| 摘要 |
PROBLEM TO BE SOLVED: To evaluate dynamic and thermal-dependent mechanical characteristics of a lead material, in a numerical analytical method for analyzing a stress-strain relationship of the lead material using a finite element method. SOLUTION: This analytical method or the like uses an expression comprising an item related to an initial yield load and a plastic strain, an item related to the plastic strain and a temperature, and an item related to the plastic strain and a plastic strain rate, as to a tensile stress, and taken in with temperature dependency and strain rate dependency of the stress-strain relationship into consideration as an elastoplastic constitution expression of the lead material. COPYRIGHT: (C)2008,JPO&INPIT
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