Development of a New Self-flaring Rivet Geometry Using Finite Element Method and Design of Experiments

Kraus, Christian; Falk, Tobias; Mauermann, Reinhard; Drossel, Welf‐Guntram

doi:10.1016/j.promfg.2020.04.295

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…It enables, by using of a user-defined anisotropic plasticity model, to evaluate the influence of anisotropic material behaviours on joint characteristics. Since the three-dimensional adaptive remeshing works in case of extreme deformation and subsequent material failure unstably in current commercial solvers, a full or partial three-dimensional model of a joining process, taking into consideration the fact that the material damage is still a challenge [13]. To overcome this difficulty in the simulation, some meshless approximations based on bond-based failure are common.…”

Section: /1mentioning

confidence: 99%

A method for three-dimensional modelling of the shear-clinching process

Han¹,

Yang²,

Meschut³

2021

Esaform 2021

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Three-dimensional modelling enables to determine the in-plane material flow in asymmetrical situation. Thus, the distortion of the sheets to be joined can be characterized more exactly. This study shows a method for building up a three-dimensional shear-clinching framework without damage criteria. In fact, the die-sided sheet in shear-clinching was designed as a pre-punched sheet and slugs. The material separation in the die-sided joining partner, which in two-dimensional simulation is often described by macro- and micromechanical fracture criteria, was realised in this study based on a defined contact condition. By means of a shear-cutting simulation, a correlation between the break angle and the separation stress was determined, which was used as a separation criterion in the shear-clinching simulation. The separation line was confirmed using post-particles. To validate this model, the results of the simulation using a quadratic single-point specimen were compared to the experiments with respect to the distortion of the joining partner. In general, the built three-dimensional framework provides for further tool developments with regard to the reduction of distortion in shear-clinching.

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Section: /1mentioning

confidence: 99%

A method for three-dimensional modelling of the shear-clinching process

Han¹,

Yang²,

Meschut³

2021

Esaform 2021

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“…Contents of this work were e.g. the general improvement of functionality and prognosis accuracy of the process models [2], the numerical development of new rivet geometries [3], the determination of suitable process parameters [4] or the development of new process variants [5].…”

Section: Introductionmentioning

confidence: 99%

Algorithm-based design of mechanical joining processes

Jäckel

Falk

Drossel

2022

Prod. Eng. Res. Devel.

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In this paper, the development of algorithm-based process models for the mechanical joining process self-pierce riveting with semi-tubular rivet (SPR-ST) is described. Therefore, an extensive experimental and numerical database regarding the SPR-ST process and strength of steel and aluminum joints with tensile strengths of the sheets between 200 and 1000 MPa was generated for the building of the models. This process data could then be used for the training and evaluation of different prediction algorithms. Furthermore, the simulation data is applied to predict the entire contour (mesh) of non-simulated joints. This includes the visualization of output values such as strains, stresses and damage for each element and node of the mesh. That approach enables to obtain more information about the joint than just discrete values such as interlock or strength.

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“…The rivet length, rivet shank diameter, rivet material and rivet hardness level are the four important rivet parameters [5][6] [7]. The die type (e.g.…”

Section: Introductionmentioning

confidence: 99%