Apparatus, method and reusable model-structure for impact testing vehicle components
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United States of America Patent
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Jul 29, 1997
Grant Date -
N/A
app pub date -
Dec 20, 1995
filing date -
Jun 22, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The front body assembly of a vehicle is simulated by a reusable model-structure (6) featuring a pair of side members (8, 9) collapsible accordion fashion and each comprising a number of arms (16, 18) hinged in series with one another by respective articulating means (19, 20), and a number of hydraulic friction joints (20) constituting at least some of the articulating means. Each hydraulic joint (20) presents an adjustable sliding torque by virtue of being connected to pressurized fluid supply means (43) via a respective pressure regulating valve (42). Once calibrated, the model-structure (6), which thus presents the same collapse performance as the front body assembly being simulated, is fitted with the test component (2) and used for impact testing; and, following impact, the collapsed model-structure (6) is restored to its original configuration by means of hydraulic actuators (38), after first zeroing the pressure of the hydraulic joints (20).
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