Each isolator houses five piezoelectric actuators and a passive rubber mount 100 times stiffer than standard pneumatic isolators.
The actuators control vibration along three axes. Piezoelectric actuators receive information on disturbances through absolute velocity sensors. The information from the sensors causes the actuators to expand and contract as required, moving out of the way of the vibration and diminishing or eliminating its impact.
Stacis is a six-degree-of-freedom system with a 0.20-Hz resonant frequency, 0.30-to 250 Hz active bandwidth, and a 0.30-second settling time after a step input.
Steven Ryan, Technical Manufacturing Co., 15 Centennial Dr., Peabody, MA 01960; (978)532-6330.
A recent example of a major CAE revamp is MSC Apex, released last month by MSC Software Corp. In a discussion with Design News, MSC executives noted that its next-generation platform is designed to substantially reduce CAE modeling and process time, “in some cases from weeks down to hours.”
The Thames Deckway would run for eight miles close to the river’s edge, rising and falling slightly with the tidal cycle. It will generate its own energy from a series of devices that will line the pathway and use a combination of sources to make the path self-sustaining.
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