繰返し粘塑性構成式を用いた60Sn-40Pb材の疲労寿命予測

概要

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In this paper, we propose a constitutive equation for cyclic viscoplasticity in which the viscoplastic potential function, the modified Prager-Ziegler kinematic hardening rule, and the Ramberg-Osgood law are incorporated. The applicability of the proposed constitutive equation to the deformation of 60Sn-40Pb solder alloys is Verified by a series of basic experiments, including a creep test and cyclic tension-compression test, which are performed at 303K, 323K and 343K. Moreover, fatigue tests are conducted at 303K, 323K and 343K to obtain the relation between the plastic strain work density per unit time and the number of cycles to fatigue failure. As a result, it is found that the fatigue failure of the 60Sn-40Pb solder can be successfully predicted using the plastic strain work density per unit time obtained from the simulation based on the constitutive equation.
一般社団法人日本機械学会の論文
1996-02-25