Analise numerica e experimental do cravamento de componentes mecanicos tubulares em haste com ponta esferica / Numerical and experimental analysis of tubular metallic parts indented with spherical punchs

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Crimping is a cold metal forming process that presents low costs for use in holding tubular components. The type of crimping analyzed is used in projects of components that transmit rotating motion, such as joining systems of brake pedals. If the joining clearance, in this case, is less than 0,02mm the brake movement will be restrained and may not close the vacuum valve of the break system what could cause reduction of efficiency; however, if that clearance is greater than 0,15mm may cause excessive noisy. Another problem is the presence of cracks or fissures generated by the choice of inappropriate process parameters. These parameters are not usually specified in the product design leading to high process variability. This work presents six factors that were chosen to start the analysis: punch geometry, roughness of the punch, diameter of the rod end, thickness of the tubular component, indentation depth, and position of indentation load. The crimping manufacturing process was simulated experimentally through the fixture specially projected and built to this work and compared with the results obtained with the software MSC Superforge 2005

ASSUNTO(S)

steel creep of metals planejamento experimental statistical analysis metais - deformação aço - fratura fracture of metals metais - fratura

ACESSO AO ARTIGO

Documentos Relacionados