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Question 1. In linear elastic analysis, which equation defines the relationship between normal stress and normal strain? A) σ = ε / E B) σ = E · ε C) σ = ε · ν D) σ = E / ε Answer: B Explanation: Hooke’s law for isotropic materials states that normal stress σ equals Young’s modulus E multiplied by normal strain ε (σ = E·ε). Question 2. The factor of safety (FOS) for a component under tensile loading is calculated as: A) Yield strength ÷ Applied stress B) Applied stress ÷ Yield strength C) Ultimate strength ÷ Applied stress D) Applied stress ÷ Ultimate strength Answer: A Explanation: FOS = material strength (often yield strength for ductile materials) divided by the maximum calculated stress. Question 3. Which of the following is NOT a degree of freedom for a 3-D solid tetrahedral element? A) Translational in X B) Rotational about Y C) Translational in Z D) None of the above – all are DOFs Answer: B Explanation: Solid elements have only translational DOFs (X, Y, Z) at each node; rotations are not degrees of freedom for solid elements. Question 4. In the h-method of mesh refinement, what is being altered?
A) Polynomial order of shape functions B) Number of elements (mesh density) C) Material properties D) Boundary condition type Answer: B Explanation: The h-method refines the mesh by decreasing element size, increasing the number of elements. Question 5. Which SOLIDWORKS Simulation element type is most appropriate for analyzing a thin sheet metal bracket? A) Solid 10-node tetrahedron B) Beam element C) Shell triangular element D) Rigid body element Answer: C Explanation: Shell elements efficiently model thin structures where through-thickness stresses are negligible. Question 6. Poisson’s ratio (ν) relates which pair of strain components? A) Axial strain to shear strain B) Axial strain to transverse strain C) Shear strain to volumetric strain D) Volumetric strain to axial strain Answer: B Explanation: ν = – (lateral strain) / (axial strain); it describes the contraction perpendicular to an applied tensile load. Question 7. When applying a remote load in SOLIDWORKS Simulation, the load is assumed to act: A) Directly on a face’s centroid B) Over the entire surface area uniformly
Answer: B Explanation: The Jacobian ratio measures element distortion; values near 1 indicate good quality, while values far from 1 signal poor shape. Question 11. The von Mises stress criterion is primarily used for: A) Predicting failure in brittle materials B) Evaluating shear stress only C) Assessing yielding in ductile materials D) Calculating thermal stresses Answer: C Explanation: Von Mises stress combines the three principal stresses into an equivalent stress used to predict yielding in ductile materials. Question 12. Which SOLIDWORKS Simulation unit system would you select to work with pound-force and inches? A) SI (kg, m, N) B) US Customary (lb-force, in) C) Metric (N, mm) D) International (kN, mm) Answer: B Explanation: US Customary uses pound-force for loads and inches for dimensions. Question 13. In a static linear analysis, which assumption is NOT made? A) Material behavior is linear elastic B) Loads are applied slowly and remain constant C) Large deformations may significantly change geometry D) Small displacement relative to overall dimensions Answer: C Explanation: Linear static analysis assumes small deformations; large deformations would require a nonlinear approach.
Question 14. When assigning a material from the SOLIDWORKS library, which property is NOT automatically transferred to the simulation model? A) Density B) Elastic modulus C) Surface roughness D) Poisson’s ratio Answer: C Explanation: Surface roughness is a manufacturing attribute, not a material property used in FEA. Question 15. A beam element can directly capture which of the following load types? A) Distributed pressure on a surface B) Axial force, shear force, and bending moment C) Thermal expansion only D) Fluid pressure on a cavity Answer: B Explanation: Beam elements are formulated to handle axial, shear, and bending loads. Question 16. Which type of fixture would you apply to a cylindrical face to prevent rotation about its axis while allowing axial translation? A) Fixed Geometry B) Symmetry C) Cylindrical (Normal) D) Roller Answer: C Explanation: A cylindrical (normal) fixture restrains radial and rotational DOFs but permits axial translation. Question 17. In SOLIDWORKS Simulation, the “Local Mesh Control” feature is most useful for:
C) Factor of Safety plot D) Temperature plot Answer: C Explanation: The FOS plot shows the ratio of material strength to computed stress; values below 1 indicate potential yielding. Question 21. In a mixed-mesh model containing both solid and shell elements, the transition between the two is handled by: A. Converting shells to solids automatically B. Using a “Shell-to-Solid” connector at the interface C. Defining a contact set between the two meshes D. No special treatment; SOLIDWORKS handles it automatically Answer: C Explanation: Contact sets define interaction between different element types, ensuring load transfer across the interface. Question 22. Which of the following statements about Young’s modulus is correct? A) It relates shear stress to shear strain B) It is the slope of the stress-strain curve in the plastic region C) It is independent of temperature for all materials D) It defines stiffness in the linear elastic region Answer: D Explanation: Young’s modulus (E) is the proportionality constant between normal stress and strain in the linear elastic portion of the curve. Question 23. When a static study shows a stress singularity at a point, the most appropriate corrective action is: A) Increase the load magnitude B) Refine the mesh locally until stress stabilizes C) Apply a larger safety factor globally D) Change the material to a higher strength alloy
Answer: B Explanation: Stress singularities arise from geometric discontinuities; refining the mesh can reduce artificial stress spikes, but the singularity may persist if the geometry is unrealistic. Question 24. The “Symmetry” fixture in SOLIDWORKS Simulation is used to: A) Apply a fixed constraint on a selected face B) Mirror the model geometry for analysis C. Impose a plane of symmetry, allowing the model to deform freely parallel to the plane D. Restrict all rotations about the symmetry plane Answer: C Explanation: Symmetry restraints allow movement parallel to the plane while preventing displacement normal to it, effectively modeling half the geometry. Question 25. Which of the following is NOT a typical output from the “Probe” tool? A) Nodal displacement magnitude B) Reaction force at a fixture C) Stress value at a specific location D) Mesh element type Answer: D Explanation: The Probe tool extracts results (displacements, stresses, etc.) at points; it does not report element type. Question 26. In SOLIDWORKS Simulation, the default contact type for a global contact set is: A) Frictionless B) Bonded C) No Penetration D) Allow Penetration Answer: B
