Efficient and Robust Topology Optimization of Compliant Mechanisms using Perturbed Geometrically Non-Linear Analysis: Paper Title: "Structural Topology Optimization using Bayesian-Enhanced Perturbed Non-Linear Analysis"

The recent success of - and demand for - compliant mechanisms has increased rapidly within the micro-electromechanical systems-, aircraft-, spacecraft-, surgical-, and precision-instrument industries. Yet, even greater success may be achieved by overcoming the computational cost and instability of the mechanisms' design methodology. This...

Approximate geometric non-linear analysis in topology optimization: A novel kind of structural analysis for topology optimization of finite range compliant mechanisms

Density-based topology optimization, when used to design structures that show geometrical non-linear behaviour, currently faces computational effort and stability issues. These issues are caused by the iterative method used in geometric non-linear structural analysis. On top of taking much computational effort to complete, this method encounters...

Nonlinear Aeroelastic Analysis of a High Aspect Ratio Wing in NASTRAN

Recent decades have seen the range of applications for aircraft expand to niches like weather monitoring, reconnaissance and satellite launch (Air Launch to Orbit, ALO). The requirements for such roles necessitate unconventional features like twin fuselages (in case of ALO mother ships) and very high aspect ratio wings (for long endurance...

A co-rotational floating node finite element for geometric non-linear fracture modelling of composite structures

Fibre-reinforced composites have become increasingly attractive for many engineering applicationsin the last decades. A very interesting aspect of these materials is that their mechanical properties canbe tailored for optimum strength and stiffness by controlling the orientation of the fibers embeddedin the matrix material. Composites are...

Topology optimization of 3D linkages with application to morphing winglets

Topology optimization is the process of optimizing both the material layout and the connectivity inside a design domain. The first paper on topology optimization dates back to 1904, when the Australian inventor Michell derived optimality criteria for minimum weight truss structures. In 1988 Bendsøe and Kikuchi published the pioneering paper ...

A Stoneley-Gibson-Varga elastic stratum

Non-linear governing equations and some special non-linear static solutions. The influence of geometrical non-linearity on the linear theory of static subgrade reaction and surface wave motion of a Gibson soil.