I am modeling a concrete deck and have four different bridge slab sections, when I assign the same cross section (so same material) I get the Blue smooth graph. However, my research requires changing the material properties for each sections but for now I kept all the materials the same so all I did is assign different material name and section assignment. so the numbers of all the materials are exactly the all I did is assign a different section to each section and everything else is the same. and I am getting a change in stress between the different sections. I have attached the graphs that show what I am talking about.
Please let me know if there is a way to solve this problem and make the stresses look the same ?
Thank you
Rafael Salgado Thank you, I attached them
TravellingFormwork_RollerSIP_PinMiddle-SingleSpan.inp Gave the blue graph
TravellingFormwork_RollerSIP_PinMiddle-SingleSpan-DiffMat.inp gave the orange graph
ABAQUS is relatively simple, despite the fact that it offers a wide range of user-friendly features. The most complex issues can be easily modeled. For example, issues involving more than one component can be modeled by creating a geometric model for each component, then assigning the material's behavior to each component, and then assembling various components. In most modeling, even non-linear models, the user needs to determine only engineering data such as problem geometry, material behavior, boundary conditions, and loading of that problem. In a nonlinear analysis, ABAQUS automatically selects the rate of development and convergence tolerances and also adjusts their values for the correct answer during the analysis. The simple equations representing these finite elements are placed in a larger equation system and form the general form of the main problem. By changing the assigned sections, the simple and general equations for problem solving are also changed and different answers will be obtained.
Though, the question is not clearly explained and I do not make use of ABAQUS, I know that having two different section types but the same area and material properties can lead to different stress results. This is due to moment capacity difference for each of the section type.
For instance, a rectangular solid steel section and a I - Steel section, if given same area and same material properties, the stress results will be different as the I - Section usually have a higher bending capacity than the rectangular solid section.
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