Computational Modeling and Simulation of Spherical Shell Structure Construction using Moldless Hydro-Plastic Forming
Abstract
- Herein, the purpose of this study was to use the perspective of computational mechanics to clarify the effects of differences in the mechanical properties of welding joints, which are used as an initial process in mold-less spherical container molding, on the final molded shape. We scrutinized how factors such as the quantity and placement of explosive charges, alongside the mechanical properties of the joints, influence the final spherical shape. Our results confirm that the pressure generated from 2,4,6-trinitrotoluene (TNT) propagates through water as a shock wave, eventually reaching stainless steel (SUS304) and inducing deformation. Through computational analysis, we derived the following insights:A TNT explosive dosage of 10 g proves optimal for the model.
- Depending on the position of the explosive charge, convex deformation occurs, with the degree of convexity increasing with the position of the explosive charge.
- Material heterogeneity stemming from welding joints results in the generation of low pressure.
As a culmination of this computational investigation, we were able to investigate moldless hydro plastic processing, offering valuable insights from a mechanics viewpoint.
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