Modal Exciter 100 lbf
When performing experimental modal analysis, the choice of excitation function and system can make the difference between a good measurement and a poor one. For many modal test applications, an electrodynamic shaker system is best suited for creating an appropriate input forcing function. Distributing adequate input force energy across the test structure and obtaining accurate and reliable input force measurements is critical for successful modal testing. This often requires a shaker that is highly portable, rugged and easy to setup in order to facilitate the best exciter location (relative to the test structure) while minimizing any unwanted interaction between the exciter and test structure.
The Modal Shop 2100E11 Modal Shaker, a lightweight electrodynamic modal exciter, is capable of providing 100 lbf (440 N) of peak force excitation in a small footprint weighing just 33 pounds (15 kg). With a 1” stroke and useful frequency range beyond 5400 Hz, the 2100E11 is suitable for structural testing and experimental modal analysis applications, including single and multiple inputs (SIMO and MIMO) using random, burst random, sine dwell or chirp excitation signals.
Through-hole armature with chuck and collet attachment provides simple setup with modal stingers.
Lightweight and portable – weighing just 33 lbs (15 kg).
Trunnion base provides flexibility when choosing best exciter location(s).
1” stroke and broad frequency range supply adequate input energy for most modal test applications.
- Forced air cooling sufficient to meet full shaker performance (100 lbf pk) specifications.
The 2100E11 Modal Shaker is supplied in a trunnion base allowing full rotation for easy setup. The through-hole armature design with chuck and collet attachment is ideal for use with either traditional modal stinger rods, like the TMS 2150G12 1/16” diameter stingers, or piano wire stingers, like the TMS K2160G Piano Wire Stinger Kit with force sensor quick disconnect. These stingers greatly simplify test setup with an easy connection to the force sensor and test structure, and help decouple cross-axis force inputs, minimizing or eliminating input force measurement errors while using the modal exciter. For horizontal force inputs, the 2100E11 adapts directly to The Modal Shop’s 2050A Lateral Excitation Shaker Stand. Using four turnbuckles, the modal shaker is supported by its trunnion base and can be adjusted over a wide horizontal and vertical area relative to the test structure.
For a discussion of Frequently Asked Questions (FAQ) on Modal Shakers or related force excitation topics, please click here.
2100EA13 Shaker Cable, 20 ft (6 m).
Shaker Accessory Kit: includes 2100E14 chuck with collets, 2100EA07 10-32 adapter, 2150G12 modal stingers (1/16” diameter rod with 10-32 threaded end, pack of three), 2155G12 modal stingers (3/32” diameter rod with 10-32 threaded end, pack of three), K2160G Piano Wire Stinger Kit (includes quick disconnect load cell adapter), and spare fuses & flexures.
SUGGESTED ACCESSORIES AND RELATED EQUIPMENT:
2050E05 Shaker Amplifier, selectable voltage / current control
2100E21 SmartAmpTM Amplifier
2100E18 Power Amplifier
2050A Lateral Excitation Stand
2100E13 Modal Accessory Kit, for use with 2050A excitation stand
2050E03 Cooling Package, 110V portable
2100E16 Cooling Package, 220V portable
PCB 288D01 ICP® Impedance Head driving point sensor
PCB 208C01 and PCB 208C02 ICP® force sensors