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Experimental study and finite element modeling of tensile deformation in polymer shells

Experimental study and finite element modeling of tensile deformation in polymer shells

Abstract

Contemporary production of polymer shells for liquids involves advanced technological solutions, ensuring high quality and adequate mechanical properties for applications in the food and chemical industries. However, current trends aim to reduce shell weight while improving their mechanical characteristics through optimized geometric parameters. Consequently, there is a growing need for modelling new types of shells and their designs, taking into account material distribution during shell formation and its impact on mechanical properties. When designing polyethylene terephthalate (PET) polymer shells, it is impractical to rely solely on previous development experience to create new product types. To verify product compliance with the required specifications, prototypes (physical samples of moleds) are manufactured, followed by the production of experimental shell samples and their subsequent testing, laboratory research, potential optimization of designs, and documentation changes, which is a time-consuming, costly, and lengthy process. Experimental studies were conducted to obtain real-world characteristics of the distribution of polymeric material (polyethylene terephthalate) during the pneumatic forming of shells. This enables a departure from the idealized distribution of polymeric material during mathematical modelling of the stretching process and optimizes the design process of polymer shells. Finite element modelling of the stretching of polymer shells under internal pressure was performed, and the experimental results were compared with the simulation results. This work presents an experimental study and mathematical modelling of the stretching process of polyethylene terephthalate polymer shells under internal pressure. The research was conducted at the research and production base of LLC "PET Technologies". The influence of the material distribution of polymer shells on resistance to internal pressure was investigated. The process of destruction of polymer shells under internal pressure was experimentally studied and demonstrated, and computer simulation of the process was carried out.

Технології сучасного виробництва полімерних оболонок для рідин мають прогресивний характер, що дає можливість гарантувати високу якість, міцність, екологічність та підвищення механічних характеристик полімерних оболонок для рідин, що є важливим не тільки для харчової, але також хімічної промисловості. Однак є потреба в моделюванні нових типів і конструкцій оболонок, врахування розподілу матеріалу під час формування оболонок та влив цього на механічні характеристики. Метою роботи є проведення моделювання розтягу полімерних оболонок з поліетилентерефталата під дією внутрішнього тиску та оптимізація процесу проєктування полімерних оболонок. У роботі досліджено вплив розподілу матеріалу полімерних оболонок на опір внутрішньому тиску, експериментально досліджено процес руйнування полімерних оболонок під дією внутрішнього тиску та проведено комп’ютерне моделювання процесу. Дослідження проводилися на дослідно-виробничій базі ТОВ “ПЕТ Технолоджиз”.

Keywords

полімерна оболонка; поліетилентерефталат; моделювання; механічні характеристики; розтяг, polymer shell; polyethylene terephthalate; modelling; mechanical properties; tensile deformation

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold