版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、WORKSHOP 7PARASOLID SOLID EXAMPLE,PAT301, Workshop 7, May 2002,WS7-1,Problem Description Create a parasolid solid model of a tension fitting. This is done using some of the parasolid tools in MSC.Patran, e.g. boolean. Create a tet10 solid element mesh model, including the needed load and constraint,
2、 material and element properties, and analysis input. Run the finite element analysis using MSC.Nastran. Then, display the deformation and stress results in Patran.,Suggested Exercise Steps Create a new database for the tension fitting model. Create all the necessary 2D Geometry. Extrude the surface
3、 to begin creating the solid model. Create a solid shell by removing part of the solid. Create fillets for all inside edges of the solid. Create holes for the model by creating solid cylinders that pass through it, and then use boolean to subtract the cylinders. Create cylinders to imprint the model
4、. Imprint the solid using the cylinders. Delete the cylinders used for imprinting. TetMesh the completed solid Create loads and constraints on the model that will be used in the analysis. Create material properties for the model. Create the 3D element properties. Check to see that the load case Defa
5、ult has the load and constraint. Run the analysis by sending the model to MSC.Nastran. Access the results by attaching the XDB file. Post-process the results from MSC Nastran.,Step 1. Create New Database for Tension Fitting,Create a new database called tension_fitting.db. a. File / New. b. Enter ten
6、sion_fitting as the file name. c. Click OK.,Step 2. Create Surface,Create the Geometry for the tension fitting. a. Geometry : Create / Surface / XYZ. b. Enter for Vector Coordinates List. c. Enter 0 0 0 for Origin Coordinates List. d. Click Apply.,Step 2. Create Surface (Cont.),Copy points at opposi
7、te corners. a. Click increase Point Size icon to show all points enlarged. b. Geometry : Transform / Point / Translate. c. Enter for Translation Vector. d. Select top-left corner and click Apply. e. Enter for Translation Vector. f. Select bottom-right corner and click Apply.,Step 2. Create Surface (
8、Cont.),Create a curve by connecting the two translated points and break the surface with the curve. a. Geometry : Create / Curve / Point. b. Click on one of the two points from translation as the starting point and the other as the ending point. c. Click Apply.,Step 2. Create Surface (Cont.),Break t
9、he surface and delete the upper portion of the original surface. a. Geometry : Edit / Surface / Break. b. Select the rectangular surface for the Surface List and the sloped curve for the Break Curve List. c. Click Apply and Yes when message box appears. d. Click the Refresh Graphics icon.,Step 2. Cr
10、eate Surface (Cont.),Delete the upper surface (above the break curve). a. Geometry : Delete / Surface. b. Click on the triangular surface for the Surface List. c. Click Apply.,Create a parasolid solid by extruding the surface in the z-direction. a. Geometry : Create / Solid / Extrude. b. Make sure T
11、etMeshable solid icon is selected. c. Enter for the Translation Vector. d. Click Apply. e. Click Iso1 view. f. Click the Smooth- shaded icon.,Step 3. Extrude the Surface to Create Solid,Step 4. Create a solid shell,Edit the solid using the shell method to create a shelled solid. a. Geometry : Edit /
12、 Solid / Shell b. Enter 0.25 for Thickness. Turn off Auto Execute. c. Click on Solid Face List and hold down the shift button and select the top, sloped, and front faces of the solid. d. Click Apply.,Step 5. Create Fillets,Create the fillets on the inner edges of the solid. a. Geometry : Edit / Soli
13、d / Edge Blend. b. Make sure that the constant radius icon is selected. c. Enter 0.25 for Constant Radius. d. Make sure Edges of Solid icon is selected. e. Click on Solid Edge List and use the shift-click technique and select the 3 edges on the inside of the solid. f. Click Apply.,It may be necessar
14、y to rotate the object in order to see then inner edges more easily. This can be done by holding the middle mouse button and moving the mouse.,Step 6. Create Holes for the Tension Fitting,Create the holes for the tension fitting by creating primitive solids that pass through the solid, then subtract
15、ing them. a. Geometry : Create / Solid / Primitive. b. Select the cylinder icon c. Enter 2.0 for the Height and 0.25 for the radius. d. Enter -1 1.25 1 for the Base Center Point List and Coord 0.1 for the Axis List. e. Click Apply. f. Geometry : Edit / Solid / Boolean. g. Select Subtract icon. h. Se
16、lect the tension fitting for the Target Solid. i. Select the cylinder for the Subtracting Solid List. j. Click Apply.,Step 6. Create Holes for the Tension Fitting (Cont.),Create the points where the three bottom holes will be placed by translating an existing point and, then translating again. a. Cl
17、ick wireframe icon. b. Geometry : Transform / Point / Translate. c. Enter for Translation Vector. d. Select point at base edge of fillet and click Apply. e. Enter for Translation Vector. f. Select translated point and click Apply. g. Enter for Translation Vector. h. Enter 2 for repeat count. i. Sele
18、ct translated point and click Apply.,Step 6. Create Holes for the Tension Fitting (Cont.),Create cylinders using points as base centers and then create holes by subtracting them from the solid. a. Click Smooth shaded icon. b. Geometry : Create / Solid / Primitive. c. Select cylinder icon. d. Enter -
19、1.0 for Height List and 0.125 for Radius List. e. Use the shift-click technique to select the three translated points for Base Center Point List. f. Enter Coord 0.2 for axis list and click Apply. g. Geometry : Edit / Solid / Boolean. h. Select subtract icon i. Select tension fitting as Target Solid.
20、 j. Shift-click all three cylinders for Subtracting Solid List. k. Click Apply.,It may be necessary to rotate the object several times in order to select the cylinders with ease,Step 7. Create Cylinders to Imprint Tension Fitting,Create a point in the center of the big hole in order to create the cy
21、linder to imprint onto the solid. Then create all four cylinders that will be used for Imprinting. a. Click wireframe icon. b. Geometry : Create / Point / ArcCenter. c. Select the larger hole edge. d. Geometry : Create / Solid / Primitive. e. Select cylinder icon f. Enter 1.0 for Height and 0.371 fo
22、r Radius. g. Click on point in the center of the big hole. h. Enter Coord 0.1 for Axis List. i. Click Apply. j. Select Smooth Shaded icon.,Step 7. Create Cylinders to Imprint Tension Fitting (Cont.),Now, create the three cylinders that will be used to imprint the base of the tension fitting. a. Clic
23、k wireframe icon. b. Geometry : Create / Solid / Primitive. c. Select cylinder icon d. Enter 0.5 for Height and 0.298 for Radius. e. Shift-click on point in the center of each of the base holes. f. Enter Coord 0.2 for Axis List. g. Click Apply. h. Select Smooth Shaded icon.,Step 8. Imprint the Solid
24、,Use the cylinders to imprint the solid and then delete the cylinders, resulting in the finished solid. a. Geometry : Edit / Solid / Imprint. b. Shift-click all four cylinders under Imprinting Solid List. c. Select the tension fitting for the Imprinted Solid List. d. Click Apply.,The solid may seem
25、unchanged, but the imprints on the solid will not be visible until the all the cylinders have been deleted.,Step 9. Delete the Cylinders,Delete the cylinders and make sure imprint method was completed. a. Geometry : Delete / Solid b. Shift-click all four cylinders for Solid List. c. Click Apply.,The
