Dear researchers;
I'm working on modelling a share frame structure in MATLAB the only parameters I have are: mass, stiffness and damping. and I want to design a base isolator for this kind of structure.
Is there any simple method for designing a base isolator based on the parameter I have (mass, stiffness and damping) ?
Kind regards.
Dear Mahdi,
You can try to design Friction Pendulum System (FPS) because the period of vibration of the isolated structure is independent of the support mass and dependent only on the geometry of the bearings. Furthermore,The lateral force is directly proportional to the weight they carry.
To generate simple model of the FPS, you only need to know the target period "T" (to calculate the radius of curvature "R"), the weight of your structure "W" and some information about the friction coefficient "mu".
T=2pi*sqrt(R/g)
F=(W/R)u+(mu*W)*sgn(udot)
where "u" is the FPS displacement and "udot" is the FPS velocity.
wish you all the best.
Thank you Mr. Amin Hosseini.
What about LRB isolation system ? is there any similar approach ?
Warm regards.
Hi,
You can find useful information about designing LRB Isolators in the attached file with a simple example.
I hope that this file can solve your problem.
Check the following reference Please.. it might's assist you in your question … Regards…
https://www.irjet.net/archives/V4/i6/IRJET-V4I6573.pdf
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