Abstract
The mechanical properties of polyvinyl chloride (PVC) elastomers under dynamic loading restrict the service life of PVC products, affecting the product life cycle cost. In order to elucidate the dynamic mechanical properties of PVC elastomers, quasi-static compression tests are conducted at three different strain rates (0.001 s−1, 0.01 s−1, and 0.1 s−1), along with compression relaxation tests at a strain of 0.35. Dynamic compression experiments are also conducted using a split Hopkinson pressure bar experimental device at three different strain rates (1510 s−1, 2260 s−1, and 3000 s−1). Then, a visco-hyperelastic constitutive model consisting of a Yeoh hyperelastic model and rate-dependent viscoelastic model is built based on the experimental data. The order of the relaxation function for the viscoelastic part is determined from the experimental relaxation data, while the model parameters are determined from the experimental quasi-static and dynamic compression data. The results revealed that the PVC elastomer is sensitive to the strain rate, showing obvious visco-hyperelastic behavior. The proposed model accurately describes the mechanical behavior of the PVC elastomer under dynamic loading. This model is expected to provide basic information to support the development and application of PVC elastomer materials.
Highlights
Polyvinyl chloride (PVC) is a thermoplastic synthetic polymer1 that is widely used in automotive,2,3 marine,4 and aerospace5 industries because of its low cost, low density, and corrosion resistance
For these applications, clarifying the dynamic mechanical properties of the material and establishing an accurate constitutive model are highly significant for prolonging the service life of PVC products and reducing their life cycle cost
The results of the compression relaxation test and dynamic compression test separately indicated that the material had viscoelasticity and sensitivity to the strain rate at high strain rates
Summary
Polyvinyl chloride (PVC) is a thermoplastic synthetic polymer that is widely used in automotive, marine, and aerospace industries because of its low cost, low density, and corrosion resistance. The PVC elastomer has been shown to be an excellent material for simulating biological tissue in various complex situations, such as simulating the damage to a human body in accident scenarios (for example, car crashes or explosions) and investigating the environmental adaptability of mobile robots, both of which involve very high strain rates during loading. For these applications, clarifying the dynamic mechanical properties of the material and establishing an accurate constitutive model are highly significant for prolonging the service life of PVC products and reducing their life cycle cost. In recent years, many visco-hyperelastic constitutive models have been developed to describe the mechanical response of elastomers under dynamic loading. These models, which involve clear methods for determining the hyperelastic behavior, have been experimentally verified. the stress–strain response of the elastomer scitation.org/journal/adv during dynamic loading has strongly nonlinear viscoelastic characteristics, i.e., time dependence, and there are currently many limitations on the determination of the viscoelastic part of the response (for example, the lack of valid relaxation function)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
