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gopal_rathore last won the day on August 28 2017

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About gopal_rathore

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    Structural and fluid simulations
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  1. Hi, How can we predict the accuracy of modal based transient solution like convergence is seen in direct transient analysis Thank you
  2. Hi, I am working on shock response transient analysis using modal superposition method. As this requires a pre-requisite of solving normal modes analysis . I wanted to know how many modes to be captured for transient run. Does this depend on effective mass ratio or on participation factor? Or are there any thumb rules or guidelines for the same My shock response analysis is for 30 ms Thank you
  3. Hi, I have got temperature mapped on the nodes of the mesh and are in the range of 550K -599 K.To consider this temperature values , I have ,made two stress-strain curves i.e one at 373 and second at 573 Order in TABLEST is 373 K and then 573 K Does the solver goes for linear interpolation between tow temperature values? let me know if there is any ambiguity in the table
  4. Hi, I am working on a NLSTAT thermal analysis where I have a temperature dependent material properties (at two temperature conditions) Used the foll. material cards: 1) MAT1 , MATS1 Used TABLSE S1 along with TABLE ST FOR Stress-Plastic strain curve and temperature value Facing the foll. error now *** ERROR # 3017 *** Negative hardening parameter H = -22964.325723 found. Negative value of H violates Drucker's stability postulate. This error prevents further computations and must be corrected.
  5. Hi, It is solved by exporting temperature into ASCII file and then loading the file in the temperature load case as .txt file With foll. order of information x-coordinate y -croodinate z-coordinate temperature
  6. Hi, Currently the model has been solved in fluent and I have got the nodal temperatures from there Can we use those in optistruct directly Working on comparison with Acusolve also
  7. Hi, I have solved a steady state CFD case of exhaust manifold in ANSYS Fluent. I have obtained the temperature distribution over the wall of the manifold and now would like to use the same for assessing the thermal stress in the manifold in optistruct For the same, I wanted to know how can we get the temperature load applied in optistruct from fluent Thank you
  8. Hi, I did the first option, but as this being a buckling mode check analysis where mass will play important role. If I make density as zero, mass becomes zero
  9. Hi, I wanted to know how can we apply an acceleration load for a linear static structural analysis. This is the prerequisite for a buckling analysis to be done I am using version 13
  10. Hi @Prakash Pagadala I have given force as load . Can you please confirm Thank you
  11. I made a similar file to check for scale factor functioning. It is not working in the attached file for me and not able to find where I am doing the mistake Thank you spring.hm
  12. Hi, There is one tool in 17 version in Hyperview> Preferences>NVH utilities to understand the identification of global and local modes. It talks about setting a criteria based on percentage range for identification. I wanted to know how it is setting up this criteria I have attached image for reference
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