i have a question for u. how to create model reinforce concrete with steel bar? i need to create model concrete in real live to simualate. Thank you so much
Hello, I have a few questions regarding thermal and harmonic analysis of a part in Ansys. My first question is, I will keep it at 23°C for 1 hour. Then I will reduce it by 3°C per minute and wait for it to reach -60°C. When it reaches -60°C, I have to keep it at this temperature for 2 hours. Then I will increase it by 3°C per minute and wait for it to reach 23°C. I will keep it at 23°C for 2 hours. My second question is that I will need to keep the relevant part in a 90% humidity environment at 30°C for 1 hour, and at 50°C in a 95% environment for 3 hours. My 3rd question is that I will subject the relevant part to 3g peak-to-peak simple harmonic analysis from 10 Hz to 60 Hz in every 3 axes for 10 minutes. How do I do this type of work in Ansys workbench ? Can you make an example application? Thank you for your answer, best regards...
What will be erosion criteria for concrete MAT_072R3 ? And how can we find depth of crack in concrete? The concrete slab is subjected to airblast load.
Hi @zafertoral5840, the diameter will be define in the *Section_Beam (CST=1), please watch our video >> ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-bHZttgLnXtk.htmlsi=l1nb9WDP4XkmjBg-&t=422 on how to define it. For more detail info, please refer to manual. Thank you.
Firstly, thank you for tutorial. ı have a question. when you did beam section you wrote TS1=25 and TS2=25 for both rebars. Are these values diameter for rebars? if these values are diameter, longitudinal and transverse rebars diameter have same thickness. This is wrong in civil engineering.Transverse rebars have mostly 10 mm diameter. in this tutorial, did you not care these values.about rebar thickness.
Hi Zafer, Firstly, thanks for your comment. We hope this video do provide some help on your activities. TS1 & TS2 are the outer diameters, you also can enter inner diameter in TT1 & TT2. For other settings, please refer to LS-DYNA Manual Volume I. The intension of this video is to guide users how to use S-ALE in LS-DYNA, so we don't actually care the value as long as the model is work, we are able to change it afterward when needed. All the parameter in section/material/EOS are freely to change, as long as the UNIT in LS-DYNA are CONSISTENT. Thank you & wish you a wonderful journey with LS-DYNA.
@@dfetech Hi. ı have a question again :D I did everything how you show like in this tutorial. But, in the RUN ANALYS stage, I having a Error. " Cannot find the executable:mpiexec" writing in the error box. How I overcome this problem. Thank you for supports
@@zafertoral5840 Hi Zafer, if you are using LS-DYNA MPP solvers. Please make sure your workstation has correct environment for mpiexec before submit your job. Please contact your local distributor for help. Thank you.
Hi. 1. Are there any different for straight rebars about cross section x or y direction. do I define third node direction y for straight rebars 2. you defined third node for rectangle rebars z direction. why did you define z direction? the reason for this, you transform z direction to rectangle rebars? do you explain to use third node for beam element, please. thank you tutorial.
Could you share .K file? No matter what I do, the results of the analysis are not good. (No load is applied to the reinforcing bar, and the concrete element is not removed.)
Sorry for late reply. You can create this model in LS-PrePost directly. See this video >> ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KZafmRx2iuQ.html on how to create it.
at 19:03 it appears a " 1000 auto created PART". I don't understand how you can add an auto-created part. Can you please explain? Thanks. Great tutorial anyway.
Sorry for the late reply. The part ID 10000 is the S-ALE part, it is created automatically after you define the DPID in *ALE_STRUCTURED_MESH and accept this keyword. You can change this DPID to any value, but please make sure all the PID refer to the S-ALE are the same, e.g. in *CONSTRAINED_LAGRANGE_IN_SOLID, otherwise your model wouldn't work.
Sorry for the late reply. Please do not follow the materials properties in this video, it is just a sample material. Please use your own concrete materials properties to get the accurate results. You also can use other material models in LS-DYNA like mat084, mat084/085, mat145, etc.
Hi there, Nice tutorial but, could you please shoot the full video comprising *material, *section, *LBE load definitions and analysis result interpretations please? Thank you.
@@AmeenTopa Hi Ameen, thanks for those nice videos on LS-DYNA. Could you please tell me what is the meaning of the third node in this video when meshing the beams, and can I use the curve function to mesh the beam, i.e., one element for one rebar? Are there any differences between one element for single rebar and 20 elements for single rebar?
@@leiyang8499 Third node is needed when you have a non symmetrical cross section. Meaning, if the beam elements has a rectangular shape, then you need the third node to indicate the orientation of the cross section. Of course, 1 beam vs 20 beam elements will make a difference in the results. More elements will give more accurate approximations to the solution.
@@navyamupparaju1529 Sorry for late reply. The blast load is define at *INITIAL_VOLUME_FRACTION_GEOMETRY and use *INITIAL_DETONATION to control the position & lighting time of the detonation point. LS-DYNA take the density of “Standard” TNT to be 1.57g/cm3 & detonation velocity to be 0.693cm/us. In this model, we use sphere with radius of 10cm as the TNT. To define the blast load you want, you need to use approximate the equivalent mass of TNT. For more info, please refer to LS-DYNA KEYWORD USER'S MANUAL Volume I.
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