For example ptc creo simulate, the program which you will use, provides constant strain and many higher order triangular elements. Technique to refine a 3d element mesh in select areas of high stress. To get the best mesh possible on a cad solid model, it is suggested to set the mesh size to the smallest diameter in your model divided by four. Mesh size hints simulation mechanical 2017 autodesk. You can use points, vertices, edges, surfaces, volumes, components, mesh region edges or mesh region faces as references for creating a mapped mesh region.
Ansys meshing inflation in mapped face meshing cfd. You can select the entities in any order and simulate will automatically ensure. The new user interface for showing results in ptc creo simulate includes the. Costly and laborious physical prototyping hinders a design team, resulting in compromised schedules and budgets. Mesh and principal component silhouette projection. This is for those who know part modeling commands in creo parametric. Each of the quads produced by mapped meshing is split into two triangles.
Flexibility to define element sizes, distribution and shapes mapped meshing, thin solids. Creo simulate is a structural, thermal and vibration analysis solution with a comprehensive set of finite elements analysis fea capabilities that allow you to analyze and validate the performance of your 3d virtual prototypes before you make the first part. Share simulateresults with others who do not own a ptc creo simulatelicense ptc creo simulate 3. The tutorial lessons cover the major concepts and frequently used commands required to progress from a novice to an intermediate user level. I would like to investigate how sample size affects my estimates and what happens to the estimates if a path is added or removed.
Projecting from a mesh import to use a mesh file to project sketch geometry, you will need to first convert the mesh to a brep solid. Meshing regions specify the shape of the meshing region using the brick, wedge, quad or tri radio button in the region shape area. You need to import the mesh, convert it to a surface, and then make it solid. Figure 1 shows the features of a model that was meshed using an appropriate size mesh. In those areas it will increase the plevel again and run another solution pass. Thus, product designers can enjoy the same industry leading power, performance and associativity of creo parametric for all.
The mapped mesh control option is available both in native and fem modes. In ptc creo parametric click home utilities simulate results. Enable mapped mesh control option on solid surfaces in. I cant be looking at the meshing problem in the right way. There are many, many pages that could be written about this. However, it sounds like you want to create a cad solid, i. I used brick elements on the oter tube and wedge elements on the inner cylinder. Also, i am selecting the correct body in geometry tab. Get an overview of creo simulate in this 55minute webinar by tristar ptc creo simulate allows you to understand product performance, and accommodate the digital design without needing a specialists feabackground.
On your model, select the curve you want to measure. This is the demo code for the following paper, benjamin irving, tania douglas, paul taylor. Click refine model and then click the arrow next to control in native mode. I have found some other threads regarding this issue with inflation in mapped faced meshing, but nobody found the correct answer. There are two ways to export a warped meshgeometry. Below is an example path model with parameters b1, b2, b3, b4, b5, e1, e2 and e3. By gaining early insight into product behavior, you can greatly improve product quality while saving time, effort and money. Mapped mesh and conflit with native creo geometry ptc. Analysis dialog shown below displays whether there were any errors in running the analysis.
Even with a million particles and a 1024x512x512 level set driving mesh construction, the produced fluid mesh still didnt fit the solid boundaries of the sim precisely. However, with creo simulate, designer engineers can better understand product performance, and accommodate the digital design accordingly all without needing a specialists feabackground. Each circle should be divided into at least 5 or 6 segments. The commands are presented in a clickbyclick manner using simple examples and. Our books are perfect for professionals or as a textbook for classroom use. For single pass, the solver actually runs two passes to achieve convergence.
Mapped meshing manually construct mapped meshing regions by selecting faces, edges or points bricks and wedges in volumes quads and tris on surfaces element compatibility is automatically maintained across mapped meshing regions improves performance and robustness of nonlinear analyses with the use of a structured mesh. I dont know how the memory would be a problem since i am running the simulation on. The figure on the right shows the mass of the part. No mesh object defined in the analysis freecad forum. In either pass, the mesh remains same, but, the order of the polynomials increases in the second pass at regions where the errors are higher. Learn creo simulate with these popular books and textbooks.
You can export the warped meshgeometry in cad format, stl format, or moldflow study file format, so that it can be opened in another application. Creo parametric, creo simulate has the same user interface, workflow and productivity tools that are prevalent throughout creo. How to use creo simulate lite in ptc creo and show design intent. At the end of the fundamentals i workshop, you will apply your knowledge to iteratively optimize a lever design for minimizing its mass. Btw, it is may be easier to create the geometry in freecad instead of wasting time to get rid of. I am not explaining how extrude works or similar things. Fnf file into creomechanica i found the problem with importing an fnf file for temperature or pressure loads into creo simulate.
Creo community for users of proengineer, windchill, and. Aug 15, 2016 click the icon that looks like a paper and pencil that allows you to edit the selected definition. Introduction to solid modeling plus a minimum of 80 hours of creo parametric experience. The mesh size should be smaller than the smallest radius of curvature or feature to be modeled. Automatic meshing create accurate meshes directly on 3d cad geometry. My original simulation imported the part geometry and created the air volume in cfd. As the optimization proceeds, this is slowly reduced until a minimum value is obtained approximately 20% less than the original. Page 4 of 5 ptc creo simulate data sheet meshing tools r surface regions historybased, associative, parametric features r volume regions historybased, associative, parametric features defined as extrudes, revolves, sweeps, helical sweeps, blends, rotational blends, swept blends or based on quilts r fully automatic mesh generation. In this tip you will learn the value of the mapped mesh control option and how to create a mapped mesh on a model with fillets to aid in improving the speed of analyzing your model. The settings you entered will create a fine mesh with lots of small triangular surfaces. If you would like to refer to this comment somewhere. In this video, i have demonstrated a very simple 3d model.
The easiest way to check the mesh size is to look at the edges of small circular holes in the feature file. Creo simulate page 3 of 8 simulation capabilities in creo. Ptcs simulation software is designed uniquely for the engineer. The higher order elements have midside nodes so the user can specify curved rather than straight sides this is possible by using isoparametric mappings. The mesher is restricted not to add any more points to the mapped meshed surfaces so that the resulting mesh remains on the boundary surface as dictated by the control. If the 2 central wedges are selected such that the. Creo simulate labels the selected points as hard point on the model. May 21, 2015 technique to refine a 3d element mesh in select areas of high stress. Freecad can convert meshes into solids, however ive had it fail for very complex meshes. Views 2504 views difficulty level introductory mark fischer, ptc. Ptc has announced that a database of realistic sample materials will be available in creo 4. Mapped mesh and conflit with native creo geometry indeed in some creo simulate courses or even before, in wf the instructor advised us that generate compatible mesh command could bring some problems during simulation so it was better no use it so why it is still there.
Amin, when i did inflation with any other type of meshing instead of mapped face meshing, i was able to. This locally adaptive plevel is something that is unique to creo simulate pelement technology. In the graph location frame, click the cursor button to define the curve that you want to use as a measure. The algorithm then checks locally in the model where the strain energy and displacements have changed the most. The commands are presented in a clickbyclick manner using simple. Creating a mapped mesh on fillets ptc learning connector. There is a new modern interface for displaying results in ptc creo simulate that you.
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