
Abstract In this paper, loading rate dependence of stress–strain response and ratcheting behavior under compression for PTFE were studied. The effects of loading rate, mean stress and stress amplitude on the ratcheting behavior of PTFE are discussed. It is shown that PTFE is a rate dependent material, but it is insensitive to loading rate when the rate is higher than 40 N/s. Ratcheting strain increases as the loading rate decreased. When loading rate is higher than 40 N/s, there is little effect of loading rate on ratcheting strain rate. At the same stress amplitude (mean stress), the ratcheting strain and ratcheting strain rate increase as mean stress (stress amplitude) increased.
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