Abstract
By pushing lead back and forth through an orifice the process of extrusion can be used to absorb energy. When the lead is extruded it recrystallizes immediately, thereby regaining its original mechanical properties. Rather than the energy absorber being limited by the strength and work hardening of the lead it is limited by the heat capacity of the device and is therefore able to absorb energy during a number of earthquakes. To date extrusion energy absorbers of 20 kN x 2 cm stoke to 200 kN x 26 cm stroke have been tested at rates of 2 x 10-8 to 60 cm/sec and they behaved as "coulomb dampers" with nearly rectangular hysteresis loops and little rate dependence.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Bulletin of the New Zealand Society for Earthquake Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
