Finite Element Symmetry Problem

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SUMMARY

The discussion focuses on a finite element analysis (FEA) problem involving a cylinder with symmetrical properties. The user modeled a quarter of the cylinder but observed that while stress results were consistent with a full model, deflections varied significantly. A suggestion was made to check the deflection constraints for the quartered section, emphasizing that the edges must remain perpendicular to the cut planes to ensure accurate results.

PREREQUISITES
  • Understanding of Finite Element Analysis (FEA)
  • Familiarity with stress and deflection concepts in structural analysis
  • Knowledge of boundary conditions in FEA modeling
  • Experience with modeling symmetrical structures in software like ANSYS or Abaqus
NEXT STEPS
  • Review boundary condition settings in FEA software for symmetrical models
  • Investigate the impact of edge constraints on deflection results
  • Learn about mesh refinement techniques in FEA to improve accuracy
  • Explore the use of ANSYS or Abaqus for modeling cylindrical structures
USEFUL FOR

Engineers and analysts involved in structural design, particularly those working with finite element modeling of symmetrical components and seeking to understand the nuances of stress and deflection analysis.

scootypuffsnr
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Hi,

I am running a finite element on a cylinder with that converges at the bottom for a opening, which is symmetrical in both directions so i modeled one quarter but the problem is my stresses are the same with when i compare with a full model that i also done but the deflections are different

any help will be greatly appreciated, thank you
 
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scootypuffsnr said:
Hi,

I am running a finite element on a cylinder with that converges at the bottom for a opening, which is symmetrical in both directions so i modeled one quarter but the problem is my stresses are the same with when i compare with a full model that i also done but the deflections are different
Maybe the deflection constraints for the quartered section are incorrect? The edges must remain perpendicular to the cut planes.
 

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