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Direct Assembly on Polymer: Investigation of the Clamp Load by Experiment and Simulation

To obtain a detachable polymermaterial component, direct assembly using selftapping screws can be seen as the joining technique with low costs. However, the typical behaviors of plastic material are dependent on the time and temperature, this leads to a significant decrease of the clamp load, and the other influence is the different thermal expansion coefficient between plastic and metal. The aim of this work is to investigate, the influence of time and temperature on the clamp load of a direct assembly with self-tapping screw by using experiment and FE-Simulation. The boss, which exhibits in homogeneity and anisotropy due to the fibre orientation, was investigated with a high spatial resolution to optain the local material parameters for FE-Analysis. The results of the FEA of the Joining were validated by experimental for the clamp load changes as well as the surface deformation of the boss. It is clearly observed, that the relaxation of the clamp load of the joining will mainly be occurring in counterbore to a certain assembly depth.

Lesen Sie die deutsche Zusammenfassung auf Kunststoffe.de
Author
 Yuan Yao

Yuan Yao
Lehrstuhl für Ressourcengerechte ProduktEntwicklung RPE
Technische Universität Kaiserslautern

Information

Free keywords: Direct assembly, self-tapping screw, optical strain measurement, thermal stress, clamp load, material parameter, FE-Analysis
Institute / chair: Fachbereich Maschinenbau und Verfahrenstechnik der Technischen Universität Kaiserslautern
Language: German
Technical consultant for expert services: Prof. Dr.-Ing. Alois K. Schlarb, Prof. Dr.-Ing. Dr. h.c. G. W. Ehrenstein, PD Dr.-Ing. Ralph J. Hellmig, Prof. Dr.-Ing. Rainer Renz (Betreuer)
Publication year: 2011
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

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