Note: The Expected Completion Time for this quiz is 60 mins but the Maximum Available Time to complete the quiz is 90 mins.
Total Available Time - 90 minsTotal Number of Questions - 45 Times up! Stress Analysis in Ansys Mechanical - Theory Quiz If you get stuck, you can skip the current question and navigate between the different questions by using the 'Previous' and 'Next' buttons.Once you have finished the exam, click on the 'Mark Complete' button to save your progress and move to the next section. 1 / 45 Consider a symmetric parachute that is carrying a weight of 200 N in its center. There is air pressure of 30 MPa acting on the bottom of the parachute. If this situation was to be simulated using a half planar symmetry model, select the best option that represents the loading conditions to be applied on the half-symmetry model. Pressure of 30 MPa, Force of 100 N Pressure of 15 MPa, Force of 100 N Pressure of 15 MPa, Force of 200 N Pressure of 30 MPa, Force of 200 N 2 / 45 When defining a Bushing Joint in Ansys Mechanical, the stiffness matrix can be defined for 6 DOF. If we notice that the stiffness values are only given for the diagonal entries, what does this signify? Select the best option. This signifies that only a static analysis can be performed using this stiffness matrix. This means that the deformation of the 6 joint degrees of freedom are not coupled. This means that the stiffness matrix is the same as the damping matrix. This means that the deformation of the 6 joint degrees of freedom are coupled. 3 / 45 Which of the following inertial load is always applied to "all bodies" of a model? Select the best option. Acceleration Rotational Acceleration Rotational Velocity Standard Earth Gravity 4 / 45 In a 2D analysis, once the 3D model is reduced to a 2D model, which of the following advantages can be observed? Select the two best options. Coarse mesh More numerically accuracy for same number of DOF Reduced DOFs Less computationally efficient result 5 / 45 In SpaceClaim, after creating mid-surfaces from solid bodies, which of the following steps is required to allow generation of a conformal mesh? Select the best option. Define thickness to midsurfaces Connect midsurfaces using Shared Topology Connect midsurfaces using Weld tool Define appropriate contact between midsurfaces 6 / 45 Before performing a finite element simulation, one needs to select the geometry for simulation. Which of the following is TRUE for regions of interest? Select the best option. Coarse mesh should be used on the region of interest Sufficient geometric details should be included in the region of interest The region of interest should always be modeled as rigid body Fewer geometric details should be included in the region of interest 7 / 45 In the submodeling approach, the cut-boundaries are placed far away from the region of interest. It is because if cut boundaries are placed near the region of interest, _____ may be violated. Select the best option to complete the sentence. Tresca's Principle Von Mises Theory Rankine Theory St. Venant's Principle 8 / 45 In Ansys Mechanical, while analyzing stress results, if we observe that the equivalent stress values are exceeding the yield stress value of the material used then, we can _____. Select the two best options. Use an Elastic Material Model Change the Design of the Part Change the Boundary Conditions of the Model Use a Plastic Material Model 9 / 45 In which of the following contact types is sliding NOT allowed? Frictionless Frictional Rough No Separation 10 / 45 Which of the following statements are TRUE regarding a thermal-stress simulation involving a steady state thermal analysis and a static structural analysis? Select the best two options. The geometry has to be same in both the analysis. The element order (linear, quadratic) can be different in both analyses. The geometry can be slightly different as long as the region which has mapped temperatures cover the same spatial location. The element order (linear, quadratic) should be the same in both analyses. 11 / 45 Which of the following statements about inertia relief is TRUE? Select the best two options. It balances out only the translational rigid body motion It will create acceleration fields to balance out the applied loads It will create velocity fields to balance out the applied loads It balances out both translational and rotational rigid body motion 12 / 45 While performing a Stress Analysis, the stress gradient generally _____ with decrease in the mesh size, except for a stress-singularity case where it _____. Select the best option that completes the statement. decreases, remains same increases, remains same decreases, increases increases, decreases 13 / 45 A Table has a pulley hanging on one of its end and the other end has some decorative letters imprinted on it. We are interested in finding the stress distribution on the table due to the varying loads being applied on pulley. To carry out a finite element simulation, which of the following is