Three-Dimensional Thermo-Elastic-Plastic Finite Element Method Modeling for Predicting Weld-Induced Residual Stresses and Distortions in Steel Stiffened-Plate Structures

• 作者: Chung Min Hyun Jeom Kee Paik Myung Su Yi
• 来源期刊: 世界工程和技术(英文)
• 学科: 数学
• 关键词: STEEL Stiffened-Plate Structures Weld-Induced Initial Distortion Weld-Induced Residual Stress Nonlinear FINITE ELEMENT Method THREE-DIMENSIONAL Ther-mo-Elastic-Plastic FINITE ELEMENT Analysis Full Scale Measurements
• 年，卷（期）: sjgchjsyw_2018,（1）
• 页码范围: 176-200
• 页数: 25页
• 分类号: O1

摘要

The objective of the present paper is to develop nonlinear finite element method models for predicting the weld-induced initial deflection and residual stress of plating in steel stiffened-plate structures. For this purpose, three-dimensional thermo-elastic-plastic finite element method computations are performed with varying plate thickness and weld bead length (leg length) in welded plate panels, the latter being associated with weld heat input. The finite element models are verified by a comparison with experimental database which was obtained by the authors in separate studies with full scale measurements. It is concluded that the nonlinear finite element method models developed in the present paper are very accurate in terms of predicting the weld-induced initial imperfections of steel stiffened plate structures. Details of the numerical computations together with test database are documented.