| 초록 |
Interior parts composed of plastic usually deform under the various temperature conditions. It is necessary to obtain the material properties for thermal deformation analysis under the heat cycle test. Specially, creep data of plastic material was introduced to study the time-dependent deformation behavior of the Instrument Panel in heat cycle test. The time-hardening version of the power-law creep model was applied to account for the permanent deformation after heat cycle test, verified through the comparison of test result with FEA result for simple model. In this study, non-linear finite element method has been introduced to study the deformation behavior of IP in thermal cycle test. The test result has been fitted into a time-hardening type creep constitutive equation. The coefficient of creep equation has been validated with the comparison of test result and FEM simulation result. |
