| 摘要 |
The sacrificial tube shock attenuation device services as a deformable energy absorbing system designed to be employed between a bumper receiving a potentially destructive force and a payload which is to be protected from the force. The device is composed of a tube assembly running through and aligning apertures of a maul, or series of mauls, which is (are) attached to the bumper and the apertures of a pair of stators, or multiple pairs of stators, that each maul is situated between. The stators are attached to the payload. When overloaded the maul(s) moves relative to the stators causing a misalignment of their respective apertures resulting in deformation of the tube assembly. A simple tube assembly may be comprised of a single tube. A more complex tube assembly may be comprised of multiple tubes within tubes depending on the anticipated overload. In a multi-tube assembly the inner tubes receive the load consecutively as the misalignment of the apertures of the maul and stators progresses. A rod may be inserted into the innermost tube for safety in case the load is high enough to sever each of the tubes in the tube assembly. The rod would stop further misalignment of the apertures of the maul and stators thereby positively limiting stroke. The sacrificial tube shock attenuation device absorbs shocks such that it takes increasing force to deform the tubes as the deformation process progresses.
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