Analysis and optimization of crankshaft

Crankshaft basic purpose is to generate power in engine from rotary motion. But it may fail after particular life cycle this occurs to its geometry, weight distribution etc. Major parameter here is stress concentration that is present at weak section. This paper explains various ways in which these critical stress values can be reduced. For this analytical calculations been done and those were compared with ANSYS for normal or standard crankshaft. Optimization been applied to crankshaft i.e. drilling a hole near critical stress location. Again results are obtained for optimized crankshaft. Furthermore, results are compared are percentage of difference and reduced weight are noted.