| 摘要 |
An extrusion damper for interposing between two members to absorb energy of motion which may be induced between the two comprises a rigid jacket (1) surrounding a body of a plastically deformable energy absorbing material (3) such as lead and a shaft (2) which moves through the core to deform the core during induced motion. The shaft is of an irregular shape such as a sinusoidal, helix or screw shape or similar. The body of energy absorbing material may optionally be subjected to approximately hydrostatic pressure preferably exceeding the shear yield stress of the energy absorbing material.
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