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Computerized Shock Simulation with TSIS

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IRON MIKE'S TOUR

Tour the World of Shock Simulation

TSIS SOFTWARE

Because of the extreme high velocity of many shock transients, and the high performance of our more sophisticated products, Taylor Devices has developed our own software code, called TSIS (Taylor Shock Isolation Simulation). TSIS can easily handle the most violent of inputs at an extremely high level of resolution. Plus, TSIS can fully model isolation devices with non-linear spring and damping elements.

TAYLOR PULSE DATABASE

Over the last 40+ years, we have searched out and compiled an extensive shock database. This data base includes virtually every significant shock event of the last 100 years.

Our software has been fully validated by our customers on full scale tests and by in-field experiences, using shock isolation components built to operational parameters defined by TSIS. These tests and experiences include wind storms, hurricanes, surface and underwater explosions, vehicle crashes, and earthquakes.



Defining our Problem

THE ISOLATED OBJECT:

A 1,000 pound object, fragility limit is 15 g's. This fragility level is roughly equivalent to what your computer monitor can survive without failure.

THE INPUTS:

To keep the simulation easy to follow, we will assume an input in the horizontal direction only. To show you the wide range of our shock data base, we will designate 2 diverse input pulses:


Pulse 1

PULSE 1

Our 1,000 pound object in a plywood shipping box, being slammed into a concrete retaining wall (believe it or not, this is a standard well documented test pulse from the U.S. military).

Pulse 2

 

PULSE 2

Our object installed on a ship, subjected to the underwater explosion of a World War II vintage moored mine, located 45 feet away from the ship's hull.


In our first simulation, instead of a Taylor Devices' shock isolator, we'll use a standard rubber shipping container mount, 20 Hz. frequency, 30 g's capacity, 10% damping.


TSIS Results

PULSE 1 Pulse 1


PULSE 2 Pulse 2


No good, try again

Pre-load (static centering force) = 2,000 lbs.
Endload (static full stroke force) = 3,800 lbs.
Available Stroke = ±1.5 in.
Damping = 650 V exp.6 lb x sec/in





PULSE 1 Pulse 1


PULSE 2 Pulse 2


Results now under 15 g's

As you've just seen, shock isolation with Taylor Isolators is the best solution to these . . . . and many other problems. Plus, we've seen that TSIS provides prompt and accurate results.

 

If you need help with an application, or would like additional information, literature, or publications, please contact:

Taylor Devices, Inc.
Attention: Web Applications Engineer
90 Taylor Drive
North Tonawanda, NY 14120-0748
USA

Telephone: 716-694-0800
Facsimile: 716-695-6015

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