Atec MB-Dynamics-Modal50A - Manual (Page 2)

EASY TO FIXTURE & SETUP -- SLASHES SETUP TIME
• Clearance hole through armature and shaker allows unlimited
positioning along the axis of the stinger
• Collet chuck with clearance hole through armature and shaker
provides easy attachment of "one size fits all" stinger
• 'Piano wire' minimizes cross-axis measurement errors; allows
large static force to be applied without derating 50 lb dynamic
force
• Quick disconnect turnbuckles for adjustable suspension and
easy, 6 dof positioning
• Lightweight shaker, easy-mount inertial masses/accessories
allows one-man setup and portability to remote locations
• Trunnion base with two hand-knobs and three screw feet allow
adjustment to virtually any excitation angle
• Quick connect/disconnect of additional mass supplies large
inertial restraint for low frequency tests
UNIVERSAL -- NO NEED FOR 2 LBS FORCE OR 6" STROKE SHAKERS
• 1" stroke - sufficient for flexible structures and low frequency "suspended shaker" tests
• 50 pounds dynamic force - enough for large test articles such as mid- to full-size automobile
• Lightweight armature (<0.4 lb) enables testing small items
• Broad usable frequency range (1-4000 Hz) handles almost every modal survey
• Ideal for multi-shaker random, single-point random, multi-point sine dwell, and even burst random
ACCURATE -- FEWER MEASUREMENT ERRORS DUE TO FIXTURING
• The 'current mode' of MB's SS250VCF amplifier virtually eliminates mass loading of very small test items
• Lightweight armature minimizes mass loading - dramatically reduces force drop-off at resonances of the test specimen
• Low armature axial suspension stiffness (<15 lbs/in) assures shaker dynamics are decoupled from the test specimen’s
• Ultra thin stinger decouples force inputs in all directions except the driven axis - avoids "cross axis" error in force
measurement
• Applies/Maintains pre-loaded tension to the stinger, eliminating buckling problems - results in superior forcing function!
ACCESSORY KIT
Includes chucks, turnbuckles, nuts, bolts, bolt-on masses, wrenches for bolt-on masses, stingers, user's manual, and
extra storage for your stingers and load cells
SPECIFICATIONS
STROKE 1" peak-peak (continuous duty)
1.1" between stops
FORCE OUTPUT Convection Cooling:
Shop Air by User:
Portable Cooling:
25 pounds (peak)
50 pounds (peak)
50 pounds (peak) - optional
STINGER ATTACHMENTS Chuck and assortment of collets handles wire sizes from .020" to .125"
SHAKER ATTACHMENTS (for mounting) Floor: adjustable trunnion base & screw feet. Suspended: multiple
turnbuckles
TEST SPECIMEN STATIC PRE-LOAD Capable of tensioning stinger in excess of 50 pounds
WEIGHT Shaker with trunnion base: 55 pounds
BOUNCE MODE OF 'LARGE INERTIAL
CONFIGURATION' ON ARMATURE SUSPENSION Approx. 1 Hz
DIMENSIONS 11 ½" H (to top of collet chuck with feet retracted) 7 ½" x 9 ¼" footprint
DRIVE CABLE LENGTH 30’ standard (100’ cable available as option)
Specifications subject to change without notice 0297