On the prediction of stress relaxation from known creep of nonlinear materials

Article Abstract:

A technique for computing the nonlinear relaxation behavior from creep experiments of nonlinear viscoelastic materials is shown. Findings indicated that for given nonlinear creep characteristics and creep compliance represented by the Prony series, the Schapery creep model can be converted into a set of first order nonlinear equations. A solution of these equations allows the obtaining of the nonlinear stress relaxation curves.

Viscoelastic materials, Stress relaxation (Materials)

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Bimaterial interfacial crack growth with strain gradient theory

Article Abstract:

Results reveal three factors influencing the direction of crack growth and resistance of the bimaterial system against fracture. Data point out that boundary conditions, stress/strain gradient due to material mismatch, and the distance of the crack to the interface strongly affect the crack growth.

Research, Numerical analysis, Strains and stresses, Materials science, Concrete, Concrete cracking, Boundary value problems

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The mechanical response of random swirl-mat polymeric composite

Article Abstract:

Results show a correlation between stiffness scatter and failure localization in a glass fiber strand swirl-mat polymeric matrix composite. Data point out that prediction of long term mechanical response of the system can be made based on short-term data.

Usage, Polymeric composites, Polymer composites, Injection molding, Mechanical movements, Movements (Mechanisms)

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