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davefo
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download of mkl failed yesterday, got it now
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I've not used ccx. Is it similar
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thanks it was supposed to be two part of 150mm
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for first 3 DOF select displacement constraint select either direction X Y or Z and leave deflection distance as 0 mm similarly for node rotational DOF select either direction X Y or Z and leave rotation angle as 0 degree
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i thought i might need to model the soil but don't know what properties to give it
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when i swap the bonded contact between the plate and cylinder i get inconsistent support error. I presume this is due to two bond surfaces at 90 degrees sharing the nodes?
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Thanks I didn't spot the miss formed hex shapes what i did spot though that there where X displacement where you've indicated refinement. So I've assumed elastic stiffness is insufficient. So increased it and the black areas there disappear. I got t…
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actually some deflections appear wrong, see attached
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see attached strange concentrations also
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I must have modelled the stiffeners wrong they are supposed to be solids as well.
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victor what direction does an elastic support apply? Is it only normal to the face?
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I think the problem is the version of ccx. I have version ccx28p2.exe , i tried ccx213.exe and it now works
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victor I tried your suggestion and i now get the following errors. *INFO reading *STEP: nonlinear geometric effects are turned on *ERROR reading *DLOAD: element set INTERNAL …
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excellent thanks
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Sergio ? main step file used is only the profile shape of the cone and angles that i have then meshed and revolved. two other step files are the stiffeners which have been surface meshed then extruded 5mm. Victor tried elastic instead of tied cha…
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never used ccx so dont know what i'm doing with it, tried it but get the following warnings and no results *INFO reading *STEP: nonlinear geometric effects are turned on *WARNING reading *STATIC: a nonlinear analysis is requested …
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Victor I tried Non linear static and get some errors, I.e. bonded contact and member orientation What do i need to change these to to get it to analyse?
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thanks, I'm trying to figure out how that equation works.
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looks great. how did you manage to get such a good mesh generated?
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could this be done using compression only + week spring constraints to create a moment couple ?
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yes i found after posting that it would generate division by zero dut i am struggling to would out an alternative way of creating a directional radian displacement. ie. such that expansion of vessel is positive but contraction is negative. Ideally i…
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I've tried elastic restraints instead buy am still getting the same error. I've used 40Gpa/m for elastic
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I'm also looking at getting a reference book on fea. since i would likely only use fea for structural type problems. Do you have any recommendations on what to buy
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Thanks to all of you for he encouragement and advise, I am a qualified Chartered Structural Engineer here in England, so am used to design of structures, but have zero experience of Finite element analysis. The client is a local fabrication company …
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I refined the mesh a couple of times and the stresses appeared to converge but also increase. I found the max point and refines x2 a few times and now the stress values just keep increasing again but are still not converging.I give up this is imposs…
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Thanks yes i thought the critical stress level appeared to be at the joint between the cone and the mid angle support, I struggling to fine a way to refine the mesh in that region and expand the mesh away from it where it doesn't need to be as small…
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for clarification, what i am trying to find out for the client is at what internal pressure the model experiences permanent deformation. The mid level ring angle is not only intended to be a stiffener it is there as the main vertical support the to…
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A bit over my head, I don't know much about fea. Do you mean I should redo the whole model as solids?
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i'm getting really confused now. i've got the iges to mesh and repaired the cracks. Then i've run the analysis with the same load and constraints but get different von mises stress. Then when i find the max stress point and refine it the value just …
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How do you do the averaging?
