A comparative study of heat formation in various metals due to different types of stresses using finite element analysis

The process of heat generation or absorption in metals under stress is caused by intermolecular interaction taken place after applying external force. Quantity of generated or absorbed heat depends on the magnitude of the applied force and the induced stress. The relationship between the heat and stress is one of the basic material property that determines the failure of that specific metal. So, it is important to know the relationship between the stress and formation of heat in material while designing a product. Two basic parameters, material property and induced stress, determine the quantity of generated or absorbed heat. Again, induced stress determines the fact if heat would be absorbed or be generated. No significant and to the point research work has been found about this subject, hence the aim of this study is to observe the generation of heat in different metals under different types of load condition. For the analysis, the chosen metals were Cast iron, Aluminum, AISI 4340 and Structural steel. These metals were chosen because of being widely used as engineering metals. The applied load conditions for the experiment were tension, compression and bending. The analysis was conducted using finite element technique in ComsolMultiphysics 5.3. The geometry of the metal was designed in Solidworks Premium 2016 and then imported in thermoelastic physics interface of ComsolMultiphysics. The loading conditions were varied to determine the relationship between the stress and generated heat and later compared with each other. The results show that the rate of generation of heat for AISI 4340 is greater than other metals at its ultimate strength. The temperature distribution shows that, the dissipation of temperature throughout the specimen is greater in aluminum than other three metals. These results will be useful in choosing metals that are to be used for fabricating devices employed in dynamic load condition.The process of heat generation or absorption in metals under stress is caused by intermolecular interaction taken place after applying external force. Quantity of generated or absorbed heat depends on the magnitude of the applied force and the induced stress. The relationship between the heat and stress is one of the basic material property that determines the failure of that specific metal. So, it is important to know the relationship between the stress and formation of heat in material while designing a product. Two basic parameters, material property and induced stress, determine the quantity of generated or absorbed heat. Again, induced stress determines the fact if heat would be absorbed or be generated. No significant and to the point research work has been found about this subject, hence the aim of this study is to observe the generation of heat in different metals under different types of load condition. For the analysis, the chosen metals were Cast iron, Aluminum, AISI 4340 and Structural steel. ...