Optimization on strength spot welding joint trough finite element modelling indentation approach

International Conference on Design, Energy, Materials and Manufacture

能源学;材料科学

Budiarsa, I.N.^1 ; Astika, I.M.^1 ; Antara, I.N.G.^1 ; Karohika, I.M.G.^1

Mechanical Engineering. Dept, Faculty of Engineering, Udayana University, Kampus Bukit Jimbaran Bali, Bali

80361, Indonesia^1

关键词: Constitutive materials;    Environmental-friendly;    Finite element modelling;    Material deformation;    Model based approach;    Numerical approaches;    Numerical experimental;    Urban transportation systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/539/1/012042/pdf
DOI  :  10.1088/1757-899X/539/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Failure behaviour of spot welding are important in order to design the weld strength on dissimilar spot welded joint as a significant step to reduce vehicle weight in the development of urban transportation systems. Environmental friendly. Including in this case to take positive measures to reduce CO2 emissions and reduce fuel consumption. The material failure behaviour, properties parameter of plastics materials and fracture of materials can be easily determined when the specimen material standards (i.e parent metal) but for the results of spot welding joint testing standards are not applicable to characterize the HAZ and spot welding nugget because it is constrained by a complex structure and a small sample size. One potential approach to be developed in the behaviour of material failure, parameter plastic properties of material is to combine the numerical-experimental method. Where ph-curve indentation experimental results combined with numerical approach through Finite Element (FE) modelling. Approach was established to be used for reverse (inverse) testing of the nature of constitutive material (i.e the yield stress (σy), the coefficient of strain hardening (n)) for nugget, HAZ and the parent material (base). In this approach the Load data of material deformation used as input data for finite element model (FE) which simulates the geometry and boundary conditions of the experiment. Finite element model (FE) Model-based approaches are developed, validated then used to predict the effect of nugget size and thickness of the sheet metal on the strength of the weld joint points with different materials (dissimilar material).