Título:
|
Simulating squeeze flows in multiaxial laminates: towards fully 3D mixed formulations
|
Autor/a:
|
Ibáñez, Rubén; Abisset-Chavanne, Emmanuelle; Chinesta, Francisco; Huerta, Antonio
|
Otros autores:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria |
Abstract:
|
The final publication is available at Springer via http://dx.doi.org/10.1007/s12289-016-1309-4 |
Abstract:
|
Thermoplastic composites are widely considered in structural parts. In this paper attention is paid to squeeze flow of continuous fiber laminates. In the case of unidirectional prepregs, the ply constitutive equation is modeled as a transversally isotropic fluid, that must satisfy both the fiber inextensibility as well as the fluid incompressibility. When laminate is squeezed the flow kinematics exhibits a complex dependency along the laminate thickness requiring a detailed velocity description through the thickness. In a former work the solution making use of an in-plane-out-of-plane separated representation within the PGD – Poper Generalized Decomposition – framework was successfully accomplished when both kinematic constraints (inextensibility and incompressibility) were introduced using a penalty formulation for circumventing the LBB constraints. However, such a formulation makes difficult the calculation on fiber tractions and compression forces, the last required in rheological characterizations. In this paper the former penalty formulation is substituted by a mixed formulation that makes use of two Lagrange multipliers, while addressing the LBB stability conditions within the separated representation framework, questions never until now addressed. |
Abstract:
|
Peer Reviewed |
Materia(s):
|
-Àrees temàtiques de la UPC::Física::Física de l'estat sòlid -Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències -Strength of materials -Plastics -Squeeze flow -Composite laminates -Sheet forming -Proper generalized decomposition -Ericksen fluid -Mixed formulation -LBB condition -Resistència de materials -Plastics -Classificació AMS::74 Mechanics of deformable solids::74C Plastic materials, materials of stress-rate and internal-variable type -Classificació AMS::74 Mechanics of deformable solids::74P Optimization |
Derechos:
|
|
Tipo de documento:
|
Artículo - Versión presentada Artículo |
Compartir:
|
|