Sökning: "linear viscoelasticity"
Visar resultat 11 - 15 av 27 avhandlingar innehållade orden linear viscoelasticity.
11. Creep aspects of softwood from the cell-wall level to structures
Sammanfattning : This thesis addresses the intricate mechanical behaviour of natural materials, with a particular focus on wood. Despite millennia of use, understanding the mechanical behaviour of wood materials remains challenging due to their complex microstructures. LÄS MER
12. Non-linear behavior of bio-based composite : characterization and modeling
Sammanfattning : The development and application of bio-based composite materials have been frequently studied. Most of the work is done on quasi-static performance of these materials. However, these composites are highly non-linear therefore there is need for investigation of their viscelastic and viscoplastic behavior. LÄS MER
13. The Continuous Galerkin Method for Fractional Order Viscoelasticity
Sammanfattning : We consider a fractional order integro-differential equation with a weakly singular convolution kernel. The equation with homogeneous Dirichlet boundary conditions is reformulated as an abstract Cauchy problem, and well-posedness is verified in the context of linear semigroup theory. LÄS MER
14. Anisotropy and non-linear effects in SMC composites : from material data to FE-simulation of structures
Sammanfattning : In the design of composite structures for the automotive industry it is vital to have good tools because development time is very critical. Normally simulation of mechanical properties of sheet moulding compound (SMC) composite structures is stiffness based and limited to isotropic material model. LÄS MER
15. Non-linear behaviour of polymer composites, moisture effects and accelerated testing
Sammanfattning : The society of today is moving fast and the demands on almost everything are getting higher and higher. This can also be seen in the field of material science, where lightweight, high performance materials are gaining increased interest in order to be able to develop for example high performing vehicles with low fuel consumption or wind turbines with higher efficiency. LÄS MER