TRUE for this scenerio? Select the best option. The imprint should be finely meshed, as they have intricate details. The imprints should be neglected since such imprints are never points of failure for any engineered structure. The imprints should be taken into consideration in the table geometry to be used for this simulation. The imprints should be neglected as the imprints are on the other side of the table and would have no role in the stress distribution on table due to the pulley load. 14 / 45 Which of the following statements are True regarding finite element analysis? Choose the two best possible options. The deformation values are directly calculated at nodes of the 3D elements. The stress values are directly calculated at nodes of the 3D elements. The stress values are calculated at internal points and are extrapolated to the nodes of the 3D elements. The deformation values are calculated at internal points and are extrapolated to the nodes of the 3D elements. 15 / 45 In Ansys Mechanical, when analyzing pressure vessels, in order to determine the membrane and bending stresses, we need to use _____ . Select the best option that completes the statement. Stress Tool Linearized Stress Solution Strain Solution Nonlinear Stress Solution 16 / 45 In Ansys Mechanical, if the model is observed to have stress singularities, which of the following statements are TRUE when Adaptive Convergence is used? Select the best two options With the increase in mesh refinement, the equivalent stress at stress singularities keep on decreasing Stress singularities does not converge to a single solution when adaptive convergence is used. With the increase in mesh refinement, the equivalent stress at stress singularities keep on increasing Stress singularities converge to a solution when adaptive convergence is used. 17 / 45 A(n) _____, when applied to the faces lying on the symmetry plane, gives the same results as a Symmetry Region for 3D solid bodies. Select the option that best completes the sentence. Elastic Support Frictionless Support Compression Only Support Fixed Support 18 / 45 In a finite element analysis, if we want to include inertial loads for our simulation which of the following material property needs to be added in addition to Elastic modulus and Poisson's ratio? Select the best option. Bulk Modulus Shear Modulus Thermal conductivity Density 19 / 45 What is the use of Yield and Ultimate Strength of a material in Engineering Data? To evaluate failure in brittle materials only To calculate Factor of Safety To evaluate failure in ductile materials only For Nonlinear Analysis of material 20 / 45 In a finite element analysis, Remote Points can be used to approximate behaviour and kinematics of scoped geometry through the use of a single point. Up to how many degrees of freedom (DOF) does a Remote Point have? Select the best option. 3 (all translational DOF) 5 (3 translational DOF & 2 rotational DOF) 3 (all rotational DOF) 6 (3 translational DOF & 3 rotational DOF) 21 / 45 In Finite Element Analysis, the element has _____ as the unknown quantity that is solved for at all the nodes. Select the best option that completes the statement. Displacement Strain Energy Stress Strain 22 / 45 In Ansys Mechanical, contacts between parts are automatically detected within a tolerance and are assigned _____ type by default. Select the best option that completes the statement. Rough Bonded No Seperation Frictionless 23 / 45 Which of the following options may cause artificially high stresses in a 3D mesh? Choose the three best possible options. Application of point load on a node Constraining a single node Contact with sharp corners on another part Application of a force on a small area 24 / 45 Directional deformation results are plotted in Ansys Mechanical with default settings. Which of the following two statements are correct regarding them? Select the two best options. The largest magnitude of deformation will correspond with a red legend color. The smallest magnitude of deformation may correspond with either a red or blue legend color, depending on the sign of the deformation. The smallest magnitude of deformation will correspond with a blue legend color. The largest magnitude of deformation may correspond with either a red or blue legend color, depending on the sign of the deformation. 