A Cohesive Element Model for Large-Scale Crash Analyses in LS-DYNA ®
In a recent study the cohesive element model *MAT_240 was evaluated for macroscopic modelling of two different Flow-Drill Screw (FDS) connections in large-scale analyses [1]. The study showed that *MAT_240 does not have sufficient flexibility to describe the macroscopic behaviour of the connections. In particular, the force level and initial stiffness in mixed-mode loadings were severely over-estimated. The lack of flexibility to control the mixed-mode behaviour was also pointed out by Sommer and Maier [2], who investigated self-piercing rivet connections. This paper presents a new cohesive element model for use in LS-DYNA. The model is based on *MAT_240, presented by Marzi, et al. [3], with added flexibility to control the behaviour under mixed-mode loadings.
https://www.dynalook.com/conferences/14th-international-ls-dyna-conference/connections/a-cohesive-element-model-for-large-scale-crash-analyses-in-ls-dyna-r/view
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A Cohesive Element Model for Large-Scale Crash Analyses in LS-DYNA ®
In a recent study the cohesive element model *MAT_240 was evaluated for macroscopic modelling of two different Flow-Drill Screw (FDS) connections in large-scale analyses [1]. The study showed that *MAT_240 does not have sufficient flexibility to describe the macroscopic behaviour of the connections. In particular, the force level and initial stiffness in mixed-mode loadings were severely over-estimated. The lack of flexibility to control the mixed-mode behaviour was also pointed out by Sommer and Maier [2], who investigated self-piercing rivet connections. This paper presents a new cohesive element model for use in LS-DYNA. The model is based on *MAT_240, presented by Marzi, et al. [3], with added flexibility to control the behaviour under mixed-mode loadings.
27-B_Connections_044.pdf
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