Ansys Structural Analysis Quiz

Random Vibration Analysis is a technique used to analyze the response of a structure or system to random vibrations. These vibrations typically have a wide range of frequencies, and the analysis considers the frequency content of the input vibrations. Therefore, the results obtained from Random Vibration Analysis are indeed frequency dependent, as they are influenced by the specific frequencies present in the input vibrations.

Young's Modulus and Poisson's ratio are the mandatory material properties needed for Static Structural Analysis. Young's Modulus is a measure of a material's stiffness and is used to determine how much a material will deform under a given load. Poisson's ratio, on the other hand, is a measure of a material's ability to deform in the perpendicular direction when subjected to a load. Together, these two properties provide important information about a material's behavior under static loads and are necessary for accurate structural analysis.

When a frictionless contact type is assigned to a contact interface in modal analysis, ANSYS will automatically convert it into a no separation type contact. This means that ANSYS will assume that the contact interface will not separate during the analysis, and there will be no sliding or relative motion between the surfaces in contact. This assumption simplifies the analysis and allows for easier calculations. Therefore, the statement is true.

In SpaceClaim, it is possible to copy geometrical entities such as curves, faces, and bodies. This means that users can duplicate and replicate these entities within the software, allowing for easier editing and manipulation of the geometry.

Both the Pull Tool and Move Tool can be used to extrude a face. This means that both tools have the capability to extend a selected face in a specific direction, creating a new geometry. The Pull Tool allows the user to pull the face along its normal direction, while the Move Tool allows the user to move the face in any desired direction. Therefore, it is correct to say that both tools can be used for extruding a face.

The Newton-Raphson method is used by ANSYS to converge a nonlinear solution. This method is an iterative technique that starts with an initial guess and then uses the derivative of the function to update the guess in each iteration, gradually approaching the true solution. It is a widely used numerical method for solving nonlinear equations and is known for its fast convergence rate.

FEM, or the Finite Element Method, does not provide an exact solution to problems. Instead, it provides an approximate solution by dividing a complex problem into smaller, simpler elements. These elements are then analyzed individually, and the results are combined to obtain an approximate solution. Therefore, the statement that FEM gives an exact solution is false.

When the large deflection option is switched on, it accounts for stiffness variation, large rotations, and large strains. This means that the option takes into consideration the changes in stiffness, the significant rotations that occur, and the extensive strains experienced in the system. Therefore, all of the given options are correct and are accounted for when the large deflection option is switched on.

A cylindrical joint allows rotation around one axis and translation along that axis. It has one degree of freedom for rotation and one degree of freedom for translation, making a total of two degrees of freedom.

The number of degrees of freedom for a 3D solid element, whether it is a hexahedral (Hex) or tetrahedral (Tet) element, is 3. This means that each node of the element has three degrees of freedom, which typically represent the displacements in the x, y, and z directions. These degrees of freedom allow the element to move and deform in three-dimensional space.

An eigenvector represents the mode shape in the formulation of Modal Analysis. In Modal Analysis, the mode shape describes the spatial distribution of the vibration or deformation of a structure at a specific natural frequency. The eigenvector represents the shape or pattern of the vibration or deformation, indicating how different parts of the structure move relative to each other. By analyzing the mode shapes, engineers can gain insights into the dynamic behavior and response of the structure, which is crucial for designing and optimizing structures to avoid resonance and improve performance.

In Harmonic Analysis, the analysis focuses on the response of a structure to harmonic loads, which are loads that vary sinusoidally with time. Gravity load is a static load that does not vary with time, and therefore it is not supported in Harmonic Analysis. Pressure and moment, on the other hand, can vary with time and are supported in Harmonic Analysis. Therefore, the correct answer is Gravity Load.

The pinch option in ANSYS meshing is used to remove intricate and small features from the mesh. This means that it eliminates any small details or complex geometries that may not be necessary for the analysis. By removing these features, the mesh becomes cleaner and more efficient, leading to faster and more accurate simulations.

ANSYS archive files are saved in the .wbpz format.

The correct answer is "Symmetric Solver" because in ANSYS, there are various solvers available to solve different types of problems. The PCG Solver is an iterative solver used for solving large linear systems of equations. The Direct Solver is used for solving small to medium-sized linear systems of equations. The Iterative Solver is used for solving nonlinear problems. However, there is no solver called "Symmetric Solver" in ANSYS.

A body suppressed in SpaceClaim will not be imported into Mechanical. When a body is suppressed in SpaceClaim, it means that it is not included or visible in the model. Therefore, it will not be imported into Mechanical, as it is not part of the model that is being transferred between the two software programs.

This statement is false because acceleration is a measure of how quickly an object's velocity changes over time. It is a property of the entire object, not just a single part of an assembly. Therefore, acceleration cannot be applied to a single individual part of an assembly.

The given statement is false. APDL solver and Workbench solver are not two separate independent solvers. In fact, APDL solver is a component of Workbench solver. Workbench solver is a comprehensive simulation tool that includes APDL solver along with other solvers, providing a unified platform for various types of analyses. Therefore, they are not independent but rather interconnected within the Workbench environment.

The pinball region can be used to change the status of a contact pair to CLOSE in the Mechanical window. The pinball region is a parameter that defines the size of a virtual sphere around the contact point. If the distance between the contact point and any part of the model is less than the pinball region, the contact pair is considered to be in contact and the status is changed to CLOSE. Therefore, the pinball region is a useful tool for simulating contact interactions in mechanical systems.

The stresses and strains calculated on an element are typically determined at integration points. Integration points are specific locations within an element where the properties and behavior of the element are evaluated. These points are strategically placed within the element to ensure accurate calculations of stresses and strains. Therefore, the correct answer is integration points.