Assessment of ship structure under fatigue loading: FE benchmarking and extended performance analysis

IF 1.1 Q4 MECHANICS

Curved and Layered Structures Pub Date : 2022-01-01 DOI:10.1515/cls-2022-0014

Aprianur Fajri, A. Prabowo, N. Muhayat

引用次数: 10

Abstract

Abstract This paper presents a numerical procedure based on the finite element (FE) method using ANSYS Workbench software to analyse fatigue phenomena in ship structures. Fatigue failure prediction is used as a stress–life approach, when the stress is still in a linear area. This condition is frequently referred as high-cycle fatigue. Five geometric shapes taken from midship points on the structure of a ship are sampled. There are four types of materials: HSLA SAE 950X, medium-carbon steel, SAE 316L, and SAE 304L. The types of loading imposed on each sample include three conditions: zero-based, zero mean, and ratio. Mesh convergence analysis is conducted to determine the most effective mesh shape and size for analysing the structure. The results showed that the configuration of the geometric shapes, materials used, loading schemes, and mean stress theory affect the fatigue characteristics of the structure.

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疲劳载荷下船舶结构的评估：有限元基准和扩展性能分析

摘要本文提出了一种基于有限元法的数值程序，利用ANSYS Workbench软件分析船舶结构的疲劳现象。当应力仍处于线性区域时，疲劳失效预测被用作应力-寿命方法。这种情况通常被称为高周疲劳。从船舶结构上的船舯点采集的五个几何形状被采样。有四种类型的材料：HSLA SAE 950X、中碳钢、SAE 316L和SAE 304L。施加在每个样本上的载荷类型包括三个条件：零基、零均值和比值。进行网格收敛分析以确定用于分析结构的最有效网格形状和大小。结果表明，几何形状、所用材料、加载方案和平均应力理论的配置会影响结构的疲劳特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Curved and Layered Structures MECHANICS-

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

14 weeks

期刊介绍： The aim of Curved and Layered Structures is to become a premier source of knowledge and a worldwide-recognized platform of research and knowledge exchange for scientists of different disciplinary origins and backgrounds (e.g., civil, mechanical, marine, aerospace engineers and architects). The journal publishes research papers from a broad range of topics and approaches including structural mechanics, computational mechanics, engineering structures, architectural design, wind engineering, aerospace engineering, naval engineering, structural stability, structural dynamics, structural stability/reliability, experimental modeling and smart structures. Therefore, the Journal accepts both theoretical and applied contributions in all subfields of structural mechanics as long as they contribute in a broad sense to the core theme.