For:
Xm < Xe, mKLM = KLM(elastic)m = me
Xe < Xm < Xp, mKLM = m[KLM(elastic) + KLM(elasto-plastic)]= ma
2
Xp < Xm < X1, mKLM = m[KLM(elastic) + KLM(elasto-plastic)]
4
+ KLM(plastic)
= mu
2
b. Methods for Predicting Dynamic Response. In the report, Structures
to Resist the Effects of Accidental Explosions - Class Notes by Keenan
(hereafter referred to as Class Notes), several methods are presented for
predicting the dynamic behavior of a single degree-of-freedom system
subjected to a dynamic load; namely,
1.
Phase Plane Method
2.
Moment Area Method
3.
Response Charts.