Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by bkal

  1. bkal

    Stress values are more compared to experimental results and cracks are not formed on concrete for DOUBLE PUNCH TEST simulation in abaqus software

    A plot of principal stress (stresses) in a cross section (vertical, through the centre of the cylinder) would help.
  2. bkal

    Stress values are more compared to experimental results and cracks are not formed on concrete for DOUBLE PUNCH TEST simulation in abaqus software

    Can you clarify how did you model an interface between steel punches and a concrete cylinder; is it as a contact, with or without friction?
  3. bkal

    Stress values are more compared to experimental results and cracks are not formed on concrete for DOUBLE PUNCH TEST simulation in abaqus software

    I would double check your CDP parameters, and apply the load as prescribed displacements, rather than a prescribed force (you can monitor total axial reaction to get an applied force). Have a look at this web site, it can create an Abaqus input deck for the concrete model given key parameters...
  4. bkal

    Numerical singularity error

    I guess it depends on what are you interested in. If it is stresses in the blade, I would start with fixing rotation in the bushing. Have youlooked inte an example from Abaqus manual: Analysis of a rotating fan using substructures and cyclic symmetry
  5. bkal

    Numerical singularity error

    Apologies if I misunderstood you, but is your blade free to rotate about the bushing connector? Could that be a problem?
  6. bkal

    Car Garage Live Load for Slab on Grade

    In the UK, we would initially look into: https://www.concretebookshop.com/tr34-4th-edition---concrete-industrial-ground-floors-a-guide-to-design-and-construction---jan2018-4188-p.asp
  7. bkal

    Column Design - concrete - Biaxial bending - Why the r/f area is not deducted from concrete area

    Could it be that, becasue of a strain compatibility and a difference in elasitc mudulus between steel and concrete, the force in concrete is almost an order of magnitude smaller than the force in steel.
  8. bkal

    Composite modal damping

    I hope this forum can help me to understand physical background / interpretation of this option to model damping in Abaqus/Standard: I tried to search the manuals for explanation of how is this implemented and how (or even if) to use this in practical applications for modelling civil structures.
  9. bkal

    Wind interference effect due to adjacent buildings

    EN 1991-1-4 states the following: 4.3.4 Large and considerably higher neighbouring structures (1) If the structure is to be located close to another structure, that is at least twice as high as the average height of its neighbouring structures, then it could be exposed (dependent on the...
  10. bkal

    Mode Selection Based on the Mode Coefficients

    I am new to Ansys (I am reasonably experienced in Abaqus and general FEA) and I am still trying to find my around the manuals. I am interested in Mode Superposition Analysis. The manual (section 3.9.6.3 Mode Selection Based on the Mode Coefficients) talks about modes selection based on...
  11. bkal

    Baseplate bending line for thickness determination

    In the UK, we would mot likely adopt a T-stub approach, which is basically a yield line approach. An example of considered yield lines is below. It would probably need to be adjusted for your application:
  12. bkal

    Stresses from ABAQUS output

    I have responded to this in Finite Element Analysis (FEA) engineering.
  13. bkal

    why I am getting stresses higher than the ultimate strength of concrete in ABAQUS?

    It is difficult to say why as you have provided little information, but one of the reasons might be that the confined concrete strength (i.e. multiaxial compression) is higher than its uniaxial strength. Depending on your boundary conditions, load application etc., you might have triaxial...
  14. bkal

    Confinement, Stirrups stresses, transverse reinfocement

    The following paper might give you some guidance, but not a ready-made solution: Theoretical Stress-Strain Model for Confined Concrete, J. B. Mander, M. J. N. Priestley and R. Park, Journal of Structural Engineering, August, 1988, ASCE
  15. bkal

    Copying from MathCAD to Word

    It is a major pain. I tend to save Mathcad / Prime into a pdf file, split it into individual pages and ten import them into Word. This works okay for short documents, but is quite a hassle for long Mathcad worksheets.
See more

Part and Inventory Search

Back
Top