We introduce a general and fast convolution-based method (FCBM) for peridynamics (PD). Expressing the PD integrals in terms of convolutions computing them by Fourier transform (FFT), we reduce computational complexity models from O(N^2) to O(Nlog_2 N), with N being total number discretization nodes. Initial neighbor identification storing information is not required, and, as consequence, memory...

Nano-particles consisting of a core surrounded by multiple outer shells (multishell particles) are used as novel functional materials as well as stiffeners/toughners in conventional composites and nanocomposites. In these heterogeneous particles, the mismatch of thermal expansion coefficients and lattice constants between neighboring shells induces stress/strain fields in the core and shells, w...

A geometrically exact analytical model of cable-driven parallel manipulators operating in a three-dimensional space is formulated and discussed this work. The aims at investigating the positioning rigid body Cartesian by m-cables-driven manipulator taking into account cables mass, their elasticity and, consequently, sag effect. direct kinematic problem means 3(m+1) nonlinear equations expressin...

Employing Dynamic Discrete Dislocation Plasticity (D3P), an elastodynamic analysis of the shielding of a stationary crack tip by dislocations is studied. Dislocations are generated via FrankRead sources, and make a negligible contribution to the shielding of the crack tip, whereas dislocations generated at the crack tip via homogeneous nucleation dominate the shielding. Their effect is found to...

The paper focuses on the robust identification of geometrical and elastostatic parameters of robotic manipulator. The main attention is paid to the efficiency improvement of the identification algorithm. To increase the identification accuracy, it is proposed to apply the weighted least square technique that employs a new algorithm for assigning of the weighting coefficients. The latter allows ...