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EVA Expandable Vertical Array
8.6
Structural-analysis procedures
Electro-Voice maintains a structural pull-test facility in Burnsville, Minnesota USA, which
includes load cells with digital-electronic display and recording. The load cells are calibrated
annually by an independent laboratory to a standard traceable to the United States National
Bureau of Standards. This pull-test facility is capable of pulling to destruction both individual
rigging components and complete loudspeaker systems.
Electro-Voice utilizes state-of-the-art computer-modeling programs for structural analysis
throughout the development of loudspeaker systems. The computer modeling enables the
complex forces in the rigging components and enclosures to be analyzed for loudspeakers
assembled into arrays in both static and dynamic conditions.
Structural testing and computer modeling were used throughout the engineering development
of all EVA individual rigging components and complete loudspeaker systems described in this
manual. Testing and modeling involving both anticipated use and anticipated misuse were
performed as part of the analysis. Engineering prototypes were stressed to failure and designs
were revised based on those test results. Production systems and components were stressed
to failure for verification of the final designs.
Electro-Voice
Rigging-strength ratings and safety factors | en
Installation manual
39
2023-01 | 04 | F01U196199
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