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Have you tried direct analysis, if there are small amount of elements the results is better.

Hi uglyfatjoe and Cessna1, Some little remarks: Question A: if you are considering rigid body displacement: accel=(2.pi.freq)^2.disp so 3 G-peak @ 13 Hz -> 4,4 mm displacement 3 G-peak @ 30 Hz -> 0,82 mm displacement Not considering resonance.. So 13 Hz is much more severe. Question B...

Hi guys, Thanks again,as Greglocock pointed, the system is very cheap. We will get a shot down here. The idea is to have some accelerometer on the foot and also at cushion region in order to verify the amount of vibratory level imposed. We will be controlling by a in-house executable...

Thanks for all posts. Here is the deal: We are designing a mock-up for confort assessment. Due to commercial and practical aspects, we are using the Buttkicker shaker. What we are looking for is to create an vibro-acoustic atmosphere, and we are not so worried about amplitude precision...

Hi, I have a little question. We are intending to use a small shaker (ButtKicker LFE), the supplier was very limited information available: Frequency response: 5-200 Hz Nominal Impedance: 4 Ohms Power Handling: 400 Watts min. Through the whole range of frequency the amplitude of acceleration...