The Deformation Response of a Functional Four-Cylinder Reciprocating Engine using Finite Element Analysis and Surrogate Model

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The aim of this study is to examine the deformation response of a four-cylinder reciprocating engine.The model of the engine was done through Autodesk Fusion 360 ® , while the simulation and analysis were conducted using the finite element analysis backend, Autodesk Nastran solver ® .The engine assembly was subjected to a multibody dynamics study as well as a thermodynamic reaction of air-fuel mixture in the cylinder.A connecting rod was examined from the standpoint of component design to see how the maximum stress changed with crankshaft rotation.To start the engine, several crankshaft speeds were used, and the multibody simulation was carried out for 0.16s.The output from the simulation is used as surrogated data for the intelligent system modelling.A considerable degree of agreement was observed between simulation results and predicted values, demonstrating the reliability and accuracy of the model.Furthermore, it was shown that the Isection region of the connecting rod receives the maximum stress for both materials.It is essential to build this area with more strength as a result.The Von Mises stress of AlSiC is consistently lower than its yield strength, at 5.5MPa compared to 43MPa.Aluminum has a Von Mises stress of 3.5MPa, far lower than its yield strength of 276MPa.Both materials had stress levels below their yield strengths, ensuring connecting rod structural integrity.The primary factor influencing the engine's distortion profile and peak values was found to be engine torque.The findings might serve as a springboard for more research and development in this area and advance our understanding of engine behavior.