Multi-objective topology optimization of deep drawing dissimilar tailor laser welded blanks; experimental and finite element investigation

Aminzadeh, Ahmad; Parvizi, Ali; Moradi, Mahmoud

doi:10.1016/j.optlastec.2019.106029

Cited by 44 publications

(23 citation statements)

References 36 publications

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“…The optimum setting was achieved by using Minitab software, which is presented in Table 10. In addition to maximizing depth penetration and minimizing weld bead width, it should be noted that the low productivity of TIG welding should be covered and optimized [25]. In criteria 1 of the optimum conditions, partial penetration occurs.…”

Section: Optimizationmentioning

confidence: 99%

Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Karganroudi

Moradi

Attar

et al. 2021

Metals

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This study involves the validating of thermal analysis during TIG Arc welding of 1.4418 steel using finite element analyses (FEA) with experimental approaches. 3D heat transfer simulation of 1.4418 stainless steel TIG arc welding is implemented using ABAQUS software (6.14, ABAQUS Inc., Johnston, RI, USA), based on non-uniform Goldak’s Gaussian heat flux distribution, using additional DFLUX subroutine written in the FORTRAN (Formula Translation). The influences of the arc current and welding speed on the heat flux density, weld bead geometry, and temperature distribution at the transverse direction are analyzed by response surface methodology (RSM). Validating numerical simulation with experimental dimensions of weld bead geometry consists of width and depth of penetration with an average of 10% deviation has been performed. Results reveal that the suggested numerical model would be appropriate for the TIG arc welding process. According to the results, as the welding speed increases, the residence time of arc shortens correspondingly, bead width and depth of penetration decrease subsequently, whilst simultaneously, the current has the reverse effect. Finally, multi-objective optimization of the process is applied by Derringer’s desirability technique to achieve the proper weld. The optimum condition is obtained with 2.7 mm/s scanning speed and 120 A current to achieve full penetration weld with minimum fusion zone (FZ) and heat-affected zone (HAZ) width.

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Section: Optimizationmentioning

confidence: 99%

Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Karganroudi

Moradi

Attar

et al. 2021

Metals

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“…The weight coefficients of four working conditions, including bending, torsion, braking and turning, in the static stiffness, are determined first. According to Table 6, the relative importance ratio between each working condition is derived, and the matrix M is established: 8, (9) and (10). According to Eq.…”

Section: B Multi-objective Topology Optimizationmentioning

confidence: 99%

“…Although this method is simple to calculate, it is quite difficult to solve all Pareto optimal solutions for nonconvex optimization problems [7,8]. In recent years, a multi-objective topology optimization method based on compromise programming theory has been widely used by researchers [9][10][11]. However, it might be unreasonable for designers to directly assign values for weights because of the uncertain, incomplete, and local properties inherent to weights themselves [12].…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Topological Optimization of an Electric Truck Frame Based on Orthogonal Design and Analytic Hierarchy Process

Qiao¹,

Xu²,

Wu³

et al. 2020

IEEE Access

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The electric truck frame as a vital load-bearing component has aroused growing attentions due to its enormous potential in lightweight. However, few systematic studies have been performed on the multi-objective topological design of the frame attributable to its complexity on loading and conflicting objectives. This paper aims to develop a multi-objective topology optimization strategy of the electric truck frame based on the hybrid decision making method combining orthogonal test design (OTD) and analytic hierarchy process (AHP). The hybrid strategy is performed to obtain a new set of weight ratio combination from objective data and subjective judgment. The topological results show that the overall performance of the optimal frame is better than any of the methods applied alone. By comparing, it is found that the strength and stiffness of the optimal frame is higher than that of the original frame from the perspective of static conditions, and the low-order natural frequency of the optimal frame is significantly improved. It demonstrates that the proposed approach could be as an effective tool for multi-objective topology optimization of the electric truck frame in seeking lightweight and comprehensive mechanical performance. The hybrid strategy might be expected to provide some guidance for more complicated engineering problems. INDEX TERMS Electric truck frame, multi-objective design, topology optimization, orthogonal test, analytic hierarchy process.

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“…The laser material processing and especially laser welding offers a small heat-affected zone (HAZ) and deep penetration capacity, which provides deep welding and narrow [12]. Recently, the automation of laser operation has been increasing welding performance and cadence.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method of Defect Detection Based on Experimental Investigation of Galvanized Steel Welded Plates Using Wobble Laser Process

Karganroudi

Aminzadeh

Kemda

et al. 2021

Preprint

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This paper aims at investigating the effect of laser welding parameters on the hardness profile, using hardness mapping analyses, and welding geometry of galvanized steel plates. Hardness distribution and geometry deflection of galvanized welded thin plates are commonly applied in fields where the weld quality is of utmost importance. Due to the welding process and material condition, welding galvanized steel is one of the problematic matters in welding technology. Here, the design of experiment (DOE) approach is used to study the effect of process parameters. Using a pattern matrix of micro-indentation hardness experiment, the welding defects are visualized on hardness profile of the weld cross-section. The effect of process parameters on welding defect formation is then qualitatively analyzed. The geometrical defects of welding such as weld width and voids are then quantitatively studied based on analysis of variance (ANOVA), and predictive models of welding voids and weld seam width are developed based on the regression method. Response surface method (RSM) is then applied to define the trend of process factors interaction on the welding defects. The experimental results confirm the reliability of developed predictive models of welding defects geometry, weld width, and voids area of laser-welded galvanized plates.

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Multi-objective topology optimization of deep drawing dissimilar tailor laser welded blanks; experimental and finite element investigation

Cited by 44 publications

References 36 publications

Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Multi-Objective Topological Optimization of an Electric Truck Frame Based on Orthogonal Design and Analytic Hierarchy Process

A Novel Method of Defect Detection Based on Experimental Investigation of Galvanized Steel Welded Plates Using Wobble Laser Process

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