Stress and thermal analysis on the piston head using finite element analysis (FEA) / Mohd Hairul Asnawee

This study on the Stress and Thermal Analysis are motivated by the problem that occur in the SI Engines. MSC. Nastran Software is a Finite Element Methods Analysis that uses to determine the stress and thermal on the piston head. The analysis base on the piston head in the Spark Ignition (SI) Engines. The objective of the project is to analyze stress and thermal on the piston head and to select the best sparks ignition timing angle that produce less maximum stress and thermal on the piston head. The angles in this analysis are -18 o, -16 o, -12 o, -10 o and -8 o before the Top Dead Center (TDC). The piston type is flat piston head. From the result and data analysis, the best selection of the spark ignition angle that has less maximum stress and temperature is at angle -8 ° before TDC. The maximum stress is 1.74 x 108 Pa and the maximum temperature is 1260° C and. This lower stress and temperature will give long lifecycles to the piston in S.I. Engines before failure. Therefore, it will reduce the cost of the engine maintenance. Finally, the study of the stress and thermal analysis has successfully full fill the objectives of this final project.