| 摘要 |
In a method for predicting bending life spans of wires, the wires, temperatures, pre-vibration shapes, and constraint conditions are set, and finite element models of the electric wires are formed using a finite element method. Natural frequencies for the pre-vibration shapes are calculated, and stresses in individual finite elements of the finite element models which correspond to the n atural frequencies are calculated, and a maximum stress is retrieved. Predicting functions corresponding to the plural electricwires and the atmosphere temperatures, which are set, are read out. Abending life span corresponding to the maximum stress of each electric wire, is acquired while referring to the predicting functions read out, and a shortest bending life span is obtained from the bending life spans, and output.
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