Structural and modal analysis of carbon steel members exposed to heat loading is the focus of this research. Both the cantilever and fixed-end components undergo theoretical stress and deflection calculations. The effect of deflection and stress on members with varying cross sections but the same cross section area has been investigated as well. Heat stresses and deformations caused by limited mechanical forces are often overlooked while designing structural components. When it comes to mechanical parts, temperature changes may have an impact. In this study, the effects of temperature change on structure are explored.. As it becomes hotter, the material swells, which might affect its structural performance. If you don't take into consideration the effects of limited settings, you might end up with dangerous designs. The structural performance of constructions that are exposed to high temperatures is significantly impacted by this. The major goal of this inquiry is to analyse beam deflection and stress. ANSYS is used to do feasibility studies, which are then compared to outcomes from real-world tests. As the temperature rises, ANSYS is used to investigate how this impacts the structure's mode shape and frequency