RT info:eu-repo/semantics/article
T1 Yield stress distribution in injection-mouldedglassy polymers
A1 Verbeeten, Wilco M.H.
A1 Kanters, Marc J.W.
A1 Engels, Tom A.P.
A1 Govaert, Leon E.
K1 mechanical properties
K1 modelling
K1 polycarbonate
K1 aging
K1 creep
K1 Resistencia de materiales
K1 Strength of materials
K1 Ensayos (Tecnología)
K1 Testing
AB A methodology for structural analysis simulations is presented that incorporates the distribution of mechanical propertiesalong the geometrical dimensions of injection-moulded amorphous polymer products. It is based on a previously developedmodelling approach, where the thermomechanical history experienced during processing was used to determine the yield stressat the end of an injection-moulding cycle. Comparison between experimental data and simulation results showed an excellentquantitative agreement, both for short-term tensile tests as well as long-term creep experiments over a range of strain rates,applied stresses, and testing temperatures. Changes in mould temperature and component wall thickness, which directly affectthe cooling profiles and, hence, the mechanical properties, were well captured by the methodology presented. Furthermore, itturns out that the distribution of the yield stress along a tensile bar is one of the triggers for the onset of the (strong) localizationgenerally observed in experiments.
PB Wiley-VCH Verlag
SN 1097-0126
YR 2015
FD 2015-11
LK http://hdl.handle.net/10259/4506
UL http://hdl.handle.net/10259/4506
LA eng
NO Spanish Government (Ministry of Sci-ence and Innovation, Ministry of Economy and Competitiveness)through grant numbers RYC-2010-07171 and DPI2011-25470
DS Repositorio Institucional de la Universidad de Burgos
RD 21-nov-2024