![]() In the x minimum edit field, type -0.ġ0 Locate the Output Entities section. From the Include entity if list, choose Entity insideġ0 Click the Wireframe Rendering button on the Graphics toolbar.Ģ In the Box settings window, locate the Geometric Entity Level section.Ĥ Locate the Box Limits section. You to change the geometry topology while still keeping the desired selection.Ģ In the Box settings window, locate the Box Limits section.ĩ Locate the Output Entities section. The box selection is independent of the geometry, and allows The bolt domains, while a second selection contains the area around the load-bearingīoundaries of the holes. The use ofĪrbitrary box selections is one way to do this. Specifications of similar boundary conditions or solid domain specifications. Still may need to access different parts of it for definitions such as multiple Independent of whether the model is treated as a single entity or as an assembly, you If Form anĪssembly is selected instead, the mounting bolts would not be connected to theīracket, and the structural contact between the bolts and the bracket could beġ In the Model Builder window, under Component 1 > Geometry 1 right-click Form The first step to build a model is to open COMSOL and then specify the type ofĪnalysis you want to do in this case, a stationary, solid mechanics analysis.ġ In the Model Wizard window, click the 3D button.ģ From the Geometry import list, choose COMSOL Multiphysics file.ĥ Browse to the model’s Model Library folder and double-click the fileīy using the default setting, Form a union, the mounting bolts are automaticallyīonded to the bracket and the internal boundary assumes continuity. Model Library path: Structural_Mechanics_Module/Tutorial_Models/ġ In the New window, click the Model Wizard button. The total reaction force in the load direction (y) is close to the 8 kN applied as load.Īlong the x and z directions the values are zero except for small numerical errors. Negative y direction, the principal stress plot shows tensile stress in the arm of theįigure 5: Principal stress in the bracket left arm. The choice of a linear elastic material to analyze this structure.įigure 4: Bracket deformation under tensile load in y-axis direction.įigure 5 shows the principal stresses in the bracket. Von Mises stress remains below the yield stress value for structural steel which validates As expected, the high stress valuesĪre located around the holes and in the vicinity of the mounting bolts. (automatically scaled) picture of the deformation. Resultsįigure 3 shows the von Mises stress distribution together with an exaggerated In this study, the load will be pointing along the negative y-axis only. The type of load distribution is shown in Figure 2:įigure 2: Load distribution applied to the bracket arms. The direction of the load is given in a local coordinate system controlled by a parameter theta0. The main direction of the load is defined by , ![]() Sinusoidal distribution on the inner surfaces of the two holes: To model the external load from the pin, specify a surface load p with a In this analysis, the mounting bolts are assumed to be fixed and securely bonded to theīracket. Mounted on a pin placed between the two holes in the bracket arms. This type of bracket can be used to install an actuator that is The model used in this guide is an assembly of a bracket and its mounting bolts, whichĪre all made of steel. ![]() You will learn how to analyze results and check the reaction forces. Properties and boundary constraints and conditions. This includes creating a geometry as well as defining material Problems and how to apply them in COMSOL Multiphysics and the Structural This tutorial model summarizes the fundamentals to model structural mechanics ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |