Squeeze Casting Parameter Optimization Using Swarm Intelligence and Evolutionary Algorithms

Squeeze Casting Parameter Optimization Using Swarm Intelligence and Evolutionary Algorithms

Manjunath Patel G. C., Prasad Krishna, Mahesh B. Parappagoudar, Pandu Ranga Vundavilli, S. N. Bharath Bhushan
Copyright: © 2018 |Pages: 26
DOI: 10.4018/978-1-5225-5134-8.ch010
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Abstract

This chapter is focused to locate the optimum squeeze casting conditions using evolutionary swarm intelligence and teaching learning-based algorithms. The evolutionary and swarm intelligent algorithms are used to determine the best set of process variables for the conflicting requirements in multiple objective functions. Four cases are considered with different sets of weight fractions to the objective function based on user requirements. Fitness values are determined for all different cases to evaluate the performance of evolutionary and swarm intelligent methods. Teaching learning-based optimization and multiple-objective particle swarm optimization based on crowing distance have yielded similar results. Experiments have been conducted to test the results obtained. The performance of swarm intelligence is found to be comparable with that of evolutionary genetic algorithm in locating the optimal set of process variables. However, TLBO outperformed GA, PSO, and MOPSO-CD with regard to computation time.
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Introduction

The hybrid squeeze casting process was developed by combining the distinct features such as strength, integrity, economic and design flexibility of conventional casting (gravity and die casting) and forging processes (Rajgopal, 1981). The benefits of the squeeze casting process over conventional casting and forging process are near net-shape castability, simpler tooling construction, high productivity, refined structure, improved surface finish, heat-treatability, minimum porosity and segregations, ability to cast ferrous, non-ferrous and wrought alloys (Rajgopal, 1981; Ghomashchi & Vikhrov, 2000). These benefits have helped the squeeze cast parts to find their applications in automobile parts, namely piston, cylinder, clutch housing, brake drum, engine block, connecting rod, wheels, suspension arm, hubbed flanges, barrel heads, truck hubs, and so on (Rajgopal, 1981; Ghomashchi and Vikhrov, 2000; Krishna, 2001).

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