Some Challenges of the Development of Constitutive Equations of Semicrystalline Polymers for Structural Calculations

Y. Meimon (1)

1 IFPEN - IFP Energies nouvelles

The use of semicrystalline polymers as structural polymers is spreading in the industry. The mechanical behaviour of these polymers is difficult to grasp, highly dependent on time and temperature, and particularly sensitive to chemical ageing, an important point when evaluating the time life of structures. The development of constitutive equations which can describe the evolution of the mechanical memory of semicrystalline polymers and their insertion in a computer code employing the finite element method are preferential means for improving structural design. The quality of these complex computation techniques must be assured by a methodology adapted to the development of constitutive equations of semicrystalline polymers. This methodology may be pictured by the steps of the life cycleof a model: from the design of the model up to the validation on typical structuresrepresenting the structure in operation. These steps are detailed in the paper by using, as an example, a new model of the behaviour of semicrystalline polymers.

Domains: Physics [physics]

Y. Meimon. Some Challenges of the Development of Constitutive Equations of Semicrystalline Polymers for Structural Calculations. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2000, 55 (6), pp.649-659. ⟨10.2516/ogst:2000049⟩. ⟨hal-02054079⟩