Application of Finite Element Analysis in Multiscale Metal Forming Process

Jiang, Zhengyi; Xie, Haibo

doi:10.5772/intechopen.71880

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…Parameters that are very difficult to measure can be analyzed. Jiang [4] describes a sophisticated FEM analysis of the rolling process with the consideration of friction variation models. FEM can also be used to investigate surface roughening in the forming process [5].…”

Section: Introductionmentioning

confidence: 99%

Numeric Simulation of Part Assembly During Pressing Within Assembly Production Process

Srb¹,

Vosáhlo²,

Petrů³

2023

Atlantis Highlights in Engineering

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The article deals with numerical analysis for a study of the stress distribution and deformation of the component assembly during pressing within the assembly manufacturing process. The assembly design consists of a steel casing and a steel bottom and top lid. The fusion of the casing to the lids is realized through the plastic deformation of the structural elements of the casing. The quality of the combination of the parts is influenced by, among other things, the manufacturing tolerances of the individual semi-finished products, the shape of the forming tool and the course of the forming force. A numerical simulation was created using an explicit algorithm, where the corresponding marginal and initial conditions and time dependency of the manufacturing process were defined. The different parts of the assembly were in delicate contact, so as to predict the force action in the different parts during the manufacturing process. The model created can be used to upgrade the geometry of individual parts of the report as well as the forming tool and contribute to the optimization of the production process.

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Section: Introductionmentioning

confidence: 99%

Numeric Simulation of Part Assembly During Pressing Within Assembly Production Process

Srb¹,

Vosáhlo²,

Petrů³

2023

Atlantis Highlights in Engineering

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the industrial introduction of the cold rolling method is fraught with certain diffi culties. Since the cold rolling process is not always optimized according to papers [22][23][24][25][26], in practice premature destruction of the rolling tool in case of the low accuracy of the rolled rib profi le is often observed, as is proven by the authors of papers [27,28]. As can be seen from the above, the improvement of the rib rolling forming technology on metal…”

Section: Introductionmentioning

confidence: 99%

Calculation methodology for geometrical characteristics of the forming tool for rib cold rolling

Oleinik¹,

Kapitanov²,

Alexandrov³

et al. 2020

J Appl Eng Science

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Calculation of the forming tool for rib cold rolling by the enveloping method is usually complex and very time-consuming. The cold rolling process is not always optimized, resulting in a poor quality of the rolled rib profi le and premature failure of the forming tool. Improvement in techniques of rib rolling on metal heat-exchange tubes is a challenging technological task, which has defi ned the purpose of the present work -the study of the effect of the forming tool for cold rolling of ribs by enveloping method on the accuracy of geometrical dimensions of ribbed surfaces. Absence of a well-developed calculation methodology for this type of tool now adversely affects the rate of manufacturing application of rib cold rolling processes. Since the main task when introducing the rib rolling process is to achieve the required accuracy of the work-piece, it seems expedient to improve calculation methodologies allowing designing a forming tool for rib cold rolling taking into account the required accuracy of geometrical dimensions of the ribbed surfaces. The present work proposes a methodology that allows performing calculations of parameters required for manufacturing and supervision over various rolling tools. Experimental approbation data of the outlined methodology results are presented. Because of deformation processing without additional technological operations, the effect of surface hardening has been achieved, and the roughness of rolled ribbed surfaces Ra was 0.8 μm, which is comparable in quality only with fi nishing machining. It was demonstrated that when calculating the coordinates of profi le points, the geometry of the lead-in, as well as rolls with a screw rib, it is particularly important to determine the angle of crush forming rolls and the y-coordinate of rolling bars as the main characteristics of the profi le.

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Compression and Fatigue Testing of High-Strength Thin Metal Sheets by Using an Anti-Buckling Device

Kopeć

2023

Exp Mech

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Background The modelling of the sheet metal forming operations requires accurate and precise data of the material plastic behaviour along non-proportional strain paths. However, the buckling phenomenon severely limits the compressive strain range that could be used to deform thin metal sheets. Objective The main aim of this paper was to propose an effective device, that enables to determine of accurate stress-strain characteristics of thin metal sheet specimens subjected to axial deformation without buckling and with a special emphasis on friction correction. Methods In this paper, an anti-buckling fixture was proposed to assess the deformation characteristics of X10CrMoVNb9-1 (P91) power engineering steel, and DP500 and DP980 dual-phase steels, under compression loading. The fixture enables monitoring of the friction between the specimen and supporting blocks during the test, and thus the precise stress response of the material could be determined. Results The effectiveness of the fixture was evaluated under tension–compression cyclic loading and during the compression tests in which high-strength thin metal sheets were successfully deformed up to 10% without specimen buckling. Furthermore, the successful determination of a friction force variation between supporting blocks and the specimen during tests enabled to determine an actual force acting on the specimen. Conclusions The proposed testing fixture was successfully assessed during the compression and cyclic tension–compression of high-strength thin metal sheets as no buckling was observed. Its advantage lies in adapting to change its length with specimen elongation or shrinkage during a test. The friction force generated from a movement of both parts of the device could be effectively monitored by the special strain gauge system during testing and thus its impact on the stress-strain characteristics could be successfully eliminated.

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Application of Finite Element Analysis in Multiscale Metal Forming Process

Cited by 4 publications

References 23 publications

Numeric Simulation of Part Assembly During Pressing Within Assembly Production Process

Numeric Simulation of Part Assembly During Pressing Within Assembly Production Process

Calculation methodology for geometrical characteristics of the forming tool for rib cold rolling

Compression and Fatigue Testing of High-Strength Thin Metal Sheets by Using an Anti-Buckling Device

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