Analysis and modeling of simulated residual stress of mold injected plastic parts by using robust correlations

Materia

Posada, Juan¹  Vargas, Carlos¹  Sierra, Juan¹  Botero-Cadavid, Juan F.² 

[1] Instituto tecnológico metropolitano, Medellín, Colombia;Universidad nacional de Colombia, Medellín, Colombia

关键词: Residual stresses;    injection molding;    robust multivariable regression;    simulation;    design of experiments.;   

DOI  :  10.1590/s1517-707620170004.0228

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

The injection molding process is the most widely used processing technique for polymers. The analysis of residual stresses generated during this process is crucial for the part quality assessment. The present study evaluates the residual stresses in a tensile strength specimen using the simulation software Moldex3D for two polymers, polypropylene and polycarbonate. The residual stresses obtained under a simulated design of experiment were modeled using a robust multivariable regression technique. The results shown that residual stresses could be successfully modeled with a quadratic polynomial fit. For both materials, the lowest level of residual stresses was found at the highest mold temperature and the lowest melting temperature.

【 授权许可】

CC BY