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kanney

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kanney last won the day on October 30 2015

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    kanney18

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  1. assuming that you might know why we do mesh at mid-surface rather mesh it on the outer or inner surface, i directly come to ur question about thickness. 1. Our meshing should always represent the geometry because the stiffness matrix varies with respective to the geometry, shape and size(in x,y,z ) on which the stress and defections values are based. 2. irrespective of element type Software requires all 3 dimensions to run an analysis so, For 1D elements, it contains the information of only 1 dimension(say x) but later while defining the cross-sectional parameters we provide the information of other 2 dimensions (y and z). similarly For 2D elements, it contains info of 2 dimensions say x and y, now while assigning thickness we r providing z dimension info. so if u skip defining value even in 1 dimension syntax will fail to execute the analysis request. there are some rules to be followed before judging the right element type... but it is irrelevant to the question you u posted so, i'm not discussing it here.. hope it was clear ! .
  2. 1st of all switch from Hypermesh to Engineering solutions in the user profile.. then select CFD --> click ok now go to File-->export FEA--> select file type as CFD; solver type Fluent; target location; click export... itzz done !! before exporting u should actually define all zones (inlet.outlet,interfaces,fluid domains, etc) good luck...
  3. in the view tab i have enabled all tool bars but collectors toolbar is not showing up... how to get it back ?? thank you...
  4. thank you for the quick response .... @ ravi and cesar
  5. i have imported a geometer which is in millimeters, after meshing i gave steel material properties as E=2.1e5, N=0.3, density= 7.9e-9 and the total mass shown was 2.307e-2... my question is, in what units is the mass obtained ?? i'm little bit confused every time doing this unit conversions thank you..
  6. i have tried just a simple normal mode analysis for which i got an error.... hwsolver.mesg output from the solver: ============================== *** ERROR # 2502 *** Element 443633 had incorrect node numbering sequence and needs renumbering. ***** ERROR ENCOUNTERED BEFORE COMPLETING THE CHECK RUN ***** Solver FAILED optistruct:: Solver run finished after 14 seconds. somebody help me out with this... thnkzz
  7. hi ... i have got this error... i have tried Analysis->renumber-> all ; but the error comes again.... have a look on it.. A fatal error has been detected during input processing: *** ERROR # 2502 *** Element 443633 had incorrect node numbering sequence and needs renumbering. ***** ERROR ENCOUNTERED BEFORE COMPLETING THE CHECK RUN ***** ************************************************************************ Errors reported during program execution Error output from the solver: ============================== Activating OPT SKIP mode. Activating OPT SKIP mode. hwsolver.mesg output from the solver: ============================== *** ERROR # 2502 *** Element 443633 had incorrect node numbering sequence and needs renumbering. ***** ERROR ENCOUNTERED BEFORE COMPLETING THE CHECK RUN ***** Solver FAILED optistruct:: Solver run finished after 14 seconds.
  8. the purpose is only for proper visibility... for an example... nodes usually will be on the edge of the surface.. for toggling a particular edge among bunch of edges it is apt to shrink elements so that u can spot the edge and see the corresponding remeshing hasppening upon toggling or splitting (whn remesh is set in Options)
  9. @ keerthan can you please elaborate it by giving few examples for different types of connections used for different analysis... added to that assume a valve assembly with 20 parts (bolts, washers, spring, ball, bonnet, flange etc..) are meshed with hex8 mesh for fatigue and thermal ... now how to establish connectivity between thm ? a valve has too many mating surfaces where we cannot use RBE2, and giving spot welds or adhesives are not justifying the real scenario so how do we give the contact between them ?? thanks in advance...
  10. while importing ur IGES, open import options and make sure that it is Automatic in Cleanup tolerance (as shown in pic)... and also don't pick you surfaces by clicking "displayed" or "all" just select your surfaces by clicking on it individually.
  11. for these kind of parts the BesT way is to use Morphing ! try it and u'll get surprised yourself !!
  12. @ Q.NGUYEN-DAI : thank you for the reply sir....
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