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  1. faremusai

    Shift of plastic neutral axis due to minor-axis bending & eccentric axial compression on channel

    ukbridge, Thank you for the suggestion. In SCI P363, only the value of plastic section moduli are tabulated. The related formulae are not provided. In SCI P202 Section 3.2.6(c), only the formula for major axis bending are provided. Formula for minor axis bending are too complex and not...
  2. faremusai

    Shift of plastic neutral axis due to minor-axis bending & eccentric axial compression on channel

    I have found a section properties table for parallel flange channels (PFC) in SteelConstruction.info (https://www.steelforlifebluebook.co.uk/pfc/bs5950/section-properties-reduced-plastic-modulus/) which provided values for calculating the reduced plastic modulus under axial load and moment...
  3. faremusai

    Shift of plastic neutral axis due to minor-axis bending & eccentric axial compression on channel

    For the shift of plastic neutral axis in step (2), I used the method mentioned in the following document (http://www.colincaprani.com/files/notes/SAIII/Plastic%20Analysis%201011.pdf page 20 & 21) in which the value of "beta" is the shift due to axial compression force only. Design resistance...
  4. faremusai

    Shift of plastic neutral axis due to minor-axis bending & eccentric axial compression on channel

    I want to calculate the plastic section modulus and location of plastic neutral axis of a parallel flange channel subject to bending about the minor axis and eccentric axial compression load acting along the channel back surface for Eurocode 3 design check purpose. I think this problem can be...
  5. faremusai

    Design of Elevator dividing beam

    Which design standard are you working on? EN 81-20 / ASME A17.1 etc.? For EN 81-20 compliance and according to Clause 5.7.4.6, the maximum deflection of T-guide rail is 5 mm (with safety gear operating) or 10 mm (without safety gear). Stress also has to be considered for variable operation...
  6. faremusai

    Changing properties standard shape reference point location by API function .pval(51) in v10.3.1

    Thanks for the explanation.
  7. faremusai

    Changing properties standard shape reference point location by API function .pval(51) in v10.3.1

    The default location of reference point for a standard shape in FEMAP is "1". I want to change it to other location by using the API function .pval(51) e.g. to point 7. I have tried using the command pr.pval(51) = 7 then, .ComputeStdShape, then pr.Put(ID) to update the properties. There is no...
  8. faremusai

    Reverse the direction of a line beam element

    Thanks. It works as expected. I always think that .Node() is only used to read the node and cannot be written to.
  9. faremusai

    Reverse the direction of a line beam element

    I want to change the direction (NOT the orientation of standard shape cross section y-axis) of a line beam element by interchanging the end node A & B via API. The ID of end node A and B are known. How to change the element's end node ID and put the element back to the model and update it?
  10. faremusai

    Create model in Excel for automation

    Excel provides the functions of Lookup table / Index search / Data validation which makes parameters input by selection from a list of choices much easier. Also, if it is requried to retrieve the result output from FEMAP and carry out further calculation process, running a macro from EXCEL is a...
  11. faremusai

    How to display beam element standard shape cross section centroid location

    In my case, the line element (beam) with standard shape (angle) was used. Can we draw any point in the proterties editor?
  12. faremusai

    How to display beam element standard shape cross section centroid location

    I am using v9.3 and want to extract the location of cross section centroid a beam element having a standard shape (angle or channel) through API programming. It seems that there is no data showing relevant information. Only the values for I1, I2, I12, Y shear area, Z shear area, torsional...
  13. faremusai

    [Help] Read beam elements in group(s) and write information & output vector to EXCEL

    I want to write an API (for FEMAP v9.3) to read information of group(s) of beam element and some output vectors from FEMAP and write to EXCEL. The following shows what the API should perform: - Define the group no. of beam element group(s) to be read (group numbers are known, usually more...
  14. faremusai

    Calculation for multi-span continuous straight beam on supports with rotational restraint

    Doug, Thanks. All support reaction/result can be displayed now. Your advice and spreadsheet and advice by jdgengineer is really helpful. In the meantime, I will complete the Three-Moment-Equation vesrion first (the support rotational stiffness problem is the last obstacle in my program). My...
  15. faremusai

    Calculation for multi-span continuous straight beam on supports with rotational restraint

    I have downloaded the ConBeamU.xlsb from the URL you provided and test run it. But the layout in workbook "ConbeamU1" is a bit different from that shown in your screen capture. Also, I have defined five supports but the result in "ConBeam Reactions" have result for 4 supports only (for x=0 1.5...
  16. faremusai

    Calculation for multi-span continuous straight beam on supports with rotational restraint

    Attached is a sketch showing a sample layout of the beam and load. The loads and support configuration are arbitary for programme testing/debugging purposes. http://files.engineering.com/getfile.aspx?folder=5fed7f14-cf0d-423f-adab-df210d064013&file=Beam_test.gif
  17. faremusai

    Calculation for multi-span continuous straight beam on supports with rotational restraint

    Doug, Thank you for the advice and spreadsheet. Your method sounds like the Unit Load Method. I should have described the support conditions more clearly. It is a kind of support which can move vertically (with vertical stiffness like an elastic isolation pad, or end movement of free end of...
  18. faremusai

    Calculation for multi-span continuous straight beam on supports with rotational restraint

    All supports are pin (i.e. rotatable, but not totally fixed nor totally free, with resisting moment depending on the angular displacement of the support like a coil spring). The rotational stiffness (unit in Nm/rad) of all supports are known. When there is no load, all supports does not have...
  19. faremusai

    Calculation for multi-span continuous straight beam on supports with rotational restraint

    I want to calculate the reaction force (vertical) and reaction moment on supports for a continuous straight beam with several unequal spans resting on supports with rotational restraint (i.e. reaction moment occur when the support rotates). If rotational restraint of supports are not present...
  20. faremusai

    Imposing initial angular displacement load in Clapeyron's Three Moment Equation

    The general form of Three Moment Equation can be found in many textbook on mechanics. The right hand side of the equation is usually given in the following form: -6 x_bar[left] A[left]/(L[left] E[left] I[left]) - 6 x_bar[right] A[right]/(L[right] E[right] I[right]) + 6 delta[left]/L[left] + 6...

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