proposed a FE modeling method to investigate joint failure tests in airframe crashes using three-dimensional FE models. In three-dimensional modeling, detailed FE models with large numbers of elements are developed to simulate crashworthiness and joint failure tests of structures with riveted connections, where plastic deformations are considered. FE models of structures with riveted connections can be developed in two ways: three-dimensional and two-dimensional axisymmetric modeling. In recent studies, numerous finite element (FE) analysis results of structures with riveted connections have been presented. One typical application of solid rivets can be found in manufacturing structural components of aircraft by layering two or three sheets of materials and then joining them with solid rivets. There are different types of rivets in daily applications, including solid, self-piercing, and blind rivets, and solid rivets are one of the most reliable types of rivets. A riveted joint can consist of one or multiple riveted connections. ![]() They need to be knowledgeable about riveted joints. Hence, assessing, maintaining, and retrofitting existing components with riveted joints are important for structural designers and engineers. Specifically, riveted joints are mainly applied in industry such as aircrafts, bridges, and building frames. While the use of high-strength bolts becomes more and more popular, riveted joints are still one of the most commonly used fasteners nowadays. To build complex engineering structures, various types of fasteners are needed to join various components together. The maximum difference of the natural frequencies was 1.63% for the first 23 out-of-plane elastic modes, and modal assurance criterion values for the corresponding mode shapes were all over 95%, which indicates high accuracy of the proposed linear FE modeling method. Natural frequencies and corresponding mode shapes of the test structure were measured and compared with those from the linear FE model. ![]() A linear FE model of the test structure was constructed using the proposed method. A linearity investigation was conducted to validate that the test structure could be considered to be linear. A joined structure with six riveted connections was prepared and tested. An experimental investigation was conducted to study accuracy of the proposed linear FE modeling method. The riveted connections are modeled using solid cylinders with dimensions and material properties obtained from the nonlinear FE models in the first step. The second step is to develop a linear FE model of a joined structure with the riveted connections simulated in the first step. The first step is to develop nonlinear FE models that simulate riveting processes of solid rivets. The proposed FE modeling method consists of two steps. In this work, an accurate linear finite element (FE) modeling method is proposed for joined structures with riveted connections to estimate modal parameters in a predictive manner. However, accurately modeling joined structures with riveted connections can be a challenging task. Riveted connections are widely used to join basic components, such as beams and panels, for engineering structures.
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