Incorporation of a Simplified Mechanical Joint Model into Numerical Analysis

Mitja Glavan,Domen Šeruga,Jernej Klemenc,Vili Malnarič

doi:10.5545/sv-jme.2021.7329

Mitja Glavan, Domen Šeruga + Show 2 more

Open Access

https://doi.org/10.5545/sv-jme.2021.7329

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Abstract

In the development of new joining technologies, incorporation of mechanical joints in computer analyses for the evaluation of structures can be carried out by a practical, simplified mechanical joint model. Here, two most frequently used joining technologies were analysed, a self-piercing rivet joint and a clinch joint. Physical tests of static load capacity of the joints were performed and numerical models for simulations were set-up. An optimization method was designed for estimating the material parameters of the mechanical joint for the needs of numerical analyses. For optimization purposes during the plan of experiments, a range of possible parameter values was investigated using a response surface method, results of simulations, results of physical tests and a genetic algorithm. The results of simulations using the optimal values of the material parameters are comparable to the experimental observations for the both joints.

Highlights

The current trend in the automotive, aerospace, nautical and other similar industries is primarily a decrease in material consumption and indirectly a reduction in the mass of these means of transportation
Today, the so-called lightweight materials such as high-strength steel, aluminium, composite materials and the use of magnesium are increasingly emerging as construction materials [1] to [3]
One of the results of the clinch joint measurements for the shear load case was later excluded as that specific measurement deviated incomparably from the other measurements

Summary

Introduction

The current trend in the automotive, aerospace, nautical and other similar industries is primarily a decrease in material consumption and indirectly a reduction in the mass of these means of transportation. In this respect, today, the so-called lightweight materials such as high-strength steel, aluminium, composite materials and the use of magnesium are increasingly emerging as construction materials [1] to [3]. Two joining technologies have been compared in our research, which possess the appropriate characteristics to represent an alternative to spot-welding. Knowing the exact parameters of joints contributes to reducing development costs, shorter development time and optimization of geometry before the first prototype is manufactured [18]

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Results

Discussion

Conclusion