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Oct 20, 2016 at 5:34 vote accept Ice0cean
Oct 19, 2016 at 19:26 comment added alephzero "For free boundary condition, I can use a string to tie the beam or plates up and hang them on some place." That isn't a "free" boundary, unless you replace the "string" with something that is very flexible compared with the test piece itself, You can use something like a suitable grade of bungee cord - or maybe elastic bands, for a small-scale test. You want the natural frequency of the whole test piece "bouncing" as a rigid body on the string(s) to be low - ideally 10 or more times lower than the lowest frequency response that you want to measure.
Oct 19, 2016 at 10:53 answer added Wasabi timeline score: 2
Oct 19, 2016 at 10:47 comment added Ice0cean I want to use Steel.
Oct 19, 2016 at 10:45 history edited Wasabi CC BY-SA 3.0
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Oct 19, 2016 at 10:44 comment added Wasabi What material will the beam be? Steel, concrete, wood?
Oct 19, 2016 at 10:39 review First posts
Oct 20, 2016 at 11:17
Oct 19, 2016 at 10:35 history asked Ice0cean CC BY-SA 3.0