In this study, a viscoplastic FEM simulation of the stretch blow molding process is presented. The material's behavior at elevated temperature is assumed to be strain-rate-dependent, and a non-Newtonian creeping material model is employed to specify the strain-rate-sensitive characteristic of the ma
Contact search strategies for FEM simulation of the blow molding process
โ Scribed by Song Wang; Akitake Makinouchi
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 545 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0029-5981
No coin nor oath required. For personal study only.
โฆ Synopsis
In this paper, the e$ciency and accuracy of contact search algorithms for the blow molding simulation were discussed. In order to increase the e$ciency of the contact search, we proposed and implemented three kinds of global search algorithms and compared them with two existing methods in terms of both formulation and CPU time. The proposed sorted moving box method was "nally proved to be the most e$cient one, without loss of stability. To increase the accuracy, a contact}tolerance}adjustable local search algorithm was also proposed. Successful simulation of the stretch blow molding process was given as an example.
๐ SIMILAR VOLUMES
Simulations of various stretch blow and blow moldings of axisymmetric PET bottles has been carried out using ABAQUS. A creep constitutive model with material data developed for a thermoforming process was used in the finite element analysis. Simulations using shell and solid elements were compared w