26、 imprints created from the previous step are now visible. Imprinting is used to show where washers on an object will be placed. It allows for application of a total load over the imprinted area, which will be performed later,Step 10. TetMesh the Completed Solid,Create the TetMesh for the tension fit
27、ting. a. Elements : Create / Mesh / Solid. b. Make sure Tet, TetMesh, and Tet10 are all selected. c. Click on Input List and select all solid. d. Remove check for Automatic Calculation and enter 0.25 for Global Edge Length. e. Click Apply.,Step 11. Create Loads and Constraints,Create the loads and c
28、onstraints for the model. Click Smooth Shaded icon Loads/BCs : Create / Total Load / Element Uniform. Enter Force as the New Set Name. Click Input Data Enter for the Load and click OK. Click Select Application Region Select the vertical solid face created by imprinting at the larger hole, then click
29、 Add. Click OK Click Apply.,Illustrated here is the desired application region.,Step 11. Create Loads and Constraints (Cont.),Step 11. Create Loads and Constraints (Cont.),Create the constraints on the base holes. a. Loads/BCs : Create / Displacement / Nodal. b. Enter Fixed as New Set Name. c. Click
30、 Input Data d. Enter for Translation only, and click OK. e. Click Select Application Region. f. Click on Select Geometry Entities. g. Select Surface or Face icon h. Shift-click the surface(inside) of the three holes on the base, and Click Add. i. Click OK. j. Click Apply.,Illustrated here is the des
31、ired application region for one of the three holes.,Step 11. Create Loads and Constraints (Cont.),Step 12. Create Material Properties,Create the material properties for the model. a. Materials : Create / Isotropic / Manual Input b. Enter Aluminum for Material Name. c. Click Input Properties d. Enter
32、 10E6 for Elastic Modulus and 0.3 for the Poisson Ratio. e. Click OK f. Click Apply.,Step 13. Create 3D Element Properties,Create the 3D element properties for the tension fitting. a. Properties : Create / 3D / Solid. b. Enter 3D_tets for Property Set Name. c. Click Input Properties d. Select Alumin
33、um from Material Property Sets for Material Name. e. Click OK f. For Application Region, select entire solid by dragging a box around it and click Add. g. Click Apply.,Step 14. Check the Load Case,Check the load case Default to make sure that the load and constraint are selected. a. Load Cases : Mod
34、ify b. Click on the load case name Default. c. Check to see that both the load and constraints are assigned. d. Click Cancel.,Step 15. Run the Analysis,Run the Analysis with MSC.Nastran. a. Analysis : Analyze / Entire Model / Full Run. b. Click Translation Parameters. c. Make sure XDB and Print is s
35、elected. d. Click OK. e. Click Solution Type f. Make sure LINEAR STATIC is selected. g. Click OK. h. Click Apply.,Step 16. Access the Results,Attach the XDB file and access the results. a. Analysis : Attach XDB / Result Entities / Local. b. Click Select Results File c. Select tension_fitting.xdb and click OK. d. Click Apply.,S
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 辅导班合伙协议书
- 浙教版七年级科学上学期期末培优冲刺专题01科学实验、观察、探究专题特训(原卷版+解析)
- 2021-2022学年河北省雄安新区博奥高级中学物理高一第二学期期末质量检测试题含解析
- 2021-2022学年河北省邯郸市大名县、磁县等六县一中高一物理第二学期期末学业质量监测试题含解析
- 【福建专版】部编语文小升初专题03 记叙文阅读-2022-2024真题分类汇编(学生版+教师版)
- 细胞中的糖类和脂质同步练习-2024-2025学年高一上学期生物人教版必修1
- 七年级上册地理第一章试卷及答案人教版
- 外研新版八年级下册Module 7 Summer in Los Angeles Unit 2同步练习
- 人教版七年级上册数学期末考试试卷及答案
- 苏教版六年级数学分数除法教案范例分析
- 留任干部计划书
- 企业流程管理制度(标准版)
- 校园欺凌隐患排查记录表台账范例
- 中小学教师职业道德规范及解读样本
- 模板工程 模板拆除方案及拆除方法
- 卫生管理运筹学课件
- 企业培训复盘总结
- 2024年合肥市高三第一次教学质量检测(一模)地理试卷(含答案)
- 新生儿心功能不全课件
- 广告策划实训教程 课件 项目四 广告策划实务之品牌调研
- 2024年政工师资格考试复习题库(浓缩500题)
评论
0/150
提交评论