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  • Users: Drej
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  1. Drej

    PD5500 Stress Range

    Hi everyone Basic question. PD5500 is being used to carry out a high cycle fatigue analysis of a fillet weld. The weld is subject to a simple sine-wave type loading which puts the weld through simple tension-compression cycles. The stress in the weld is being calculated using simple hand...
  2. Drej

    Single-sided max fillet weld size

    I've spent many an hour trawling through articles and codes, searching through old posts on here, and just generally searching on Google without really bottoming this out. Assume there is a requirement to join a length of Square Hollow Section (say, 80x80x5) to a smaller SHS (say, 40x40x5) by...
  3. Drej

    Plastic strain allowable

    I'm looking into developing a methodology which permits the use of a small plastic strain allowable (2%) calculated using pseudo-static linear elastic methods. The structure is effectively a simply supported beam subject to rapid high 'g' impulse loading, and the allowable would be plastic...
  4. Drej

    Machined UB/UC Sections

    Has anyone ever come across the application or use of "machined" UB / UC sections for use within nuclear or any other safety-related sector? By "machined sections" I mean the material is bought in as a billet and machined in-house to produce the UBs / UCs. The machined sections need to be...
  5. Drej

    P-delta

    I have a relatively squat structure which is basically a series of connected boxes supported on box section legs. The legs are about 1m high and on these sit steel boxes of dims approx 2m by 1m by 1m. This is a nuclear glovebox structure and has to be qualified seismically to code. We're running...
  6. Drej

    Driven pile radial stress

    Hi all, Mechanical engineer here with a civil engineering question. I'm assessing a tube (CHS) which is being driven into a silty sand or sludge type material and need to determine the radial stress/pressure acting normal to the surface of the tube. I've determined the pile toe and surface...
  7. Drej

    BS5950 lateral torsional buckling - partial factor

    Is it normal practice to apply a partial factor to normal operating loads when carrying out a buckling check on a member? The code suggests yes but calculations I've seen omit the partial factor. Cheers. ------------ See faq569-1083 for details on how to make best use of Eng-Tips.com
  8. Drej

    Deleting redundant nodes in CAE

    I'm trying to find a solution in CAE - an easy method of how to remove redundant nodes in a large model without selecting individual nodes. The nodes are left over from a previous clean up operation where elements were removed, and they do not belong to any node set. Ideally I'd like to select...
  9. Drej

    Fluid Structure Interaction literature

    Can anyone please advise on a good book on FSI with applications. I've searched through the usual channels and most literature appears to be heavily biased towards pure theory with what seems little practical application of the method. Cheers. ------------ See faq569-1083 for details on how...
  10. Drej

    Material testing and specimen geometry

    A series of very low cycle and high strain fatigue-type tests are being carried out on a carbon steel material. The testing is not typically "fatigue" as such, since the specimen will be cycled approx 20 times under total strain limits of 10% (ie 10% strain range). The only material that is...
  11. Drej

    Specimen geometry for non-typical fatigue testing

    A series of very low cycle fatigue-type tests are being carried out on a carbon steel material. The testing is not typically "fatigue" as such, in that the specimen will be cycled over many cycles of small strain. Instead, the specimen will be cycled approx 20 times under total strain limits of...
  12. Drej

    AMSE III Level D - Stress Intensities from ANSYS

    I'm qualifying a structure to ASME III (NB) LEVEL D. The loading is seismic (DBE) and the loads on the structure are calculated using response spectrum analysis in ANSYS. There is a concern from the customer that the stress intensities calculated by ANSYS (and specifically required by the ASME...
  13. Drej

    Statically indeterminate problem?

    I'm analysing a hollow cylindrical (shell) structure using FEA. The cylinder is supported along its length at several (15) equally spaced points and a 1g 'vertical' load applied to obtain the 'vertical' reaction forces at the constraint points. These reaction forces are used to obtain the mass...
  14. Drej

    Harmonic analysis

    I am trying to undertake assessments of various code capabilities (Nastran, ANSYS, Abaqus, etc.) of Harmonic analysis. Having searched through the archives here I've managed to find nothing in Nastran regarding harmonic analysis. Does Nastran have this capability or is it referred to under...
  15. Drej

    Thermal Stress Analysis

    Guys, I'm undertaking a sequentially coupled steady state thermal stress analysis of a simple square plate, using DS4 elements in the thermal run and S4R elements in the thermal stress. This problem has a closed form solution. I have carried out the analysis using standard SI units (kg-m-s) and...
  16. Drej

    Sorting data

    Community, I have numerical data in Excel in the following column format: A B C D E F G H etc. where A, B etc = a number The data is 4 columns (A B C D) x 1251 rows. I would really like to have this data sorted into the format A B C D ... Any ideas? Many thanks...
  17. Drej

    Silver solder

    Dear group, Does anyone have any idea as to the mechanical properties (Young's modulus and Poisson's ratio) of the silver brazing alloy AG14 (other designations M25T BS 1545:1984) or anywhere close to this chemistry. I have looked high and low for these and cannot find them anywhere. Any approx...
  18. Drej

    Submodelling error

    Dear group, We are carrying out submodelling of components using ABAQUS 6.4.1 under windows 2000. Our global model has 120,000 elements and 90,000 DOF; the submodel has approximately the same number of DOF and elements. The global and submodel is comprised of C3D10M elements. We are receiving...
  19. Drej

    Overview of ASME

    Dear group, I must apologise for the naivety of this question, but I have been unable to obtain an acceptable answer from the sources I've tried so far (including this forum, the web and the code itself): is it possible, in a paragraph, for someone to describe what the ASME code actually...
  20. Drej

    Plotting data in Mathcad

    Dear group, Simple question: is it possible to draw a 2D bar chart (i.e. to graph one function) in Mathcad 2000? Cheers, -- drej --

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