The present article deals with static and dynamic behavior of functionally graded skew plates based on the three–dimensional theory of elasticity. On the basis of the principle of minimum potential energy and the Rayleigh Ritz method, the equations of motion are derived in conjunction with the graded finite element approach. Solution of the resulted system of equations in time domain is carried...

We focus on a simple implicit time integration scheme for the transient response solution of structures when large deformations and long time durations are considered. Our aim is to have a practical method of implicit time integration for analyses in which the widely used Newmark time integration procedure is not conserving energy and momentum, and is unstable. The method of time integration di...

A time-accurate procedure to model fluid/structure interactions of helicopter blades is presented. The Navier-Stokes equations in conjunction with the one-equation SpalartAllmaras turbulence model are used to compute the flow. Structural dynamics is modeled using the modal equations. The aerodynamic and structural dynamic equations are coupled time-accurately using the linear acceleration metho...

recently, scientists developed the seismic rehabilitation of structures and their points of view were changed from strength to the performance of structures. nonlinear static procedure (nsp) or pushover analysis is a new method that is chosen for its speed and simplicity in calculations. “seismic rehabilitation code” & fema356 considered this method. result of this analysis is a target displace...

This paper presents an investigation on thermo-electro-mechanical nonlinear low-velocity impact behaviors of the geometrically imperfect functionally graded (FG) graphene-reinforced composite (GRC) beam with surface-bonded piezoelectric layers. Both uniformly distributed and FG patterns graphene nanoplatelets (GPLs) are considered along thickness GRC host beam. The effective Young’s modulus is ...

Zhang and Shimizu (1998) proposed a numerical algorithm based on Newmark method to calculate the dynamic response of mechanical systems involving fractional derivatives. On basis Runge-Kutta-Nyström method, present study proposes two new algorithms, namely, improved using second order derivative solve differential equations vibration systems. The accuracy algorithms is investigated in detail by...

This paper presents a physical approach to simulate image represented objects’ behaviour. The Finite Element Method (FEM) is employed to physically model the given objects, then modal analysis is used to match some objects’ nodes (by solving the related eigenvalue/vector problem and analysing each node displacement in the respective modal space (Sclaroff, Tavares)), and finally the dynamic equi...

Introduction: In recent years, spacecraft observations of 'medium-sized' asteroids 951 Gaspra, 243 Ida, 253 Mathilde, and most importantly 433 Eros have shown the overriding dominance of impact processes with regard to the structure and appearance of these irregular bodies. In a previous work [1], I investigated the relatively unexplored area of seismic shaking as a cause for the downslope moti...

An implicit integration strategy for use with the Material Point Method (MPM) is described. This strategy uses an incremental–iterative solution strategy based on a Newton method to solve the equations of motion and Newmark integration to update the kinematic variables. An example problem was used to compare the implicit integration scheme to the traditional explicit integration scheme used wit...