TY - GEN
T1 - Stochastic Modal Damping Analysis of Stiffened Laminated Composite Plate
AU - Chandra, Sourav
AU - Sepahvand, Kheirollah
AU - Matsagar, Vasant
AU - Marburg, Steffen
N1 - Publisher Copyright:
© 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2021
Y1 - 2021
N2 - Laminate composite plates have several significant applications in aerospace and automobile industries due to their high strength-to-weight ratio, thermal stability, etc. However, thin laminated composite plate has a tendency of buckling when subjected to some adverse loading conditions. The addition of stiffener can avoid the buckling tendency of the thin laminated composite plate. The effect of stiffener on natural frequency and random modal damping are studied herein. The effect of uncertainty in modal damping is accounted while analyzing the composite plate to evaluate the uncertainty in damped dynamic response of the stiffened composite plate. The modal damping of the composite is determined using visco-elastic damping (VED) model. The randomness in the modal damping is propagated from uncertainty in loss factor of the lamina, and stochastic finite element method (SFEM) based on generalized polynomial chaos (gPC) is applied to evaluate the uncertainty in the modal damping of the stiffened laminated composite plate. First-order shear deformation theory (FSDT), including rotary inertia, is adapted to develop collocation-based stochastic finite element formulation of the composite plate with stiffener. Addition of the stiffener increases the frequency of the composite structure. Uncertainty in the modal damping due to the varying layers of the plates and stiffener directions have been investigated.
AB - Laminate composite plates have several significant applications in aerospace and automobile industries due to their high strength-to-weight ratio, thermal stability, etc. However, thin laminated composite plate has a tendency of buckling when subjected to some adverse loading conditions. The addition of stiffener can avoid the buckling tendency of the thin laminated composite plate. The effect of stiffener on natural frequency and random modal damping are studied herein. The effect of uncertainty in modal damping is accounted while analyzing the composite plate to evaluate the uncertainty in damped dynamic response of the stiffened composite plate. The modal damping of the composite is determined using visco-elastic damping (VED) model. The randomness in the modal damping is propagated from uncertainty in loss factor of the lamina, and stochastic finite element method (SFEM) based on generalized polynomial chaos (gPC) is applied to evaluate the uncertainty in the modal damping of the stiffened laminated composite plate. First-order shear deformation theory (FSDT), including rotary inertia, is adapted to develop collocation-based stochastic finite element formulation of the composite plate with stiffener. Addition of the stiffener increases the frequency of the composite structure. Uncertainty in the modal damping due to the varying layers of the plates and stiffener directions have been investigated.
KW - Generalized polynomial chaos (gPC)
KW - Modal damping
KW - Stiffened laminated composite plate
KW - Visco-elastic damping (VED)
UR - http://www.scopus.com/inward/record.url?scp=85097643832&partnerID=8YFLogxK
U2 - 10.1007/978-981-15-8138-0_49
DO - 10.1007/978-981-15-8138-0_49
M3 - Conference contribution
AN - SCOPUS:85097643832
SN - 9789811581373
T3 - Lecture Notes in Civil Engineering
SP - 635
EP - 650
BT - Recent Advances in Computational Mechanics and Simulations - Volume-I
A2 - Saha, Sandip Kumar
A2 - Mukherjee, Mousumi
PB - Springer Science and Business Media Deutschland GmbH
T2 - 7th International Congress on Computational Mechanics and Simulation, 2019
Y2 - 11 December 2019 through 13 December 2019
ER -