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  • Users: R.Eng
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  1. R.Eng

    Phase transformation in 3d printing

    I want to simulate phase transformation in wire and arc layer additive manufacturing on a substrate test plate in ABAQUS. Which subroutines do I need? I know USDFLD is a must. What about HETVAL and how can I use them simultanously? Can you suggest any papers to use Phase transformation model?
  2. R.Eng

    microstructure analysis in ABAQUS

    Hi, I'm going to simulate additive manufacturing process in abaqus on test plate. My goal is obtianing mechanical and microstructural outputs.Is it possible to get microstructure or phase transition output with subroutine? What is the best choice? I hope you can give me your advice.
  3. R.Eng

    Dflux Subroutin for Welding

    Dear Experts, I want to simulate a simple WAAM process in which Heat Source moves along a straight line (end of step 9) and then goes back. Model of heat is Double ellipsoidal Goldak and the subroutine is attached. After running the job, it is completed but at the end of forward movement it...
  4. R.Eng

    Hydro test acceptance acc. to API 6A

    Hi, What is the acceptance criteria for hydrostatic testing of gate valves according to API 6A? We see some points like dew on the surface of gate.Is it acceptable? Can we consider it as leakage? The surface of gate and seat is WC coated.
  5. R.Eng

    Shell element thickness

    I'm working on forming of sheet metal.The element type is S4R. I want to know whether I should consider the thickness of shell for the Gap between rollers or not? The shell section offset is Bottom type. Thickness is 12 mm.
  6. R.Eng

    Characteristic element length

    How can I calculate Characteristic element length and Fracture energy for Damage evolution in ductile damage module in ABAQUS? Suppose that: 1-The model has S4R shell element 2- The finest element shape is like the picture 3- Type of mesh is Orphan mesh 4- Total Fracture area below the...
  7. R.Eng

    Resolve Element & General Contact Warning

    Hi, How can I resolve following warnings? Abaqus IS UNABLE TO ESTIMATE AN AVERAGE INTERFACE ELEMENT LENGTH. THE WHOLE MODEL CHARACTERISTIC ELEMENT LENGTH IS USED INSTEAD. & OP=NEW on *CONTACT is ignored when the general contact definition is specified as model data
  8. R.Eng

    Selection of Shell element or Sold in spinning Process

    Hi, I'm working on sheet metal spinning process with following characterization: Thickness: 12 mm OD of Preformed Sheet: 1100 mm Material : AISI 304L Solver: Dynamic Explicit Which Element do you recommend for this situation? I worked on S4R and I'm not sure about my selection. Thanks
  9. R.Eng

    How can I apply boundary condition

    How can I apply boundary condition to center of this plate? I fixed the center RP and make the center of plate as rigid body. but as you see the Mises stress around the center is very high!
  10. R.Eng

    Reduced Thickness in General contact

    Hi, How can I solve this warning during forming of shell element? Solver: Dynamic Explicit Interaction: General Contact-Tangential behavior Element: Shell Thk:12
  11. R.Eng

    Contact Warning

    Hi, How can I solve this warning in ABAQUS? For a self contact surface, the facets of the elements in element set WarnElemFacetThickPt63d-Step1 are thicker than 0.6 times an edge or diagonal length of the facets. Use the MAXRATIO parameter on *SURFACE to allow automatic rescaling of the contact...
  12. R.Eng

    Step Cooling Test of heavy thickness Cr/Mo Steels

    Hi, Consider the fabrication code as ASME SEC. VIII Div. 1 & 2 and API RP 934 and Material as SA387 Gr.11 & 22 Is there any references to consider the step cooling test necessary, for the acceptance of thick plates(such as 60 mm and higher) regardless of J-Factor or X-Bar? According to the...
  13. R.Eng

    Step Cooling test of high Thickness material

    Hi, Consider the fabrication code as ASME SEC. VIII Div. 1 & 2 and API RP 934 and Material as SA387 Gr.11 & 22 Is there any references to consider the step cooling test necessary, for the acceptance of thick plates(such as 60 mm and higher) regardless of J-Factor or X-Bar? According to the...
  14. R.Eng

    measuring hardness for NACE services

    Dear Experts, Are we allowed to measure hardness of surface after finished machining of forged parts? (The hardness is mentioned 23 HRC in Table A.18 in NACE Mr0175 Part3) The part is Cross & Tee Service has NACE Restrictions Material is SS424 Manufacturing Code is API 6A
  15. R.Eng

    Welding on SS formed head

    Dear experts, Are we allowed to do welding on the knuckle region of formed head due to the cracks generated after forming? The material is SS316L
  16. R.Eng

    Tension Test Acceptance Criteria for Production Test Coupon

    Could anyone please explain the acceptance criteria for tension test of PTC? (interpretation of Fracture on Weld and base metal) Design Code : ASME SEC. VIII Div. 2 Product: Column Material : SA537 CL2

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