The only RAC I know is the Reliability Analysis Center (Rome laboratory, Griffiss AFB), but I'm not sure they ever published structures manuals.
RAC
PO box 4700
Rome, NY 13442-4700
USA
DO160 section 7 not only contains the procedure for "shock/crash safety" test, which involve dynamic response from the structure, but also for "sustained" test, i.e. those for which the inertial load is applied as a "static" condition.
"Sustained" tests are basically acceleration tests, often...
To import data from an ASCII text file, just use the Matlab command LOAD -ascii
For example you have the file pressure.txt, then give the command
>> LOAD pressure.txt -ascii
You'll have the data loaded in a variable called "pressure".
The most critical position depends on the vibration spectrum of the service environment, first of all: is it airplane or helicopter environment?
Typical spectrums can be found in RTCA/DO160 section 8 or MIL-STD-810. Typically, you have to ensure the resonance frequencies of your item are never...