25 / 45 Which of the following Supports should NOT be used for Large Deflection analyses? Displacement Support Compression Only Support Cylindrical Support Elastic Support 26 / 45 In Ansys Mechanical, small discrepancies can be observed between the mass reported in the solver output and the mass value mentioned in the Geometry Properties of the part because of various reasons? Select the two best options. Ansys Mechanical assumes a default density for all bodies Coarse meshes may not capture curvature of the geometry Beam Connections are not included in mass under Geometry Properties Only solids are included in the mass under Geometry Properties 27 / 45 Consider a hollow cylinder of thickness 10mm whose inner and outer radius has been parameterized as P1 and P2 respectively. To maintain constant thickness of the hollow cylinder, the expression for outer radius will be: P1 + 10[mm] P2 + 10 P2 + 10[mm] P1 + 10 28 / 45 In Ansys Mechanical, which of the following options are TRUE regarding Weak Springs? Select the two best options. Small Stiffness Spring Elements High Stiffness Weak Springs User must manually locate them on the bodies Helps limits Rigid Body Motion 29 / 45 Stress is a _____ order tensor with _____ components. first, 3 zeroth, 1 third, 9 second, 6 30 / 45 Consider a case where a 3D solid body is first meshed with quadratic hexahedral elements, then meshed with quadratic tetrahedral elements of similar mesh density. How would results compare between the two cases? Select the 3 best options. Both the second-order tetrahedral and hexahedral elements results have similar numerical accuracy. The equivalent (Von-Mises) stress for both the second-order tetrahedral and hexahedral elements are very similar. The deformation and equivalent (Von-Mises) results for both the second-order tetrahedral and hexahedral elements are very distinct. The deformation results for both the second-order tetrahedral and hexahedral elements are similar. 31 / 45 Identify the False statement from the following options? Review all options and select the best one that is not true. Reported stresses at stress singularities are dependent on mesh size and increase with mesh refinement. Stress singularities represent a physical phenomenon causing failure. Use of fillets not only reduce the effects of a stress concentration but also reduce the chance of stress singularities appearing. Stress concentrations are a physical phenomenon that may cause failure. 32 / 45 In Ansys Mechanical, when a "body-to-ground" Joint is inserted, which of the following statement holds true? Select the best option. Only the Reference side needs to be defined No additional definition is needed since auto-detection of both reference and mobile sides take place automatically Both Reference and Mobile sides need to be defined Only the Mobile side needs to be defined 33 / 45 Things to remember when using Shared Topology are ______. Select the 2 best options. It does not merge two interacting parts. It allows interacting parts to have different materials. It merges two interacting parts. It doesn’t allow interacting parts to have different materials. 34 / 45 In Ansys Mechanical, when using Remote Points, which of the following considerations are important? Select the 2 best options. Deformable Remote Points can be used on the plane of symmetry Remote Points should not be used to define Joints Avoid use of Remote Points in thermal stress analysis Regions of two Remote Points should not overlap 35 / 45 In Ansys Mechanical, which of the following coordinate system needs to be selected so that the axial, circumferential, and radial displacements can be reviewed after solving? Select the best option. Cylindrical coordinate system Cartesian coordinate system Global coordinate system Spherical coordinate system 36 / 45 Which statement concerning Cylindrical Supports in Mechanical is correct? Select the best option. Cylindrical supports should not be used in large rotation analyses. For cylindrical surfaces, Bearing Loads and Cylindrical Supports are interchangeable. The user can make the radial component of Cylindrical Supports free but not the tangential component. Cylindrical supports can be safely used in any nonlinear analyses. 37 / 45 If the user wants to obtain accurate surface stresses, which of the following stiffness behavior is best suited when using the Surface Coating feature? Stress evaluation only Bending only Membrane and bending only Membrane only 38 / 45 In a simulation, there are certain geometric details that can be excluded or modified to reduce meshing complexity and solution time while not affecting the outcome of the analysis. Select the two best options that are actions that match this statement. Removing small fillets in the region of interest Removing holes in the geometry of interest Merging tiny slivers present in the CAD model with adjacent faces on the geometry of interest Removing any decorative symbols or lettering on the geometry of interest 39 / 45 In the case of pressure vessels, _____ stresses are the average stresses along the thickness of the body whereas, the _____ stresses are linearly varying stresses through the thickness of the body. Select the best option containing the two missing words in correct order that completes the statement. bending, membrane membrane, bending principal, von-Mises von-Mises, principal 40 / 45 In which of the following contact formulations is the displacements between contact bodies tied internally with constraint equations? Normal Lagrange Pure Penalty Multi-Point Constraint (MPC) Augmented Lagrange 41 / 45 Which of the following 2D Analyses are correctly matched with their Practical Application? Select the two best options. 