The validation of a full-field deformation analysis of an aircraft panel: A case study

Abstract

The increased use of optical measurement techniques in industrial environments has the potential to increase knowledge and creates an opportunity for a more comprehensive validation of computational predictions. In this paper, a quantitative validation methodology is applied to a 1 m × 1 m panel from an aircraft fuselage subject to compression and torsion, in order to evaluate the predicted response of the panel. A test matrix with four loading cases, namely pre-buckling and post-buckling compression with and without torsion, was used to demonstrate the capabilities of the validation methodology on the industrial component. The out-of-plane displacement fields were analysed with the aid of image decomposition and a validation process was successfully performed using a quantitative metric. The feature vectors, obtained through image decomposition, representing the surface curvature of the physical and virtual specimens were analysed to assess the similarity of the component’s overall curvature. Then, the feature vectors representing measured and predicted displacements for the four loading cases were used to analyse the deformed shapes and conduct a validation process for the simulation outcomes. The predictions of the deformation of the fuselage panel were found to have a high probability of representing the measured data.

Validation of a structural model of an aircraft cockpit panel: An industrial case study

“…The case study represents a further step on the path from the research laboratory, as represented by the initial work on the methodology by Sebastian et al 13 and the inter-laboratory study reported by Hack et al, 7 via the large-scale study of an industrial component in a laboratory described recently by Dvurecenska et al, 14 to a ground-test on an aircraft fuselage at the manufacturer's site. This represents a progressive rise in the technology readiness level of this approach to the validation process for computational solid mechanics models and the resolution of a number of issues that had been identified during this transition from research laboratory to industry.…”

MMPD-Net: An Aircraft Deformation Prediction Network Based on Multimodal Fusion

“…Liu et al [21] proposed new cross-scale method to predict the structural deformation of aircraft materials, and the method has been applied to multiple stages of multiple assembly and achieved good results. Dvurecenska et al [22] use image decomposition analyzed the feature vectors of different aircraft deformations, and evaluated the relationship between the curvature of deformations. Sagadeev et al [23] proposed a method for monitoring the deformation of aircraft structure using optical fiber sensing and measurement technology.…”