysis" and select "Propeller_a.res" as the file in the field "Restart Data from". http://www.adina.com/xw-prop-step_10.jpg
Step 11: Perform frequency analysis using the direct Femap interface in ADINA Note that the analysis is performed in the deformed configuration corresponding to all loads and contact conditions. Enter the Job Name and Heading (if desired) in the ADINA Analyze window, select options as shown, and run ADINA to solve the model. http://www.adina.com/xw-prop-step_11.jpg
Step 12: Load the results through the Femap neutral file Enter the Femap Neutral File name to load the results for post-processing. http://www.adina.com/xw-prop-step_12.jpg
Figures 3 and 4 show results obtained from the above two analyses, visualized in Femap. The results of the frequency analysis are also shown in the movie above.
http://www.adina.com/xw-prop-fig_3.jpg
Figure 3Band plot of von Mises stress
http://www.adina.com/xw-prop-fig_4.jpg
Figure 4First mode shape with band plot of total translation
Finally, users who are familiar with the AUI can also load the results into the AUI for post-processing since it provides some additional features that are not available in Femap. For example, the AUI allows the user to plot error indicators as a guide for determining the accuracy of the solution and where the mesh should be refined. The entire analysis, from pre-processing to post-processing, is performed within the Femap environment using the direct Femap interface in ADINA. Users already familiar with Femap can adapt easily to analyses using ADINA, and thereby have access to more analysis options within Femap. We recognize that the ADINA CAD/CAE interfaces are important and also Femap with ADINA CFD and FSI provides a powerful analysis tool.
Keywords:
Femap, Nastran, pre-processor, post-processor, glueing, contact, frequencies, bolt element, CAD, CAE
http://www.adina.com/ADINA_footer.gif beautiful~~~~ 这个接口哪里有下载啊？要有这个接口前后处理应该方便不少了.... 膜拜楼主的adina水平~
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