What it is

The LDS V984 is a high-force, water-cooled electrodynamic shaker rated at 36,000 lbf (160.1 kN) sine and random force, for vibration and shock testing of large payloads. A 23.25 in (591 mm) armature pairs a high-performance armature design with water-cooled coils to deliver 100 g sine acceleration and 78.7 in/s (2 m/s) velocity. An automatic armature and body position load compensation system handles larger loads, and the internal load support carries up to 4,409 lb (2,000 kg). The shaker is driven by the LDS DPA-K amplifier range and has been used in single- and multi-shaker configurations to test products such as satellites and missiles.

• Sine force: 36,000 lbf (160.1 kN) peak
• Random force: 36,000 lbf (160.1 kN) rms
• Half-sine shock force: 72,439 lbf (322.2 kN)
• Acceleration: 100 g sine peak; 70 g random rms
• Velocity: 78.7 in/s (2 m/s) sine peak, full field
• Displacement: 1.5 in (38 mm) peak-to-peak, continuous
• Usable frequency range: DC to 1.7 kHz
• Internal load support: 4,409 lb (2,000 kg)
• Amplifier: LDS DPA-K range, from 70K to 180/210K

What it is used for

Some of the use cases for the LDS V984 include:

• 3-axis testing of complete satellite systems: full-system vibration testing in single- or multi-shaker setups.
• Avionics and military hardware testing: qualification of avionics, missiles, and defense electronics.
• Structural dynamics testing: high-force excitation of large structures.
• Clean room environments: vibration testing where contamination control is required.
• Heavy test articles: payloads up to 4,409 lb (2,000 kg) on the internal load support, the highest in the LDS range.
• Multi-shaker, multi-axis applications: combining several shakers to drive large payloads.

Key features

• Water-cooled coils: a high-performance armature design combined with water-cooled coils delivers strong acceleration and velocity performance.
• Automatic load compensation: an automatic armature and body position load compensation system accommodates larger loads.
• Large armature: 23.25 in (591 mm) diameter, with M12, 1/2 UNC, or 1/2 UNF inserts as standard.
• Nine amplifier configurations: the DPA-K range runs from 70 to 210 kVA in 8 kVA increments, so force can be sized to the test program.
• Lin-E-Air trunnions: standard, with a body rotation gearbox for vertical or horizontal operation. Solid trunnions are available on request.
• Stiff suspension: 180,000 lbf/in (31.5 kN/mm) cross-axial and 10 × 10⁶ lbf·in/rad (1,130 kN·m/rad) rotational stiffness.
• Low stray field: under 9 gauss (0.9 mT) at 5.9 in (150 mm) above the table, full field.
• Options: combination shaker/slip table base, thermal barrier, and chamber support kit.

Why engineers pick it

36,000 lbf sine and random. Full rated force with the DPA 150/210K-TC or DPA 180/210K-TC, and 78.7 in/s (2.0 m/s) with the 180/210K-TC.

Scales with the amplifier. Nine DPA-K configurations run from 17,000 lbf (75.6 kN) with the DPA 70K-DC up to the full 36,000 lbf (160.1 kN).

Built for heavy payloads. The 4,409 lb (2,000 kg) internal load support and automatic load compensation keep large test articles centered.

Proven on large programs. The V900 series has been used in single- and multi-shaker configurations to test satellites and missiles.

The V984 system

• LDS DPA-K amplifier: a control bay plus power bays, from 70 to 210 kVA in 8 kVA increments.
• Field power supply (FPS) and cooling unit: field power and raw-water cooling for the shaker coils.

Site requirements

• Power: maximum required input is 244.59 kVA for the amplifier and 115.03 kVA for the FPS and cooling unit.
• Compressed air: 100 psi (6.88 bar).
• Raw water: the cooling unit uses up to 38.8 gal/min (147 L/min) at maximum capacity, with a maximum inlet temperature of 90 °F (32 °C).
• Ambient: shaker 40 to 86 °F (4.5 to 30 °C); amplifier, FPS, and cooling unit 41 to 104 °F (5 to 40 °C).
• Acoustics: 105 dBA shaker, up to 85 dBA amplifier, and 89 dBA FPS and cooling unit at 6.6 ft (2 m).

Configuring and scaling

Select the V984 configuration on this page and use Request Quote to start your system. Contact W5 for items the selector doesn't cover:

• Amplifier: DPA-K configuration.
• Trunnions: Lin-E-Air or solid.
• Armature inserts: thread choice.
• Other options: combination shaker/slip table base, thermal barrier, and chamber support kit.

For a lighter high-force system, the LDS V964 delivers 20,000 lbf (89 kN) on a 17 in (432 mm) armature.

Get the V984 specified, installed, and supported

W5 Engineering is the authorized North American distributor for LDS / Brüel & Kjær. We configure the V984 to your force, acceleration, and payload targets — amplifier configuration, trunnions, and cooling — then install it and support it. One PO covers the shaker, amplifier, cooling unit, ancillaries, and commissioning. Contact us with your test profile and we will return a configuration recommendation and quote.