2D Plane Stress Analysis - Straight reservoir dam 2D Axisymmetric Analysis - Pressurized soda can 2D Plane Strain Analysis - Straight reservoir dam 2D Axisymmetric Analysis - Bellows undergoing bending & torsion 42 / 45 Which of the following settings helps to control the automatic contact generation? Select the 2 best options. Option to choose the bodies for contact generation. Option to change the tolerance type and tolerance value. Option to highlight the shared edges generated by shared topology. Option to include shared topology effects on automatic contact generation. 43 / 45 Consider an model assembly with multiple parts. If we turn on weak springs, which of the following statements are TRUE? Select the best three options. The springs generated have high stiffness value to prevent the rigid body motion. The weak spring reaction forces developed should be low so that they do not influence the solution matrix Springs are generated at corners of each part in the assembly If the weak spring reaction forces are high, this means that the boundary conditions defined on the model may be insuffcient or incorrect 44 / 45 Consider a situation where a Symmetry Region is utilized in a model, and a Remote Point lies on the plane of symmetry. Which type of Remote Point behavior is not supported on the plane of a Symmetry Region? Select the best option. Beam Behaviour Deformable Behaviour Coupled Behaviour Rigid Behaviour 45 / 45 To evaluate if a glass sheet of unifrom cross section has failed in a compression test, which of the following Stress Tool would be the most appropriate? Maximum Shear Stress Safety Tool Mohr-Coulomb Stress Safety Tool Maximum Equivalent Stress Safety Tool Maximum Tensile Stress Safety Tool Your score is 0%
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Stress Analysis in Ansys Mechanical - Theory Quiz
If you get stuck, you can skip the current question and navigate between the different questions by using the 'Previous' and 'Next' buttons.
Once you have finished the exam, click on the 'Mark Complete' button to save your progress and move to the next section.
1 / 45
Consider a symmetric parachute that is carrying a weight of 200 N in its center. There is air pressure of 30 MPa acting on the bottom of the parachute. If this situation was to be simulated using a half planar symmetry model, select the best option that represents the loading conditions to be applied on the half-symmetry model.
2 / 45
When defining a Bushing Joint in Ansys Mechanical, the stiffness matrix can be defined for 6 DOF. If we notice that the stiffness values are only given for the diagonal entries, what does this signify? Select the best option.
3 / 45
Which of the following inertial load is always applied to "all bodies" of a model? Select the best option.
4 / 45
In a 2D analysis, once the 3D model is reduced to a 2D model, which of the following advantages can be observed? Select the two best options.
5 / 45
In SpaceClaim, after creating mid-surfaces from solid bodies, which of the following steps is required to allow generation of a conformal mesh? Select the best option.
6 / 45
Before performing a finite element simulation, one needs to select the geometry for simulation. Which of the following is TRUE for regions of interest? Select the best option.
7 / 45
In the submodeling approach, the cut-boundaries are placed far away from the region of interest. It is because if cut boundaries are placed near the region of interest, _____ may be violated. Select the best option to complete the sentence.
8 / 45
In Ansys Mechanical, while analyzing stress results, if we observe that the equivalent stress values are exceeding the yield stress value of the material used then, we can _____. Select the two best options.
9 / 45
In which of the following contact types is sliding NOT allowed?
10 / 45
Which of the following statements are TRUE regarding a thermal-stress simulation involving a steady state thermal analysis and a static structural analysis? Select the best two options.
11 / 45
Which of the following statements about inertia relief is TRUE? Select the best two options.
12 / 45
While performing a Stress Analysis, the stress gradient generally _____ with decrease in the mesh size, except for a stress-singularity case where it _____. Select the best option that completes the statement.
13 / 45
A Table has a pulley hanging on one of its end and the other end has some decorative letters imprinted on it. We are interested in finding the stress distribution on the table due to the varying loads being applied on pulley. To carry out a finite element simulation, which of the following is TRUE for this scenerio? Select the best option.
14 / 45
Which of the following statements are True regarding finite element analysis? Choose the two best possible options.
15 / 45
In Ansys Mechanical, when analyzing pressure vessels, in order to determine the membrane and bending stresses, we need to use _____ . Select the best option that completes the statement.
