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. Creo community for users of proengineer, windchill, and. To get a valid fem mesh object you need to have a solid object without errors. 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.
If you would like to refer to this comment somewhere. Fnf file into creomechanica i found the problem with importing an fnf file for temperature or pressure loads into creo simulate. Introduction to solid modeling plus a minimum of 80 hours of creo parametric experience. In the graph location frame, click the cursor button to define the curve that you want to use as a measure. Mapped mesh and conflit with native creo geometry ptc. The new user interface for showing results in ptc creo simulate includes the. Enable mapped mesh control option on solid surfaces in. You need to import the mesh, convert it to a surface, and then make it solid. Creating a mapped mesh on fillets ptc learning connector. Ptc creo simulate gives designers and engineers the power to evaluate structural and thermal product performance on your digital model before resorting to costly, timeconsuming physical prototyping. If the 2 central wedges are selected such that the. Creo simulate labels the selected points as hard point on the model.
Btw, it is may be easier to create the geometry in freecad instead of wasting time to get rid of. As the optimization proceeds, this is slowly reduced until a minimum value is obtained approximately 20% less than the original. The algorithm then checks locally in the model where the strain energy and displacements have changed the most. Flexibility to define element sizes, distribution and shapes mapped meshing, thin solids. Also, i am selecting the correct body in geometry tab. 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. Click refine model and then click the arrow next to control in native mode. Share simulateresults with others who do not own a ptc creo simulatelicense ptc creo simulate 3. With creo simulate, design engineers can better understand product performance and then optimize the digital design early in the design cycle, without needing expertise in simulation. On your model, select the curve you want to measure. Meshlab cannot help with that, as it only deals with meshes. Amin, when i did inflation with any other type of meshing instead of mapped face meshing, i was able to.
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. 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. Ptcs simulation software is designed uniquely for the engineer. The mapped mesh control option is available both in native and fem modes. For example ptc creo simulate, the program which you will use, provides constant strain and many higher order triangular elements. I would like to investigate how sample size affects my estimates and what happens to the estimates if a path is added or removed. Each of the quads produced by mapped meshing is split into two triangles. The mesh size should be smaller than the smallest radius of curvature or feature to be modeled. You can use points, vertices, edges, surfaces, volumes, components, mesh region edges or mesh region faces as references for creating a mapped mesh region. I used brick elements on the oter tube and wedge elements on the inner cylinder. Benefits and description watch a video on ptc university learning exchange, demonstrating the enhancement described below. This is for those who know part modeling commands in creo parametric.
Ptc has announced that a database of realistic sample materials will be available in creo 4. Analysis dialog shown below displays whether there were any errors in running the analysis. The settings you entered will create a fine mesh with lots of small triangular surfaces. 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. Ansys meshing inflation in mapped face meshing cfd. There are two ways to export a warped meshgeometry. Each circle should be divided into at least 5 or 6 segments. No mesh object defined in the analysis freecad forum. Creo parametric, creo simulate has the same user interface, workflow and productivity tools that are prevalent throughout creo. By gaining early insight into product behavior, you can greatly improve product quality while saving time, effort and money. Creo simulate page 3 of 8 simulation capabilities in creo. Below is an example path model with parameters b1, b2, b3, b4, b5, e1, e2 and e3.
In those areas it will increase the plevel again and run another solution pass. Mapped meshes and spheres i think i can repeat the issue. 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. 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. Our books are perfect for professionals or as a textbook for classroom use. 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. In this video, i have demonstrated a very simple 3d model. The higher order elements have midside nodes so the user can specify curved rather than straight sides this is possible by using isoparametric mappings. Meshing regions specify the shape of the meshing region using the brick, wedge, quad or tri radio button in the region shape area. Available as a standalone or an extension to creo parametric, creo simulate has the same user interface.
There are many, many pages that could be written about this. For single pass, the solver actually runs two passes to achieve convergence. Views 2504 views difficulty level introductory mark fischer, ptc. Element compatibility is automatically maintained across mapped meshing regions. Automatic meshing create accurate meshes directly on 3d cad geometry. The commands are presented in a clickbyclick manner using simple. How to use creo simulate lite in ptc creo and show design intent.
Simulate the forces transferred between components when they come into contact automatic contact interface detection include the effect of friction in contact interfaces simulate shrinkfit or snapfit situations page 6 of 8 simulation capabilities in creo. My original simulation imported the part geometry and created the air volume in cfd. 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. However, it sounds like you want to create a cad solid, i. At the end of the fundamentals i workshop, you will apply your knowledge to iteratively optimize a lever design for minimizing its mass. The tutorial lessons cover the major concepts and frequently used commands required to progress from a novice to an intermediate user level. 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. The easiest way to check the mesh size is to look at the edges of small circular holes in the feature file. This is the demo code for the following paper, benjamin irving, tania douglas, paul taylor. Learn creo simulate with these popular books and textbooks. In ptc creo parametric click home utilities simulate results. Mesh size hints simulation mechanical 2017 autodesk. Thus, product designers can enjoy the same industry leading power, performance and associativity of creo parametric for all. However, with creo simulate, designer engineers can better understand product performance, and accommodate the digital design accordingly all without needing a specialists feabackground.
May 21, 2015 technique to refine a 3d element mesh in select areas of high stress. Costly and laborious physical prototyping hinders a design team, resulting in compromised schedules and budgets. The figure on the right shows the mass of the part. I am not explaining how extrude works or similar things.
Figure 1 shows the features of a model that was meshed using an appropriate size mesh. I was wondering if anyone can tell me how to create a mapped mesh on the geometry highlighted in yellow. Freecad can convert meshes into solids, however ive had it fail for very complex meshes. There is a new modern interface for displaying results in ptc creo simulate that you. Technique to refine a 3d element mesh in select areas of high stress. I cant be looking at the meshing problem in the right way. The commands are presented in a clickbyclick manner using simple examples and. Mesh and principal component silhouette projection.
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