International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
CAE ANALYSIS – PROPELLER BLADE Vaibhav Bhapkar1, Prathmesh Devkar2, Chaitanya Ambre3, Rohan Bhere4, Prof. Wasim Shaikh (Guide) 1,2,3,4 Dept.
of Mechanical Engineering, DRIEMS, Neral, Maharashtra, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Basically propeller design aims at achieving high propulsive efficiency at low levels of vibration and noise, generally
with minimum cavitations. Achieving this aim is quite difficult with conventional propellers, as we know in modern world vessels have become faster and larger, that is why propeller diameters have remained limited by draught and other factors. Nowadays fiber reinforced composites are getting wide spread use in naval applications in recent times. Vessels and submarines like torpedoes, container ships, etc. and these huge bodies require propeller to drive them. Their performance mainly depends upon the efficiency of the propeller. Its surface finish and geometric properties will ultimately decide the efficiency of the propeller, which are designed for deeper and moderate depth which is required for minimizing of structural weight for increasing payload, Execution and operating range for that purpose Al alloy casting comes in use for fabricating propeller blades. In recent years the increased demand for the low weight structural element with acoustic insulation has resulted to take fiber reinforced multi-layer composite in account for propeller. This study carries out the structural analysis of a carbon fiber reinforced plastic aka CFRP propeller blade which is likely to replace the Aluminum propel blade. Further propeller is applied to an external hydrostatic force on alternate side of the blades based on the operating depth and water current around the propeller which also results in differential hydrodynamic pressure between front and back surfaces of blades. For developing the fine mesh model HYPERMESH is imported from SOLIDWORKS by converting it into IGES file. By varying material propertiesin pre-processing stage static structural testing was conducted. And then by importing IGES file, further analysis was done using ABAQUS. Key Words: Analysis, Corrosion, Stress, Strain. forward. Some information regarding its power source. The laws on which its motion and other things depends such as Bernoulli's Principles, continuity equation and newton viscosity and motion laws. And the behavior of ship propeller inside the water.
1. INTRODUCTION A propeller converts rotary motion from an engine or other power source into a swirling slipstream which pushes the propeller forwards or backwards. It comprises a rotating power-driven hub, to which are attached several radial airfoil-section blades such that the whole assembly rotates about a longitudinal axis. The blade pitch may be fixed, manually variable to a few set positions, or of the automatically-variable "constant-speed" type.
Chapter 2: literature review, In order to be precise in work different data collected which is about different types of propeller. This gave the basic idea about the force and pressure which a propeller blade get act on itself in different scenarios. The size and angle in some areas can change the efficiency of the blade. This majorly helps in reducing formed stress.
1.1 Project background
Chapter 3: Problem Definition, deals with the problems aroused due to the application of certain propeller in different situation in various type of water level and water pressure. This leads to the failure of the ship propeller which may lead to huge loss. The material used in the process to make the propeller plays the crucial role in stress distribution along it. After defining the problem the methodology works on material of propeller.
A Propeller is fan like rotating structure which is used to propel the ship by using the power generated by the main engine of the ship. The transmitted power is converted from rotational motion to generate a thrust which imparts momentum to the water, resulting in a force that acts on the ship and pushes it forward. A ship propels on the basis of Bernoulli’s principle and Newton’s third law. A Pressure difference is created on the forward and the side of the blade and water is accelerated behind the blades.
Chapter 4: In methodology the process of analyzing the stress on software is defined. The different important parts are mentioned and defined. The materials which possibly can be use to make the propeller blades are mentioned and then filtered to nickel aluminium bronze (NAB) to be the fittest. Then the design aspects are considered in order to make the model in software. Then the analysis carried out in other software by putting the required entities.
1.2 Organization of Report Chapter 1: Introduction includes fundamental information about the propeller of Ship. The position of the propeller which may vary. The motion which ship propeller imparts with in water to possibly push the water in order to move
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