Launch vehicle structures, such as payload adapters and interstages, are increasingly designed constructed using composite materials due to their high stiffness- strength-to-weight ratios. Therefore, it is important develop a validated finite element modeling methodology for designing analyzing launch-vehicle shell structures. This can be achieved, in part, by correlating high-fidelity numerica...

The wire arc additive manufacturing (WAAM) technology in combination with computational design shows a big potential for realising novel force-flow optimised and material-efficient connections. This contribution deals point-by-point WAAM, material deposition strategy that allows to place precisely where structurally needed or aesthetically desired. could be applied, among others, type of steel ...

The presence of the delamination causes reductions in the bending stiffness which in turn leads to the undesirable loss in the compressive buckling and post-buckling strength. Thus, it is of chief importance to investigate the compressive behavior of composites with delaminations. Anastasiadis et al. analyzed the buckling and postbuckling behavior of delaminated composite laminates with a throu...

The paper presents a methodology for the enhanced stiffness analysis of parallel manipulators with internal preloading in passive joints. It also takes into account influence of the external loading and allows computing both the non-linear “load-deflection” relation and the stiffness matrices for any given location of the end-platform or actuating drives. Using this methodology, it is proposed ...

This article is concerned with the mechanical properties of dense, vertically aligned carbon nanotube foams subject to one-dimensional compressive loading. We develop a discrete model directly inspired by the micromechanical response reported experimentally for CNT foams, where infinitesimal portions of the tubes are represented by collections of uniform bi-stable springs. Under cyclic loading,...

Abstract The paper deals with the elastostatic modeling of a multi-link flexible manipulator based on two-dimensional (2D) dual-triangle tensegrity mechanism and its nonlinear behavior under external loading. main attention is paid to static equilibriums stiffness loading for arbitrary initial configuration. It was proved that there quasi-buckling phenomenon this while increasing. In neighborho...