TY - JOUR
T1 - Thermoviscoelastic analysis of stress in composite structures-micro-to-structural approach
AU - Shemesh, Liri
AU - Aboudi, Jacob
AU - Eliasi, Rami
AU - Livshits, David
PY - 2014/4
Y1 - 2014/4
N2 - Manufacturing of composite materials is usually accompanied with residual stresses. These stresses should be evaluated and assessed. To this end, a micromechanical model for periodic material whose temperature dependent constituents behave as thermorheologically complex materials (TCM) has been developed. This model, referred as the high fidelity generalized method of cells (HFGMC), takes into account the detailed interaction between the fiber and resin, their volume ratios, the fibers distribution and their waviness. This model is linked, in conjunction with a special UMAT subroutine, to the ABAQUS finite element code for prediction of the response of thermoviscoelastic composite structures during cool down process. The present investigation shows the effect of the cool down rate on the residual stress developed in the composite cylindrical structures.
AB - Manufacturing of composite materials is usually accompanied with residual stresses. These stresses should be evaluated and assessed. To this end, a micromechanical model for periodic material whose temperature dependent constituents behave as thermorheologically complex materials (TCM) has been developed. This model, referred as the high fidelity generalized method of cells (HFGMC), takes into account the detailed interaction between the fiber and resin, their volume ratios, the fibers distribution and their waviness. This model is linked, in conjunction with a special UMAT subroutine, to the ABAQUS finite element code for prediction of the response of thermoviscoelastic composite structures during cool down process. The present investigation shows the effect of the cool down rate on the residual stress developed in the composite cylindrical structures.
KW - Cool down
KW - Epoxy
KW - Finite element method (FEM)
KW - High fidelity generalized method of cells (HFGMC)
KW - Thermorheologically complex materials (TCM)
UR - http://www.scopus.com/inward/record.url?scp=84902580446&partnerID=8YFLogxK
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AN - SCOPUS:84902580446
SN - 1005-1120
VL - 31
SP - 191
EP - 194
JO - Transactions of Nanjing University of Aeronautics and Astronautics
JF - Transactions of Nanjing University of Aeronautics and Astronautics
IS - 2
ER -