Initial-value ordinary differential equation solution via variable order Adams method (SIVA/DIVA) package is collection of subroutines for solution of nonstiff ordinary differential equations. There are versions for single-precision and double-precision arithmetic. Requires fewer evaluations of derivatives than other variable-order Adams predictor/ corrector methods. Option for direct integration of second-order equations makes integration of trajectory problems significantly more efficient. Written in FORTRAN 77.

Solving Ordinary Differential Equations

A review of vibration-based damage detection in civil structures : from traditional methods to Machine Learning and Deep Learning applications

The complexity, nonlinearity, and nonstationarity of biological time series typically defy quantitative description. Living systems are governed by numerous, continuously changing, interacting variables in the presence of noise. Such conditions often challenge traditional methods such as Fourier transforms. An approach for assessing such nondeterministic complexity is recurrence quantification analysis (RQA). Strategies implementing quantification of recurrences have often been successful in diagnosing changes in nonstationary signals not easily detected by traditional methods.


Keywords:

recurrence;
time series analysis;
signal analysis

Recurrence Quantification Analysis

A review on works that investigate the mechanical behaviour of variable stiffness composite laminated panels is carried out in this paper. The review mostly focuses on buckling, failure and vibrati...

A review on the mechanical behaviour of curvilinear fibre composite laminated panels

Vibration analysis of variable thickness plates and shells by the Generalized Differential Quadrature method

Local buckling, post-buckling and collapse of thin-walled channel section composite columns subjected to quasi-static compression

Buckling of thin-walled composite structures with intermediate stiffeners

Buckling and postbuckling behaviour of thin-walled composite channel section column

This paper deals with the buckling of thin-walled channel-section composite columns subjected to static compression. It was assumed that the columns were supported with articulated joints at both ends. For experimental testing, three series of specimens were manufactured with autoclaving technique. The specimens had identical dimensions but differed about ply sequence. The Hexcel′s HexPly M12 carbon-epoxy prepreg was used in order to fabricate the channel-section profiles. During the stand tests minimal critical forces of the real structure and the corresponding buckling modes were determined with an application of electrical strain gauges. In addition, post-critical equilibrium paths for small overloads—150% of the critical load for the ideal structure—were determined. The experimental results were compared to the ones obtained numerically with the finite element method (FEM).

Andrzej Teter

Papers

A review on the mechanical behaviour of curvilinear fibre composite laminated panels

Local buckling, post-buckling and collapse of thin-walled channel section composite columns subjected to quasi-static compression

Buckling of thin-walled composite structures with intermediate stiffeners

Buckling and postbuckling behaviour of thin-walled composite channel section column

Experimental investigation of channel-section composite profiles’ behavior with various sequences of plies subjected to static compression