Purpose <p>The proper modeling of bolted joints is essential for analyzing the dynamic behavior of wind turbine blades. The way bolted joints are modeled significantly affects the accuracy of predicting both the natural frequencies and the overall dynamic response of the blade, making the choice of modeling approach a key factor for reliable finite element simulations. In this study, the effects of different bolted joint models in predicting the dynamic behavior of a wind turbine blade are investigated, aiming to determine the optimal finite element modeling method for bolts.</p> Methods <p>A small wind turbine blade was selected, and its 3D model was created in CAD software and imported into finite element software for dynamic analysis. Four bolted joint models between the blade and hub were evaluated: rigid, elastic beam, spring, and detailed 3D finite element. The study included harmonic analysis of imbalance forces caused by blade icing, and impact analysis using a transient gust force applied to the blade’s center.</p> Results <p>The results indicate that different modeling approaches significantly affect the predicted dynamic behavior of wind turbine blades. Models with flexible connections, such as beams and springs, simulate bolted joint behavior more accurately and closely match the results of detailed 3D models.</p> Conclusion <p>The prestressed elastic beam model with umbrella-shaped rigid crown connections is the most appropriate approach for modeling bolted joints and analyzing the dynamic behavior of horizontal-axis wind turbines, as it improves the accuracy of natural frequency predictions.</p>