Buckling Experiment: Preparing a Test Rig

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SUMMARY

The discussion focuses on preparing a test rig for a buckling experiment, specifically using a fixed-fixed Euler column setup. The user plans to utilize an Instron machine for testing an aluminum rod with a diameter of 6.63 mm and a length of 420 mm. Concerns were raised about the adequacy of the calculated buckling load of 377N, prompting a request for hand calculations and fixture recommendations. An alternative method suggested involves using a steel profile with a bucket to measure bending variables as water is gradually added.

PREREQUISITES
  • Understanding of Euler buckling theory
  • Familiarity with compression testing using an Instron machine
  • Knowledge of fixture design for experimental setups
  • Basic principles of load measurement and analysis
NEXT STEPS
  • Research fixture design for aluminum rod testing
  • Learn about hand calculations for buckling load analysis
  • Explore alternative buckling test methods using water load
  • Study the calibration and setup of the Instron machine for compression tests
USEFUL FOR

Mechanical engineers, materials scientists, and students conducting experiments on structural stability and buckling analysis.

pattigirish
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Hi i am doing my project on corelation between experiment and analysis for buckling. So for doing the experiment i should prepare my own test rig . but how it is possible could anyone help me in my project?
 
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That's a really broad question. You should provide more details, and what kinds of equipment you have access to.

If you just want to measure the buckling load of a fixed-fixed Euler column then just make samples that fit into a compression test machine.
 
ya its a fixed-fixed end and i can do that on instron machine. the main problem is that which type of fixtures should i do for doing on aluminium rod. the dia of aluminium rodi is 6.63 mm
and length 420 mm. can u make hand calculations for this as well because i got 377N but my professor that its to low u should do once again.
 
take a steel profile, put a bucket on top and gradually fill it with water, given that with every phase you measure the bendage variables.
 

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