Abstract
In today's world, with ever-increasing safety requirements, there is a growing demand to maintain or reduce production costs. In aviation, in addition to factors like weight and related variables such as resistance to vibration, corrosion, temperature and other are also considered. The task of this paper is to analyse unconventional designs of wing beams with respect to the current requirements of the aviation industry. In the article, the authors analyse the possibilities of design modification either by adding ribs to the profile, or by changing the cross-section of the profile itself. In practice, such design changes would increase weight, production time and finances, but also increase strength and thus safety. All proposed changes were subjected to strength analyses by FEM (Finite element method) computer simulations. The article output is the selection of suitable designs for further observation and experimental verification to ensure comprehensive results for the possibility of implementation in practice. Despite the non-traditional shapes of the proposed wing beam cross-sections, the authors assume that traditional beam shapes will be gradually modified more efficiently.
Highlights
The first flight dates back more than 100 years
Materials & Methods The study focused on the strength analysis of different wing beam is divided into two basic groups
In both cases the beams are the H-profile, but the changes are in additional elements, ribs or in the cross-section shape of the beams
Summary
The first flight dates back more than 100 years. Even aircraft designers were looking for ways to build solid wings. In the case of purely girder wings, they ensure the full extent of the transmission of bending loads; in the case of girder half-shells, they play a significant role in the bending transmission (Kindmann, 1993). Their weight is in the range of 25 - 50% of the whole wing weight, while higher values relate to beam wings, lower values to half-shells wings (Chen, C.-C, 2019). The area of building constructions inspired authors with the ability to drop the collapse risk by adding supporting elements to the beams, for example in the form of ribbing (Figure 1-right) (Abdel-Ghaffar, 2003). The ribbing allows a more efficient distribution of internal material stresses and prevents the beam from collapsing (Figure 1-left)
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