Strength Analysis of a Ducted Axial Fan Blade
Journal Title: Problemy Mechatroniki. Uzbrojenie, lotnictwo, inżynieria bezpieczeństwa - Year 2018, Vol 9, Issue 4
Abstract
This paper presents a numerical strength analysis of a ducted axial fan blade. Ducted axial fans are a large group of fluid-flow machines. The analysis was designed to determine the causes of cyclic failures of a ventilation unit. The paper presents a reverse engineering approach to the mapping of the fan blade’s geometrical features. The geometrical features were mapped by triangulation from the scanning images produced by a 3D optical scanner. These were followed by simplifying assumptions on which the numerical calculations were based. The numerical calculations were carried out at the operating rotational speeds of the ducted axial fan’s rotor. The course of the numerical calculations is described, and their results are also presented herein. The results are represented on colour maps of stress distribution for selected structural elements of the fan blade. The stress distribution at a blade cross-section was compared to CT scans of the fractures of failed rotor blade airfoils. Final conclusions were developed which show that the design engineering process of fans should feature optimisation of the fan’s efficiency, including the strength and performance parameters, which should include the service life of the fan.<br/><br/>
Authors and Affiliations
Marek ROŚKOWICZ, Ryszard CHACHURSKI, Sławomir TKACZUK, Piotr LESZCZYŃSKI, Maciej MAJCHER, Łukasz OMEN
Keywords
Related Articles
- EP ID EP408460
- DOI 10.5604/01.3001.0012.7334
- Views 76
- Downloads 0
Zjawisko rykoszetowania amunicji strzeleckiej. Metody badań
W artykule opisano wybrane metody badań zjawiska rykoszetu pocisku amunicji strzeleckiej. Przedstawiony sposób prowadzenia badań został wykorzystany do badania amunicji strzeleckiej kalibrów 5,56 mm, 7,62 mm i 9 mm z poc...
Correction Procedure of Wave Signals for a Viscoelastic Split Hopkinson Pressure Bar
A polymeric split Hopkinson pressure bar technique (SHPB) is preferred for testing materials with low mechanical impedance. However, the use of polymeric bars requires additional analysis for data reduction, temperature...
Determination of Dynamic Reactions in the Rotor Bearings of a New Design of a Seeker Head
This paper discusses tests designed to determine the dynamic reactions occurring in the bearings installed as aligned with the axis of rotation of a rotor for a new design of IR seeker. The seeker is intended to detect...
Analysis of Heat Transfer in a 35 mm Barrel of an Anti-Aircraft Cannon
The paper presents the results of computer simulations of unidentified transient heat transfer in the wall of a 35 mm cannon barrel for a single shot and for a sequence of seven shots with a subsequent firing break. The...
Numerical Analysis of the Effects of the Geometric and Weight Parameters on the Exterior Ballistics of a Designed Counterprojectile
This paper presents a selection of deliverables of a research project intended to develop a technology demonstrator for an active protection system smart counterprojectile. Numerical simulations were completed to analyse...