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  1. simulation_engineer_2022

    Modeling viscous behavior of material

    Hi everyone! I wonder how one could implement specific relaxation material model to simulate stress change over time in Abaqus. The model itself looks like follows: stress(t)=C1 * strain * timeC2 * exp(-C3/T) C1, C2, C3 are known constants. I guess writing CREEP subroutine could help, but...
  2. simulation_engineer_2022

    Fluid viscous damping coefficients

    Hi everyone! Could you please help me understand the proper way of calculating viscous damping coefficients for a set of frequencies? The core of the design consists of a cylinder filled with a viscous fluid, one side of which is subjected to excitation at a given frequency. For now I have no...
  3. simulation_engineer_2022

    Get nodal deformed coordinates using Python

    Hi everyone! I would like to postprocess some nodal sets using python in Abaqus and now I'm stumped on this one. What I need is to extract nodal coordinates for every selected set in deformed state for the last frame of selected step. It could be any sort of array to be processed or output in...
  4. simulation_engineer_2022

    Evaluate tube geometrical parameters after forming operation in Abaqus/Visualization

    Hi everyone! I have a model of tube forming operation using Abaqus/Explicit and I need to evaluate two geometrical parameters of processed tube: 1. Ovality of tube cross-section, which requires measurement of minimum and maximum diameter of the machined tube; 2. Curvature of tube's...
  5. simulation_engineer_2022

    Hygroscopic stress and strain

    Hi everyone! I want to know how to model hygroscopic stress and strain in Abaqus in case of fiber reinforced composites. I've found moisture swelling model in Abaqus documentation but I'm not sure if it is what I need. The case is the following: Structure is made primarily of fiber reinforced...
  6. simulation_engineer_2022

    Dynamic stiffness problem show no results

    Hi everyone! I'm trying to get dynamic stiffness for cylindrical part with blind hole and could not get any result (all requested data have zero values). The scenario is the following: Clamp from one side, Reference Point with coupling from the other side (fix U1,U2,U3,UR1,UR2, free UR3)...
  7. simulation_engineer_2022

    Transferring results from Explicit to Standard with hyperelasticity

    Hi everyone! I'm trying to calculate natural frequencies of assembly containing hyperelastic parts under load. Due to complex contact conditions and high deformations Abaqus/Standard tends to diverge analysis and I've calculated stress state of this structure in Abaqus/Explicit. I know that...
  8. simulation_engineer_2022

    Rubber (hyperelastic) part failure estimation

    Hi everyone! I was wondering if there is a simple way to estimate rubber part is exposed to failure or not. For example if I have some hyperelasticity model coefficients ( Marlow, Yeoh, Ogden or any else) and I've finished FE-calculation of structure including rubber parts, how can I check if...

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