0000000000297104
AUTHOR
M O Popp
Crimping Profile Optimization on the Air Spring Using Finite Element Method
Abstract Due to the fact that the requirements of the industry aim to improve the dynamics, the safety and the comfort during the use of the vehicles, it is recommended to use the finite element method for component quality optimization. The purpose of this paper is to provide an overview of the current state of analysis through the finite element method of the crimping process used to assemble air springs produced in the automotive industry. Starting from the prototype of an air spring, the researches are focused on the study of the assembly of the piston with the bellow and the crimping ring through the crimping process. After analysis with the finite element method and static tests, impr…
Numerical Study of a Process Strategy for Improving Geometrical Accuracy in Incremental Forming Process
Abstract Incremental forming process is a relatively new process among researchers, which is yet to be implemented in automotive and aerospace industries. The researchers are studying various process strategies and methods to improve the geometrical accuracy of the parts obtained by incremental forming, because the geometry of the parts is one of the key factors holding back the process industrialization. One good method to investigate the benefits of a process strategy is by means of numerical analysis, from which the results obtained can confirm or disprove the gains of the researched strategy. The aim of this paper is to present the advantages of using a fluid under pressure as a support…
Comparison between aluminum alloys behavior in incremental sheet metal forming process of frustum pyramid shaped parts
Abstract Single point incremental forming is a new emerging technology, used mainly for prototype development or small series production, with good prospects in industrial implementation. However, the parts manufactured through this process often presents low accuracy, thus the industrial implementation is yet limited. Incremental forming process can be done with the help of different technological equipment, such as industrial robots and numerically controlled machines. Since the process is still in development phase, it is a good practice to use finite element analysis software packages in order to reduce time and costs to produce accurate parts. The aim of this paper is to investigate th…
Numerical simulation of material failure in single point incremental forming process
Abstract The sheet metal parts obtained through single point incremental forming process show a thinning and also there is a high possibility of material failure. In order to avoid the failure of the material during the process, it is a good practice to use numerical simulation through finite element method to prevent this phenomenon. The aim of this paper is to investigate the prediction of the failure moment of the aluminium sheet metal using various failure criteria. Commonly used failure criteria are: Tresca or maximum shear stress criterion, von Mises yield criterion, Hill yield criteria and various invariants of the Cauchy stress tensor. For the numerical simulation of the single poin…
Robot-based incremental sheet forming – the tool path planning
Abstract To achieve a 3D shape with certain degree of complexity from metal sheets that are flat in the beginning, especially for prototype development or small series production, that is also cost efficient by avoiding high-end dies or expensive tooling, the incremental sheet forming process can represent the ideal choice due to its flexibility, reduced forming forces and increased formability. The process is performed with a round tool that follows a predefined path to deform the flat metal sheet into its final shape. The proper selection of the toolpaths affects the productivity and the accuracy of each part. The process having to focus on forming each single point in increments. For cos…