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首页> 外文期刊>Key Engineering Materials >Fatigue Strength Evaluation of Load-carrying Fillet Weldments under Out-of-plane Bending Load using Structural Stress Method
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Fatigue Strength Evaluation of Load-carrying Fillet Weldments under Out-of-plane Bending Load using Structural Stress Method

机译：用平面应力法评估平面外弯曲载荷作用下角焊缝的疲劳强度

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摘要

Two types of load carrying fillet weldment, which are typical weld joints in ship structures, were examined under out-of-plane bending load by using structural stress approach. Finite element analyses using both solid and shell elements models have been performed for the assessment of fatigue strength. Basis for the derivation of structural stress method is discussed in detail. The calculated structural stress values for the fatigue strength evaluation of load carrying fillet weldments are independent of mesh size. In this study, drawbacks and doubts associated with applying the structural method such as the guidance of virtual node method and the application of three-dimensional equilibrium condition for solid model have been discussed accompanied by various case studies. In order to solve the problem of the solid model, the alternative method for solid model by using the equilibrium condition of the nodal force has been introduced.
机译：通过使用结构应力方法，在平面外弯曲载荷下检查了两种类型的载荷角焊缝，它们是船舶结构中的典型焊接缝。使用实体和壳单元模型进行了有限元分析，以评估疲劳强度。详细讨论了结构应力法的推导依据。用于承载角焊缝疲劳强度评估的计算结构应力值与网格尺寸无关。在这项研究中，伴随着各种案例研究，讨论了使用结构方法（如虚拟节点方法的指导）和三维平衡条件在实体模型中的应用所带来的弊端和疑问。为了解决实体模型问题，介绍了一种利用节点力平衡条件的实体模型替代方法。

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