PSI - Issue 70

P. Saravana Kumar et al. / Procedia Structural Integrity 70 (2025) 43–50

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ISMB 200, ISMB 125, and ISMB 100 were 55 KN/mm, 50 KN/mm, and 20.25 KN/mm, respectively. These results demonstrate that deeper beams offer higher resistance to deflection under static loads, with ISMB 200 being the stiffest compared to ISMB 100. This proves that increasing the depth of the beam enhances stiffness, making it more effective for structural applications. In terms of dynamic behavior, the deflection increased with higher energy input during impact loading. Among the tested beams, ISMB 200 showed the least deflection, indicating better impact resistance and structural stability compared to ISMB 100. The natural frequencies for ISMB 200, ISMB 125, and ISMB 100 were found to be 4.0 Hz, 4.35 Hz, and 5.26 Hz, respectively. These results suggest that beams with lower stiffness, like ISMB 100, tend to vibrate at higher frequencies due to their lower mass and rigidity. ISMB 200 absorbed more impact energy before significant deflection occurred, making it more suitable for handling dynamic loads. The natural frequency data is illustrated in the bar chart shown in Fig. 4 .

Fig .4. Natural Frequency of beam specimens

4.2 Analytical Result To create the finite element model in ANSYS there are multiple tasks that have to be completed for the model to run properly. Models can be created using command prompt line input or the Graphical User Interface (GUI). For this model, the GUI was utilized to create the model. The ANSYS simulation accurately reflected the experimental observations, showing consistency in the deflection patterns. The numerical model effectively captured the beam's response to both static and impact loads, further validating the reliability of the experimental setup. The ANSYS simulation successfully represented the structural behavior and deflection patterns observed during the experiments. The numerical model accurately replicated the physical behavior of the beam, confirming the reliability of the experimental data. The load deflection behavior of all the beams is plotted as shown in Fig. 5. This validation emphasizes the importance of FEM-based simulations in structural analysis, as they provide valuable insights into load distribution, stress concentration, and deformation behavior. The study highlights the role of finite element modeling in predicting real-world structural performance, assisting in the design and optimization of beams for various engineering applications. The deflection and stress distribution are shown in the form of contour plots in Fig. 6.