16 / 45
In Ansys Mechanical, if the model is observed to have stress singularities, which of the following statements are TRUE when Adaptive Convergence is used? Select the best two options
17 / 45
A(n) _____, when applied to the faces lying on the symmetry plane, gives the same results as a Symmetry Region for 3D solid bodies. Select the option that best completes the sentence.
18 / 45
In a finite element analysis, if we want to include inertial loads for our simulation which of the following material property needs to be added in addition to Elastic modulus and Poisson's ratio? Select the best option.
19 / 45
What is the use of Yield and Ultimate Strength of a material in Engineering Data?
20 / 45
In a finite element analysis, Remote Points can be used to approximate behaviour and kinematics of scoped geometry through the use of a single point. Up to how many degrees of freedom (DOF) does a Remote Point have? Select the best option.
21 / 45
In Finite Element Analysis, the element has _____ as the unknown quantity that is solved for at all the nodes. Select the best option that completes the statement.
22 / 45
In Ansys Mechanical, contacts between parts are automatically detected within a tolerance and are assigned _____ type by default. Select the best option that completes the statement.
23 / 45
Which of the following options may cause artificially high stresses in a 3D mesh? Choose the three best possible options.
24 / 45
Directional deformation results are plotted in Ansys Mechanical with default settings. Which of the following two statements are correct regarding them? Select the two best options.
25 / 45
Which of the following Supports should NOT be used for Large Deflection analyses?
26 / 45
In Ansys Mechanical, small discrepancies can be observed between the mass reported in the solver output and the mass value mentioned in the Geometry Properties of the part because of various reasons? Select the two best options.
27 / 45
Consider a hollow cylinder of thickness 10mm whose inner and outer radius has been parameterized as P1 and P2 respectively. To maintain constant thickness of the hollow cylinder, the expression for outer radius will be:
28 / 45
In Ansys Mechanical, which of the following options are TRUE regarding Weak Springs? Select the two best options.
29 / 45
Stress is a _____ order tensor with _____ components.
30 / 45
Consider a case where a 3D solid body is first meshed with quadratic hexahedral elements, then meshed with quadratic tetrahedral elements of similar mesh density. How would results compare between the two cases? Select the 3 best options.
31 / 45
Identify the False statement from the following options? Review all options and select the best one that is not true.
32 / 45
In Ansys Mechanical, when a "body-to-ground" Joint is inserted, which of the following statement holds true? Select the best option.
33 / 45
Things to remember when using Shared Topology are ______. Select the 2 best options.
34 / 45
In Ansys Mechanical, when using Remote Points, which of the following considerations are important? Select the 2 best options.
35 / 45
In Ansys Mechanical, which of the following coordinate system needs to be selected so that the axial, circumferential, and radial displacements can be reviewed after solving? Select the best option.
36 / 45
Which statement concerning Cylindrical Supports in Mechanical is correct? Select the best option.
37 / 45
If the user wants to obtain accurate surface stresses, which of the following stiffness behavior is best suited when using the Surface Coating feature?
38 / 45
In a simulation, there are certain geometric details that can be excluded or modified to reduce meshing complexity and solution time while not affecting the outcome of the analysis. Select the two best options that are actions that match this statement.
39 / 45
In the case of pressure vessels, _____ stresses are the average stresses along the thickness of the body whereas, the _____ stresses are linearly varying stresses through the thickness of the body. Select the best option containing the two missing words in correct order that completes the statement.
40 / 45
In which of the following contact formulations is the displacements between contact bodies tied internally with constraint equations?
41 / 45
Which of the following 2D Analyses are correctly matched with their Practical Application? Select the two best options.
42 / 45
Which of the following settings helps to control the automatic contact generation? Select the 2 best options.
43 / 45
Consider an model assembly with multiple parts. If we turn on weak springs, which of the following statements are TRUE? Select the best three options.
44 / 45
Consider a situation where a Symmetry Region is utilized in a model, and a Remote Point lies on the plane of symmetry. Which type of Remote Point behavior is not supported on the plane of a Symmetry Region? Select the best option.
45 / 45
To evaluate if a glass sheet of unifrom cross section has failed in a compression test, which of the following Stress Tool would be the most appropriate?
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