MEASUREMENT METHOD FOR ABSORPTION ENERGY

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the absorption energy of members in an impact test of a structure.SOLUTION: A measurement method for absorption energy is provided for measuring absorption energy in a process of causing a collision body 20 to collide with a second member 14 in an impact test using a structure 10 in which the second member 14 is coupled to a longitudinal-direction middle of a first member 12. The measurement method comprises the steps of: fixing both ends of the first member 12; collecting a relationship or the like between displacement of the collision body 20 and a load acting thereon in the impact test; obtaining absorption energy of the structure 10 using the relationship between the displacement of the collision body 20 and the load acting thereon; obtaining the absorption energy of the first member from a relationship between an elapsed time and loads generated in both the ends of the first member 12, respectively, and a relationship between the elapsed time and acceleration in a coupling part of the first member 12 and the second member 14; and obtaining the absorption energy of the second member 14 by subtracting the absorption energy of the first member 12 from the absorption energy of the structure 10.