mohsen malmorad - Academia.edu (original) (raw)
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Papers by mohsen malmorad
Mechanics of Materials
Abstract The flexural behavior of hybrid composite rods used in high capacity low sag overhead co... more Abstract The flexural behavior of hybrid composite rods used in high capacity low sag overhead conductors at elevated temperatures is experimentally investigated. Dynamic mechanical analysis (DMA) is carried out on pultruded carbon/glass/epoxy specimens, followed by three-point bending experiments at different elevated temperatures. The failure mechanisms are examined by using macro/micro images taken from the failed specimens. The results show that flexural properties such as strength and modulus decrease as temperature increases. The failure mode of hybrid composite rods is also found highly temperature-dependent. A new simple model is developed based on DMA data to predict the flexural strength of high-performance polymeric composites at different temperatures. The predictions are in good agreement with the experimental data.
Journal of Mechanics, 2013
In this research, thermal buckling analysis of circular functionally graded plates with Actuator/... more In this research, thermal buckling analysis of circular functionally graded plates with Actuator/Actuator piezoelectric layers (FGPs) is studied based on neutral plane, classical and first order shear deformation plate theories. Mechanical properties of the plate are considered as those of Reddy Model. Plate is assumed to be under thermal loading. Nonlinear temperature rises through the thickness and boundary conditions are considered clamped. Equilibrium and stability equations have been derived using calculus of variations and application of Euler equations. Finally, critical buckling temperature changes are studied based on the mentioned theories for a sample plate. An appropriate agreement is seen among the present results and the results of other researches.
Mechanics of Materials
Abstract The flexural behavior of hybrid composite rods used in high capacity low sag overhead co... more Abstract The flexural behavior of hybrid composite rods used in high capacity low sag overhead conductors at elevated temperatures is experimentally investigated. Dynamic mechanical analysis (DMA) is carried out on pultruded carbon/glass/epoxy specimens, followed by three-point bending experiments at different elevated temperatures. The failure mechanisms are examined by using macro/micro images taken from the failed specimens. The results show that flexural properties such as strength and modulus decrease as temperature increases. The failure mode of hybrid composite rods is also found highly temperature-dependent. A new simple model is developed based on DMA data to predict the flexural strength of high-performance polymeric composites at different temperatures. The predictions are in good agreement with the experimental data.
Journal of Mechanics, 2013
In this research, thermal buckling analysis of circular functionally graded plates with Actuator/... more In this research, thermal buckling analysis of circular functionally graded plates with Actuator/Actuator piezoelectric layers (FGPs) is studied based on neutral plane, classical and first order shear deformation plate theories. Mechanical properties of the plate are considered as those of Reddy Model. Plate is assumed to be under thermal loading. Nonlinear temperature rises through the thickness and boundary conditions are considered clamped. Equilibrium and stability equations have been derived using calculus of variations and application of Euler equations. Finally, critical buckling temperature changes are studied based on the mentioned theories for a sample plate. An appropriate agreement is seen among the present results and the results of other researches.