Abstract
The deformation of plastics during production and service means that retired parts often possess different mechanical states, and this can directly affect not only the properties of remanufactured mechanical parts, but also the design of the remanufacturing process itself. In this paper, we describe the stress-strain relationship for remanufacturing, in particular the cyclic deformation of parts, by using the particle swarm optimization (PSO) method to acquire the Yoshida-Uemori (Y-U) hardening model parameters. To achieve this, tension-compression experimental data of AA7075-O, standard PSO, oscillating second-order PSO (OS-PSO) and variable weight PSO (VW-PSO) were acquired separately. The influence of particle numbers on the inverse analysis efficiency was studied based on standard PSO. Comparing the results of PSO variations showed that: (1) standard PSO is able to avoid local solutions and obtain Y-U model parameters to the same degree of precision as the OS-PSO; (2) by adjusting section weight, the VW-PSO could improve local fitting accuracy and adapt to asymmetric deformation; (3) by reducing particle numbers to a certain extent, the efficiency of analysis can be improved while also maintaining accuracy.
Highlights
Remanufacturing is the process of transforming retired products back to their original state and restoring their performance
The graphical section and the particle swarm optimization (PSO) section were combined to improve the accuracy of identifying parameters and the efficiency of the Y-U hardening model, a model that is suitable for the remanufacturing process
This study focused on three aspects: PSO variation, particle number and fitness function
Summary
Remanufacturing is the process of transforming retired products back to their original state and restoring their performance. Throughout the process of plastic deformation, which occurs both during production and service, the material properties of parts are changed, including their elastic modulus, yield stress, flow stress, formability, etc. This results in complex material conditions that have the potential to affect the design of remanufacturing processes and determine the mechanical properties of remanufactured parts. Supposing that the retired parts are reformed to their original shapes, this involves a cyclical deformation with symmetrical plastic strain. If the retired parts are reformed into other shapes, the plastic strain is an asymmetric cycle. Research on material deformation behaviors is necessary to aid the design of the remanufacturing process
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
