What it is

The LDS V9940 is the largest and most powerful shaker in the LDS range, a water-cooled electrodynamic shaker rated at 67,440 lbf (300 kN) peak sine force. It is optimized for high half-sine shock performance and for reduced moving mass through pedestal bearing assemblies. It is built for shock and high-performance vibration testing of extra-large payloads up to 11,000 lb (5,000 kg), such as electric vehicle (EV) battery packs, e-axles, and e-powertrains. The shaker is driven by the LDS DPA320K or DPA384K amplifier and delivers up to 179,847 lbf (800 kN) half-sine shock force. It supports the UNECE R100 / UN 38.3 and ISO 12405 shock requirements.

• Sine force: 67,440 lbf (300 kN) peak
• Random force: 60,024 lbf (266.9 kN) rms
• Half-sine shock force: 179,847 lbf (800 kN), possible with 50 g, 6 ms and 30 g, 6 ms standard tests
• Acceleration: 100 g sine peak; 60 g random rms
• Velocity: 78.7 in/s (2.0 m/s) sine peak; 157.5 in/s (4.0 m/s) shock peak
• Displacement: 2.0 in (50.8 mm) continuous; 2.5 in (63.5 mm) transient in shock operation
• Usable frequency range: 5 Hz to 2,000 Hz
• Internal load support: 11,023 lb (5,000 kg)
• Required amplifier: LDS DPA320K or DPA384K

Proven at NASA

NASA's Marshall Space Flight Center in Huntsville, Alabama recently installed an LDS V9940 water-cooled shaker system to simulate launch and space-flight environments for large spacecraft payloads, running the same platform on a large bearing-guided horizontal slip table to move and test massive flight hardware. When the test article is a spacecraft, the shaker is the one thing that can't be the question mark.

What it is used for

Some of the use cases for the LDS V9940 include:

• EV battery pack shock testing: UNECE R100 / UN 38.3 shock at 50 g / 30 g, 6 ms and 11 ms, and ISO 12405 shock at 25 g, 15 ms.
• EV battery vibration testing: high-performance vibration testing of battery packs up to 11,000 lb (5,000 kg).
• Spacecraft and launch-environment simulation: supporting test programs to NASA GEVS (GSFC-STD-7000).
• E-axle and e-powertrain testing: shock and vibration testing of extra-large drivetrain assemblies.
• Large-footprint payloads: payloads up to about 10 ft (3 m) as standard, with other sizes on request.
• Combined environmental testing: integrating the shaker with a climatic chamber, with spray/mist, humidity, or flooding options.

Key features

• Pedestal bearings: instead of a full-size slip plate, pedestal bearings positioned around the perimeter of the slip table support the load with a smaller, lighter slip plate. This lowers moving mass, raises resonance, and improves system dynamics.
• Battery-optimized table designs: table layouts designed around battery test requirements, with moving masses minimized to maximize payload mass.
• Hermetically sealed shaker: designed for safe integration with climatic chambers and long-life performance.
• High shock capability: 179,847 lbf (800 kN) half-sine shock force and 157.5 in/s (4.0 m/s) shock velocity.
• Very stiff suspension: 409,989 lbf/in (71.8 kN/mm) cross-axial stiffness.
• Low gauss option: reduces stray magnetic field from 20 gauss (2.0 mT) to 3 gauss (0.3 mT).
• Armature inserts: raised stainless-steel inserts in M12 or 1/2 UNC, on pitch circles up to 28 in (711.2 mm).
• Chamber communication: programmed digital input signals from the controller link to climatic chambers and higher-level automation systems.

Why engineers pick it

No competing system publishes shock force at this magnitude. Nearly 180,000 lbf of half-sine shock puts full battery-pack shock certification on a single platform instead of a drop tower plus a shaker.

Built for EV battery standards. Rated to support UNECE R100 / UN 38.3 and ISO 12405 shock requirements on battery packs up to 11,000 lb (5,000 kg).

More payload, less moving mass. Pedestal bearings positioned around the slip table perimeter carry the load, so a smaller, lighter slip plate delivers higher resonance and cleaner dynamics for large-footprint batteries.

Selected for spacecraft-level testing. It is the platform NASA chose at Marshall Space Flight Center, backed by an LDS installed base and parts availability measured in decades, plus HBK's global calibration and support network.

Turnkey support. Full project management support is available for turnkey EV testing solutions, including climatic chamber integration.

The V9940 system

• LDS DPA-K amplifier: Class D, 320 to 384 kVA, with configurable interlocks for system monitoring and safe shutdown. It offers low distortion and wide bandwidth (20 Hz to 3 kHz at –3 dB) with a signal-to-noise ratio better than –68 dB.
• Cooling unit and field power supply: a demineralized water supply for the field and armature coils, a cooled hydraulic oil supply for the hydrostatic guide bearing, and the field power supply for the field coils.
• Matching transformer: an auto-wound transformer with output taps matched to the system's voltage and current requirements.
• Slip table hydraulic unit: a stand-alone high-pressure pump for HBT slip table bearings, in addition to the shaker hydraulic unit.
• Recommended combo: an HBT1500 or HBT2000 expansion slip table with a 59 × 79 in (1.5 × 2.0 m) head expander.

Site requirements

• Power: maximum required input is 340 kVA (DPA320K) or 425 kVA (DPA384K), plus 170 kVA for the cooling unit and FPS.
• Compressed air: 100 psi (6.9 bar).
• Raw water: 50.5 gal/min (191 L/min) to the cooling unit, with a maximum inlet temperature of 90 °F (32 °C).
• Ambient: amplifier, cooling unit, and FPS 41 to 104 °F (5 to 40 °C).
• Floor loading: typical combo mass is 70,550 lb (32,000 kg) with an HBT1500 slip table, or 77,160 lb (35,000 kg) with an HBT1500 slip table and 1,500 × 2,000 mm head expander.

Configuring and scaling

Select the V9940 configuration on this page and use Request Quote to start your system. Contact W5 for items the selector doesn't cover:

• Amplifier: DPA320K or DPA384K.
• Slip table and head expander: HBT1500 or HBT2000 slip table, plus head expander size.
• Pedestal bearings: layout.
• Armature inserts: thread choice.
• Other options: low gauss option, and climatic chamber integration with thermal management.

Get the V9940 specified, installed, and supported

W5 Engineering is the authorized North American distributor for LDS / Brüel & Kjær. We configure the V9940 to your shock, force, and payload targets — amplifier rating, slip table and head expander, pedestal bearing layout, and chamber integration — then install it and support it. One PO covers the shaker, amplifier, cooling unit, slip table, ancillaries, and commissioning. Contact us with your test profile and we will return a configuration recommendation and quote.