The concentric face gear split-torque transmission system (CFGSTTS) has the advantages of a large reduction ratio and high power density. CFGSTTS considerable potential to be applied in helicopter main reducers. As such, this study, we analyzed load distribution characteristics dual input–dual output system. A load-dependent time-varying meshing stiffness surrogate model was designed based on f...

an aircraft wing needs to display different mechanical behavior in different directions. 1- stiffness in the spanwise (transverse to the corrugation) direction which enables the aerodynamic and inertial loads to be carried. 2- compliance in the chordwise (corrugation) direction which would allow shape changes and increases in surface area; whereas a corrugated sheet due to their special geometr...

in many flood control projects, watershed management and water resources development, calculation of the river flow discharge is of the paramount importance which requires a comprehensive hydrological modeling of the region of interest. in this respect, lack of the existence of hydrometric and meteorology measuring stations in most of watersheds, has caused numerous problems in development and ...

Abstract Aim of this work is to discuss and verify the ability of a lumped kinetic model of methyl-esters to simulate the oxidation and pyrolysis of mixtures of these components with alcohol fuels. The comparisons between recent experimental data and model predictions further confirm the validity of the kinetic model and the promising perspective of the lumped approach. The results here present...

The chapter focuses on the enhanced stiffness modeling and analysis of serial kinematic chains with passive joints, which are widely used in parallel robotic systems. In contrast to previous works, the stiffness is evaluated for the loaded working mode corresponding to the static equilibrium of the elastic forces and the external wrench acting upon the manipulator end point. It is assumed that ...

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The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that includes simultaneous internal and external excitations. This method along with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth cont...

Electrical analogy (Lumped method) is an easy way to model human cardiovascular system. In this paper Lumped method is used for simulating a complete model. It describes a 36-vessel model and cardiac system of human body with details that could show hydrodynamic parameters of cardiovascular system. Also this paper includes modeling of pulmonary, atrium, left and right ventricles with their equi...