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Andrea
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Comments
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Is true using *BEAM GENERAL SECTION
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I think that isn't possible. I never use this kind of elements B31 - B32 but from CCX manual the nodes that define the beam are expanded into 8 nodes elements. So you can obtain rectangular section and elliptical section. This automatic nodes genera…
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I attach LIML file with mesh of the model: first with partitioned faces and the second without partitions. Excuse me but I think that I created confusion because the first time that I created the FEA model I didn't see the separated mesh. In fact …
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The problems were related to the geometry. In fact importing step file without partioning the faces (shared edge at the intersetion) the automesh doesn't creates shared nodes. Problem related to contact is solution time and it has no sense for a we…
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It runs. There is always something to discover. I thought that was not possible because of the absence of "select edge". Thanks, I will save time
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It's a global rule. Obviously if the nodes aren't equi spaced doesn't run because is necessary assure rotation equilibrium. In general case the edge must be seeded to obtain equi spaced nodes. Same consideration must be performed when a surface load…
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Pipe with Rigid Body to apply constrants and torsion. Follow a radial displacements (CGX post processor)
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Don't worry...its only post-processing's issue. Radial displacements are null. I try to explain. In the real case nodes must move over the circumference. Postprocessor moves the nodes along the tangent. So graphically they appears on circunference o…
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Yes...good Idea Sergio. The problem is CCX under Windows because I send the inp file for solving under Linux and the model is correct. There is difference between displacements and stress relative to the other model (with DCOUP3D). Soo I will insta…
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Hi Sergio! I tried to apply RB to the model but CCX goes in crash. I attach liml file to check. I you have time check the RB applied on CCX cuxtom model definition. I tried to apply to ELSET, to considering ROT NODE but dosen't run. Maybe the pr…
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About Reduced integration elements I also have to find more information. Interesting is the post of Kwip about "superconvergent" behavior. About Calculixforwin I downloaded it because has UNICAL converter inside but the wizard doesn't run under Win…
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You can add to element library C3D8R, C3D20R and the others reduced integration elements relative to plain stress, plain strain, axisymmetric...For the solver is only to read a letter R after the name of the elements. User could be free to choose w…
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The firsts are for pratical applications. Timoshenko's books are theoretical books but with solved examples. I don't know if you're an enigineer but are suitable for engineers because is necessary have a background of various matters: mechanic of ma…
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Wrong screencapture...the right one
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You can calclulate your own theoretical solution using two books: Peterson's stress concentration factors Roark's formulas for stress and strain or Timoshenko's Books.
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Here a good explanation of the basic problems related to reduced integration elements http://optimec.ca/news/how-to-model-bending-and-bending-dominated-problems-in-abaqus/
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Youcan try to solve using symmetry because the problems shows simmetic loads and geometry. Studyng a quarter of plate the results are (more elements C3D20): DX = 2 x 0.002683 = 0.005366 DY = 2x 0.01171 =0.02342 PS
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I sometimes use reduced integration elements in plastic analysis to reduce computation time. Reduced integration uses a lesser number of Gaussian coordinates when solving the integral. This involves 8/20 nodes brick elements and 4/8 node shell eleme…
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OK! So next release is coming soon? Have you other news about it?
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I have done my first simple structured mesh in Salome. (All Hexa) Applied traction p = 100 MPa Theoretical results 373 MPa (eFatigue stress concentration finder based on Peterson's stress concentration factors: W = 25 mm; D = 10 mm) Same studies wit…
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Excuse...another pictures for explain better
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On geometry module "Explode" -> select the solid and choose "Face". So you will have all the faces of the solid. Mesh module Create mesh and compute it - Convert to Quadratic if needed Select your mesh (Mesh 1 as default name) on browser on lef…
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I'm italian and I understand (quite) spanish. Good Job! I know that the initial mistrust of opensource or cheap FEA softwares involves above all new users or who has a reduced knoledge of FEA. Other aspect is that the on many Universities (at least …
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Ok Sergio! You wrote that: "still I didn't find a way to create groups of faces in Salome" I created them and found them in Mecway. See attached pictures. If you want I can send the procedure that starts from geometry module and involves some steps…
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Hi! Make attention because the first point under *PLASTIC card is the yield point and so the strain must be the true plastic strain. About material info on plastic field you can find several models. I use the models on attached pictures for European…
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OK! The first way proposed by Victor is quick and it runs! To Sergio: I tried creating groups of all types: node, surfaces, volume, elements but It's always the same. Maybe it depends from the converter. I made it by UNICAL converter included on Ca…
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To check mesh quality you can download GMSH (freeware). On Mecway save as "GMSH ASCII" Open GMSH and locate your mesh file. In GMSH go to "Tools" -> "Statistics" and you will find "SICN" "Gamma" "RHO". From GMSH documentation What is the signif…
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