Recent content by marcas3
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Natural frequency of beam exposed to sinusoidal force
So if a mode only tells you about the possible motion of a structure, how do you know which mode best describes the beam's motion? I know that such a vibrating system can have multiple modes but is it possible for some modes to have little or no effect on the response? How do you know which ones...- marcas3
- Post #3
- Forum: Mechanical Engineering
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Natural frequency of beam exposed to sinusoidal force
Hello, I am taking a vibrations course and we are currently talking about using PDEs to find responses of beams. In the book, there is an equation to find the natural frequencies of a simply supported beam under an axial load: omega = (pi^2/l^2)*sqrt(EI/roA)*sqrt(n^4 + (n^2*P*l^2)/(pi^2*EI))...- marcas3
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- Beam Force Frequency Natural Natural frequency Sinusoidal
- Replies: 5
- Forum: Mechanical Engineering
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Lumped mass approach to wing tip vibration
Turns out MATLAB code was correct :)- marcas3
- Post #2
- Forum: Engineering and Comp Sci Homework Help
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Lumped mass approach to wing tip vibration
Homework Statement Hello, I would just like to make sure I am doing the problem correctly. What I have is a cantilever uniform beam that is fixed at one end and free on the other. Basically, it is a wing and I am using a lumped mass approach to find a graphical representation of the wing's...- marcas3
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- Approach Mass Vibration
- Replies: 1
- Forum: Engineering and Comp Sci Homework Help
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Isobaric heating to find volume and temperature
Homework Statement Initially, 2 kg of water is at 250 Celsius and it exists as a saturated liquid. It is now isobarically heated until all of it is converted to saturated vapor. Find final temperature and volume. Homework Equations Thermodynamic tables and the use of interpolation...- marcas3
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- Heating Temperature Volume
- Replies: 1
- Forum: Biology and Chemistry Homework Help