International Journal of Engineering Research

S. N. Anand ¹, T. V. Sreerama Reddy ², D. Madhu ³

Affiliations
1 School of Mechanical Engg., Reva University, Bengaluru, Karnataka, IN
2 Mechanical Engineering, Bangalore Institute of Technology, Bengaluru, Karnataka, IN
3 Mechanical Engineering, Government College of Engineering, Ramanaga, IN

Abstract

In this work, due to rapid development of BEM, thermal conduction problem is solved using the boundary integral equation formulation and boundary element solution method. Arbitrary bodies which are three dimensional in shape are analyzed and addressed. The geometry of the body is divided into triangular patches using triangular patch modeling. A numerical solution is developed by defining the basis functions on the face of the triangles generated in the triangular patch modeling, in contrast to defining it on the nodes as followed in the regular BEM solutions. The temperature distribution from the surface of the hot body is plotted for different boundary temperature. Also the convergence study is conducted to get the solution convergence towards the exact solution for the case of a sphere. Other geometries bodies like cube and cylinder are also treated.

Keywords

Boundary Integral Equations, Thermal Conduction, Face Based Basis Functions, Error Analysis.

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B. K. Shivananda ¹, Madeva Nagaral ², D. Madhu ³, V. Auradi ⁴

Affiliations
1 Mechanical Engineering, UVCE, Bangalore, Karnataka, IN
2 Aircraft Research and Design Centre, HAL, Bangalore, Karnataka, IN
3 Mech. Engg., Sri Nandhanam College of Engg. & Tech, Tirupattur, Tamilnadu, IN
4 R&D Centre, Mechanical Engineering, SIT, Tumkur, Karnataka, IN

Abstract

The present work, aims at investigating the wear properties of AA2024 alloy before and after introducing micro size Boron Carbide (B₄C) particulates. B₄C particulate reinforced AA2024 alloy metal matrix composites were prepared by stir casting method. Weight fraction of the reinforcement was varied 0 to 6 wt. % of B₄C in steps of 3 wt. %. For each composite, during processing the reinforcement particles were pre-heated to a temperature of 400°C and then dispersed into the vortex of molten AA2024 alloy. The micostructural characterization was done using scanning electron microscope, which revealed uniform distribution of B₄C particles in Al matrix. Pin-on-disc wear testing machine was used to evaluate the wear of prepared specimens, in which a hardened EN32 steel disc was used as the counter face. The results revealed that the wear in terms of height loss was increased with increase in normal load and sliding speed for all the conditions. Further, wear studies also suggest that wear resistance of the AA2024-3 & 6 wt. % B₄C composites was lesser than that of the AA2024 matrix.

Keywords

AA2024 Alloy, B₄C, Stir Casting, Hardness, Tensile Strength.

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