Structural Engineering

Structural Engineering - Facilities

Stuctural Lab Baldwin MachineStructural Research Laboratory

The Structural Research Laboratory contains

  • a 2.4 million lb servo-controlled Baldwin universal testing machine
  • manually-controlled 300,000 and 120,000 lb Baldwin testing machines
  • a modern MTS Testing system with a pumping capacity of 200 gpm
  • numerous controllers and servo-controlled actuators of various sizes
  • special-purpose test machines, such as a bearing test rig

The laboratory also includes a strong floor, a reaction wall, and an earthquake simulator. A wide range of electronic and mechanical equipment is available for the measurement of load and response in structures. This includes fully computerized data acquisition and processing systems.







Structural Vibrations Laboratory


structural vibrations laboratory

Figure 1: Structural vibrations laboratory.

The structural vibrations laboratory is outfitted with experimental testing equipment directed at studying the vibrations and stability of lightweight structures common in aerospace, mechanical, and naval applications. Additionally, the equipment is well-suited to qualitative studies of scaled civil engineering structures, or structural components. Nonlinear response, and the many unpredictable phenomena (for example chaos, coexisting solutions, and fractal bifurcation thresholds) is a common challenge to all of these research areas.

One of the primary tools of the Structural vibrations laboratory at UW is the 1200 Lb. electrodynamic shaker shown in Figure 1. This shaker may be used to apply dynamic point loads to small-scale structural components, or more commonly to apply inertial loading through base motion.  It also contains a small slip table for qualitative small-scale seismic research. As a vibrations lab, displacement sensing, accelerometers, and load cells are other tools of the trade.

Nonlinear Resonance

Fractal Basins of Attraction


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