An equivalent stress method for the structural analysis of derrick with initial deformation is offered.
为此，采用等价应力法对有初始变形的井架进行结构分析。
The accumulated fatigue damage was calculated in frequency domain by equivalent stress method and equivalent narrow band method respectively.
在频域内分别用等效应力法和等效窄带法计算了累积损伤。
In this paper, the assumption of equivalent stress method only used near the dam heel and toe and the middle regions stress USES the FEM calculated stress.
针对该问题，提出局部等效应力方法，即对坝基面坝踵和坝趾局部区域进行局部等效处理，坝基面中间大部分区域仍采用有限元计算。
Thmugh the comparison with both the simplified method of structural mechanics and the finite element equivalent stress method, the feasibility of the method is verified.
通过与结构力学简化方法和有限元等效应力法的比较，验证了该方法的可行性。
Thmugh the comparison with both the simplified method of structural mechanics and the finite element equivalent stress method, the feasibility of the method is verified.
通过与结构力学简化方法和有限元等效应力法的比较，验证了该方法的可行性。
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