structural analysis

Prestress optimization of hybrid tensile structures

This paper deals with cable domes design and study the role of the cable prestress and of the prestress optimization. In particular it is shown how, for a generic spatial truss, a suitable cable pretensioning makes us able to assign a geometrical stiffness to the whole structure and, in this way, to improve its overall behavior.

Integrating automatic zone modeling with GA for structural optimization of a composite wing

This work by Embraer and ITA is intended to present a two-step methodology for the structural optimization of a preliminary composite wing based on automatic zone modelling strategy followed by GA iterations.

Stochastic improvement of structural design

Design is not an one-step process, but it evolves along many phases which, starting from an initial idea, include drafting, preliminary evaluations, trial and error procedures, verifications and so on. All those steps can include considerations that come from different areas, when functional requirements have to be met which pertain to fields not directly related to the structural one, as it happens for noise, environmental prescriptions and other analysis.

A New Method to Preliminary Design Structural Components

The aim of the hot structure design process is to ensure the structural integrity of the component minimizing two fundamental parameters: mass and thickness. The former influences the total weight of the vehicle, the latter influences the vehicle efficiency.

Fluid-Structure Optimization of a Rectangular Wing

Over recent decades many new composites have been developed, some with very valuable properties. By carefully choosing the reinforcement, the matrix, and the manufacturing process that brings them together, engineers can tailor the properties to meet specific requirements. They can, for example, make the composite sheet very strong in one direction by aligning the fibres that way, but weaker in another direction where strength is not so important.

Velocity Impact Damage on a Composite Plate

Laminate composite structures suffer from poor resistance to impact, resulting in internal damage that often cannot be detected by visual inspection, which may cause severe reductions in strength and increase under load. In order to simulate the impact event the LS-DYNA FE model was developed and coupled with modeFRONTIER.

Structural optimization coupled to fluid-structure interaction of an UAV aircraft wing

The main objective of this paper is to study and to propose a methodology in order to obtain an optimized internal wing structure of the UAV aircraft. Such optimization takes into account the static aeroelastic effects of Fluid-Structure Interaction (FSI) through Computation Fluid Dynamics (CFD) techniques coupled with the Finite Element Method (FEM).