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Simulation of Reversible Plasticity Shape Memory Polymer with Designed Strain Rate Dependent Failure Model

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Abstract

Shape memory polymer (SMP) has been intensely studied for various industrial applications, such as biomedical and aerospace field due to its unique thermomechanical behavior (i.e., shape recovery). However, the researches of reversible plasticity shape memory (RPSM) polymers are insufficient. Here, we investigated the thermomechanical behavior of polyurethane-based shape memory polymer under glass transition temperature. We analyzed effect of strain rate on yield stress and elongation to take into account the application range of the RPSM polymers and made RPSM polymer material model which depends on strain rates by using numerical simulation. To confirm the application range of the RPSM polymers, we applied this material model to automobile bumper and analyzed the possibility of using the RPSM polymers to automobile bumpers through low-speed collision simulation. It was confirmed that the failure strain of the RPSM polymers based bumpers was ten times higher than that of conventional bumpers. It was expected that the application field of the RPSM polymers will be expanded by applying the strain rate dependent RPSM polymer model to various fields.

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Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C2010986). This work has also been supported by the C1 Gas Refinery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (No. 2018M3D3A1A01055759).

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Authors and Affiliations

  1. Department of Mechanical Engineering, Sogang University, Seoul, 04107, Republic of Korea

    Youngwan Kim, Youngwook Lim & Dongchoul Kim

  2. Hyundai Motor Group, Seoul, Gyeonggi, 18280, Republic of Korea

    Dong Eun Cha

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  1. Youngwan Kim
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  2. Youngwook Lim
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Correspondence to Dongchoul Kim.

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Kim, Y., Lim, Y., Cha, D.E. et al. Simulation of Reversible Plasticity Shape Memory Polymer with Designed Strain Rate Dependent Failure Model. Multiscale Sci. Eng. 3, 88–94 (2021). https://doi.org/10.1007/s42493-021-00061-w

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  • DOI: https://doi.org/10.1007/s42493-021-00061-w

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