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  • Users: jfymsam86
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  1. jfymsam86

    Deep sections

    Hi What's the range of intermediate sections? I found in FEMA that the sections smaller than W21 are shallow, but what's the start point of Deep sections? Is W24 Deep section or intermediate? Thanks
  2. jfymsam86

    Elongation in mechhanical property

    Hi I have a simple question about Elongation in mechanical property. Is that meam Ultimate Strain for example for A36 is 0.21? I’m going to use 3-line Stress – strain diagram. But according to table (attached), by E= 205000 and Yield stress = 250, so yield strain is 0.001219. But 120 ε is...
  3. jfymsam86

    Thermal Bolt Pretension

    Hi According thread799-338002 Bolts are A490 and 1.25 in. So A=7.91 cm^2 Pt-bolt= 138.7 kips= 62900 kg E=2.05 e6 kg/cm^2 I’m going to define 70% Pt = 44000 kg I defined orthotropic expansin as: 0, 0, 2.1e-6 So AEalpha=34.08 and then T= -1290 degrees So in predefined load I assigned -1290 for...
  4. jfymsam86

    [b]Stress output more than defined ultimate stress in input?[/b]

    Hello all I’ve modeled the beam to column connection with this material: E=2e6 kg/cm^2 , 0.3 3 line stress-strain diagram (hardening): 3690 0 3700 0.019756 4880 0.21552 But at result, I have von-mises stress about 6400 kg/cm^2 at some nodes! Loading is cyclic displacement. I didn’t define...
  5. jfymsam86

    using symmetry in CORRUGATED Plate

    Hi My model has a beam with corrugated Web (using two L-Shape instead of Plain web) (attached picture). Because of big dimension, I’m going to use Symmetry. But is it possible when Web is not plain along the symmetry axis?? thanks
  6. jfymsam86

    Simple Question about symmetry

    Hello I'm going to use symmetry in my model (because of many interaction). My model is a I-shape beam connected to a Box column. But i don't know that how to use it, i mean should i define the symmetry only along the symmetry axis or for all surface that i can see in the YZ view?(I want to use...
  7. jfymsam86

    Equivalent force in a cross-section

    Hi I applied a cyclic displacement to tip of beam. Now I’m going to find the equivalent Force at this section. By RF, I can find each node force. But for total Force, if I calculate the summation Force of all nodes, regarding to cyclic loading (displacement) and compress and tension in the cross...
  8. jfymsam86

    Hourglass control (Difference beetween C3D8 & C3D8R)

    Hi We know that using c3d8 especially for interaction, will cause to convergence better, but why? when we should use c3d8r? is there a big dufference betwwen them for result or no? I mean what does the hourglass control do? thanks inn advance
  9. jfymsam86

    overclose in interaction

    Hi why when we use "Hard contact" for contact property, again we have overclose in nodes? thanks
  10. jfymsam86

    Symmetry in Abaqus

    Hello all engineers In the beam to mid span of column connection (I shape), (T connection: column Vertical (Y axis), Beam Horizontal (Z axis)), that is under cyclic loading, can we use 2 symmetry condition for axis of beam and column? For XSYM it’s clear (vertical cut), but for YSYM (Horizontal...
  11. jfymsam86

    interaction in bolt connection

    Hello everyone My model has a beam=430 cm welded to extended endplate and with 8 bolt, bolted to a column=550 cm. The setting for interaction is: Tangential, penalty, friction coeff.=0.2, hard contact. And others are in attached file. But each analyze interrupted after about 6 hours (about...
  12. jfymsam86

    Thermal bolt pretension

    Hello everyone I modeled a bolt connection (a Beam welded to an Endplate and connected to the Column flange with 4 bolts (A490, 1.25”)) under cyclic loading (general-static) in ABAQUS 6.11. I defined interaction setting. (Units: cm, kg). After analysis, bolts got narrow, because I didn’t...

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