Influence of plastic orthotropy on clinching of sheet metal

Friedlein, Johannes

doi:10.21741/9781644902417-17

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Cited by 2 publications

References 12 publications

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Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates

Böhnke,

Bielak,

Bobbert

et al. 2023

Lecture Notes in Mechanical Engineering

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Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates

Böhnke,

Bielak,

Bobbert

et al. 2023

Lecture Notes in Mechanical Engineering

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Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining

Friedlein,

Böhnke,

Schlichter

et al. 2024

JMMP

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Similar to bulk metal forming, clinch joining is characterised by large plastic deformations and a variety of different 3D stress states, including severe compression. However, inherent to plastic forming is the nucleation and growth of defects, whose detrimental effects on the material behaviour can be described by continuum damage models and eventually lead to material failure. As the damage evolution strongly depends on the stress state, a stress-state-dependent model is utilised to correctly track the accumulation. To formulate and parameterise this model, besides classical experiments, so-called modified punch tests are also integrated herein to enhance the calibration of the failure model by capturing a larger range of stress states and metal-forming-specific loading conditions. Moreover, when highly ductile materials are considered, such as the dual-phase steel HCT590X and the aluminium alloy EN AW-6014 T4 investigated here, strong necking and localisation might occur prior to fracture. This can alter the stress state and affect the actual strain at failure. This influence is captured by coupling plasticity and damage to incorporate the damage-induced softening effect. Its relative importance is shown by conducting inverse parameter identifications to determine damage and failure parameters for both mentioned ductile metals based on up to 12 different experiments.

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Influence of plastic orthotropy on clinching of sheet metal

Cited by 2 publications

References 12 publications

Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates

Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates

Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining

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