For the design of a polymer liner in a high-pressure vessel, experimental and numerical analyses of highdensity
polyethylene (HDPE) are conducted under tensile and compressive loads. The effect of temperature
on the mechanical behavior of the HDPE is investigated experimentally in a range of 223K to 373K.
For tensile and compression tests, specimens are cut out of a prototype polymer liner, which is to be
developed for automobile high-pressure hydrogen tanks. The specimens include manufacturing influences
of the future used liner. Investigating the effect of temperature numerically in a finite element
analysis, two different material models are taken into consideration to represent the thermo-mechanical
behavior of the HDPE: an elastic-plastic material model with isotropic hardening and a hyperelastic
material model. The results of the finite element analyses are compared with the experimental results in
the entire temperature range. Temperature-dependent impacts of the tension-compression asymmetry
are quantified experimentally and numerically for the mechanical behavior of polyethylene.
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For the design of a polymer liner in a high-pressure vessel, experimental and numerical analyses of highdensity
polyethylene (HDPE) are conducted under tensile and compressive loads. The effect of temperature
on the mechanical behavior of the HDPE is investigated experimentally in a range of 223K to 373K.
For tensile and compression tests, specimens are cut out of a prototype polymer liner, which is to be
developed for automobile high-pressure hydrogen tanks. The specimens include manufactur...
»