High rate and temperature-dependent tensile characterisation with modelling for gap-bridged remote laser welded (RLW) joint using automotive AA5182 alloy

Das, Abhishek; Beaumont, Richard Adrian; Butterworth, Ian; Masters, Iain; Williams, David

doi:10.1016/j.ijimpeng.2020.103672

Cited by 3 publications

(1 citation statement)

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“…They developed a substitute model of the weld where a simplified FE model was composed of the upper and lower flanges (modelled with shell elements) and solid weld element between the flanges. A similar approach was adopted by Chauffray et al [25] and Arif [26] where the weld was modelled as solid brick elements placed within the coarse shell elements of the body-in-white sheet materials [27]. Utilising this macro-modelling approach, the strength of laser welds on car seats and subsequent failure prediction were obtained.…”

Section: Introductionmentioning

confidence: 99%

Macro-Modelling of Laser Micro-Joints for Understanding Joint Strength in Electric Vehicle Battery Interconnects

et al. 2021

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Laser micro-welding is increasingly being used to produce electrically conductive joints within a battery module of an automotive battery pack. To understand the joint strength of these laser welds at an early design stage, micro-joints are required to be modelled. Additionally, structural modelling of the battery module along with the electrical interconnects is important for understanding the crash safety of electric vehicles. Fusion zone based micro-modelling of laser welding is not a suitable approach for structural modelling due to the computational inefficiency and the difficulty of integrating with the module model. Instead, a macro-model which computationally efficient and easy to integrate with the structural model can be useful to replicate the behaviour of the laser weld. A macro-modelling approach was adopted in this paper to model the mechanical behaviour of laser micro-weld. The simulations were based on 5 mm diameter circular laser weld and developed from the experimental data for both the lap shear and T-peel tests. This modelling approach was extended to obtain the joint strengths for 3 mm diameter circular seams, 5 mm and 10 mm linear seams. The predicted load–displacement curves showed a close agreement with the test data.

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Section: Introductionmentioning

confidence: 99%