PSI - Issue 48

Đorđe Đurđević et al. / Procedia Structural Integrity 48 (2023) 88 –95 Đurđević et al / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 4. Dimensions and shapes of analyzed connecting lug

3. Finite element analysis FEM analysis is one of the most widely used engineering analysis techniques to solve different engineering problems. In this paper, numerical analysis was conduced by the application of finite elements method using „ KOMIPS “ and „ ABAQUS “ softwares. The numerical analysis is divided into three parts. First, the stress and strain calculations of the surface and volume models were performed in the „ KOMIPS “ software, by Maneski (1998) and by Software KOMIPS . In the second part of the numerical analysis, the stresses and strains calculations of the same chosen model from the first part of the paper were done in „ ABAQUS “ software. In the third part of the numerical analysis in the „ KOMIPS “ software, the calculation of the lug was performed, which was then tested experimentally. And, in the third part is shown how the strain and equivalent stress can be reduced if material is removed (by drilling holes), too. In the first part of numerical analysis, four different finite element meshes of connecting lug were discussed, Fig. 5. (a). Boundary conditions of support and loading are given in Fig. 5. (b). Force intensity was 10000N. The axle was considered as a rigid element and was used for loading input. First, the models were created in KOMIPS software. That software was developed at Faculty of Mechanical Engineering, University of Belgrade. This was done in order to adopt a finite element mesh for further numerical calculation.

Mesh model 1

Mesh model 2

Mesh model 3

Mesh model 4

(a) (b) Fig. 5. (a) Four different finite elements meshes; (b) Boundary conditions od support and loading

Deformed lug models, maximum displacements f max and stress field  (equivalent stress) for the mentioned four different finite element meshes are given in Fig. 6. Deformed lug models are given with red colour and that present the diagram of deformation. Maximum von Mises stress values are given for each model with associated scale. Mesh model 1 was chosen for further numerical analysis because it has been observed that the stress value increases as the mesh becomes smaller.