FEA Hand Calculation Validation

Click For Summary
SUMMARY

The forum discussion focuses on validating Finite Element Analysis (FEA) results through hand calculations. Users recommend calculating the bending moment in beams using symmetry assumptions and applying the formula sigma = Mc/I to determine bending stress. This method aligns with the problem presented in the "Tube Bending Stress" thread on the Mechanical Engineering site, where similar validation techniques are discussed. The conversation emphasizes the importance of hand calculations in confirming FEA outputs.

PREREQUISITES
  • Understanding of FEA principles and methodologies
  • Knowledge of beam bending theory
  • Familiarity with the formula sigma = Mc/I for stress calculations
  • Basic skills in mechanical engineering concepts
NEXT STEPS
  • Research the principles of beam bending and stress analysis
  • Explore advanced FEA software features for validation
  • Study the "Tube Bending Stress" thread for additional insights
  • Learn about symmetry assumptions in structural analysis
USEFUL FOR

Mechanical engineers, FEA analysts, and students seeking to validate FEA results through traditional hand calculations.

Saints-94
Messages
63
Reaction score
1
I have ran an FEA analysis on part screenshot below. I wanted to do some hand calculations to validate the results. What formula should I use to calculate the stress?
upload_2017-3-19_13-55-19.png
 
Engineering news on Phys.org
Calculate the bending moment in the two beams (by symmetry, you should be able to assume that they are the same, assuming that the loading is otherwise symmetric), then use sigma = Mc/I to get the bending stress.
 
This is the same problem that Saints-94 subsequently entered On the Mechanical Engineering site as the "Tube Bending Stress" thread that we are now helping him with.
See that thread for the latest updates.
 

Similar threads

Flexure Plate FEA Validation
  • · Replies 4 ·
Replies
4
Views
1K
Fatigue life hand calculations based on static FEA results
  • · Replies 4 ·
Replies
4
Views
3K
Simplified Calculations for Nylon66 Composite Material Supporting Heavy Loads
  • · Replies 3 ·
Replies
3
Views
2K
FEA Torque Sim: Custom Wrench Design & SolidWorks File
  • · Replies 2 ·
Replies
2
Views
2K
Advice for learning enough Solidworks to pass the CSWA and CSWP exams
  • · Replies 7 ·
Replies
7
Views
5K
How Can We Calculate the Fatigue Life of a Simply-Supported Beam?
  • · Replies 6 ·
Replies
6
Views
3K
Compound physical pendulum - max velocity
  • · Replies 19 ·
Replies
19
Views
3K
Tube Bending Stress: Hand Calcs vs FEA Analysis
  • · Replies 21 ·
Replies
21
Views
14K
Corrugated tube (bellow) under axial load
  • · Replies 2 ·
Replies
2
Views
2K
Analytical verification of FEA involving preloaded bolt
  • · Replies 9 ·
Replies
9
Views
2K