A constitutive model for commercially pure titanium

Article Abstract:

An empirical constitutive model for the stress analysis of commercially pure (CP) titanium has been developed using data obtained from torsion tests on an extruded rod specimen. The model was employed to determine the flow stress behavior of CP titanium at a temperature range between ambient and 750 degrees centigrade and at shear-strain rates of 0.92 to 122.0 s raised to the negative one. Results indicate that the proposed heat conduction model is capable of values identical to those obtained experimentally.

Models, Stress analysis (Engineering), Strength of materials, Strength (Materials), Titanium

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Constitutive modeling of a thermoplastic olefin over a broad range of strain rates

Article Abstract:

A three-dimensional constitutive model is developed for Thermoplastic Olefin (TPO) based upon the analytical and mechanical investigation. This model includes a quantitative strain rate dependent Young's modulus, two different yield mechanisms for low and high strain rates, respectively, temperature dependent strain hardening, permanent flow from crystallographic slip in the ordered phase of TPO matrix, and adiabatic heating.

Thermoplastic composites, Olefins, Alkenes, Mechanical properties, Elasticity, Elasticity (Mechanics)

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Constitutive modeling and material characterization of polymeric foams

Article Abstract:

Investigations into the mechanical properties of polypropylene, polystyrene and polyurethane, polymeric foams, concentrated on strain rate and temperature effects under large deformations. A phenomenological hydrodynamic elastoplastic constitutive technique was used to develope a model for the polymeric foams.

Polymeric composites, Polymer composites

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