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Temperature and strain rate dependent large tensile deformation and tensile failure behavior of transparent polyurethane at intermediate strain rates

“…Most of them were compression tests. An early high strain rate split Hopkinson pressure bar (SHPB) test on polyurethane at a single strain rate of 1612 /s was conducted by Sharma et al [13]. Qi and Boyce [6] carried out continuous and multi-step quasi-static compression cyclic loading tests, and discovered strong hysteresis and softening behaviors of polyurethane.…”

Polymer Topology Reinforced Synergistic Interactions among Nanoscale Molecular Clusters for Impact Resistance with Facile Processability and Recoverability

“…Furthermore, compressive waves with higher deformation rate (1800 s −1 ) lead to yield and complete failure of the specimens (Figure S19). The observable flow stress (≈20 MPa), is higher than that of the polyurethanes (≈11 MPa), [19] confirming the strong associations originated from physical synergistic interactions. Elastic moduli are determined to be 1045, 1344, 1507 and 2040 MPa at strain rates of 350, 500, 1000 and 1800 s −1 , respectively, ca.…”

Effect of anthropometry scaling on the response of the piper child scalable human body model subject to pelvic impact

“…The Ouyang's setup consisted in delivering the impact on the pelvis using an impactor with a flat surface covered with Sorbothane® while the opposing side is against a fixed support covered with neoprene foam, as described in (Ouyang et al, 2003). The Ls-Dyna *MAT_VISCOELASTIC law was used to represent their behavior with material parameters from the literature (Al-Rumaih, 2009;Jeong et al, 2000;Sharma, 2002;Sorbothane, 2018, see Appendix 2). The loading conditions were simulated by applying the initial velocity to the impactor of the same mass (3.24 kg) as the one used in the tests (Figure 1c).…”