Question 30. In a static linear analysis, the stiffness matrix is: A) Dependent on load magnitude B) Non-symmetric for isotropic materials C) Linear with respect to displacements D. Varying with each iteration because of geometric non-linearity Answer: C Explanation: For linear elastic analysis, the stiffness matrix relates forces linearly to displacements and does not change with load magnitude. Question 31. The “Centrifugal” load in SOLIDWORKS Simulation is applied as: A) A pressure acting outward on all surfaces B) A body force proportional to mass and the square of angular velocity C) A torque about the rotation axis only D) A uniform temperature rise due to rotation Answer: B Explanation: Centrifugal load is a body force equal to ρ·r·ω², acting radially outward on each mass element. Question 32. Which of the following best describes a “Rigid Body” in a simulation study? A) An element that deforms according to material properties B) A component that transmits loads without any deformation C. A shell element with infinite stiffness D. A beam element with zero bending stiffness Answer: B Explanation: Rigid bodies are assumed to have infinite stiffness; they translate and rotate but do not deform. Question 33. When you enable “Curvature-Based Mesh” globally, the solver: A) Refines mesh uniformly across the model B. Increases element size in highly curved regions
C) Refines mesh where surface curvature is high to capture stress gradients D) Converts all solid elements to shell elements Answer: C Explanation: Curvature-based meshing automatically refines the mesh in regions of high curvature to improve accuracy. Question 34. For a material with Poisson’s ratio ν = 0.5, the material is considered: A) Perfectly compressible B) Incompressible (volume-preserving) C) Brittle D) Highly ductile with low stiffness Answer: B Explanation: ν = 0.5 indicates that lateral expansion exactly compensates axial compression, resulting in no volumetric change (incompressible). Question 35. In a static study, the reaction force reported at a fixed fixture is: A) The external load applied to the model B) The internal force required to maintain equilibrium at that fixture C) Always equal to zero because the fixture is fixed D. The sum of all loads minus the weight of the model Answer: B Explanation: Reaction forces are the forces the fixture must exert on the model to satisfy equilibrium under applied loads. Question 36. Which of the following is a valid reason to use a “Beam” element instead of a “Solid” element for a long, slender member? A) Beam elements capture stress concentrations better than solids B) Beam elements reduce computational cost while still representing axial, shear, and bending behavior C) Beam elements allow for temperature-dependent material properties automatically
Explanation: Pressure loads act normal to the surface, following the local surface normal at each location. Question 40. Which of the following mesh quality metrics indicates that an element may produce inaccurate results due to distortion? A) Jacobian ratio > 0. B) Aspect ratio close to 1 C. Jacobian ratio < 0. D. Minimum edge length greater than element height Answer: C Explanation: Jacobian ratios far from 1 (especially <0.1) signal poor element shape and potential numerical errors. Question 41. The primary purpose of the “Factor of Safety Wizard” in SOLIDWORKS Simulation is to: A) Automatically adjust mesh density until a target FOS is achieved B) Convert stress results into safety factor values based on selected material strength criteria C. Generate a report of all applied loads and fixtures D. Change material properties to meet a desired safety factor Answer: B Explanation: The wizard transforms stress results into safety factor plots using user-specified yield or ultimate strength values. Question 42. Which loading case would you use to simulate the effect of a rotating shaft on a mounted bearing? A) Uniform pressure on the bearing surface B) Gravity load only C) Centrifugal body force applied to the shaft geometry D. Remote torque applied at the shaft end Answer: C Explanation: The rotating shaft experiences centrifugal forces proportional to its mass and angular speed, affecting the bearing.
Question 43. In SOLIDWORKS Simulation, “Mesh Control” can be applied to: A) Only the entire model (global) B) Individual faces, edges, or vertices for local refinement C) Only to shell elements D. Only after the solve is completed Answer: B Explanation: Local mesh controls allow targeted refinement of specific geometric features. Question 44. When a static study shows a maximum von Mises stress well below the material’s yield strength, the design is: A) Guaranteed to fail due to fatigue B) Likely safe under the given loading, assuming no other failure modes C. Unsafe because the factor of safety is too high D. Inconclusive without a thermal analysis Answer: B Explanation: If calculated stress is below yield and other criteria (e.g., buckling, fatigue) are not violated, the design is considered safe for that load case. Question 45. Which of the following is a correct statement about “Bonded” contact in simulation? A) It permits separation under tensile loads B) It enforces continuity of both normal and shear stresses across the interface C) It only transmits normal forces, not shear D. It requires a friction coefficient to be defined Answer: B Explanation: Bonded contact assumes perfect adhesion, transmitting both normal and shear stresses without slip or separation. Question 46. A “Shell” element in SOLIDWORKS Simulation requires which additional property compared to a solid element?
C) Pressure value and area D. Mass moment of inertia of the part Answer: B Explanation: Torque is applied about the axis of the cylindrical face; only the magnitude is needed. Question 50. The “Section Cut” tool in post-processing is primarily used to: A) Reduce the number of elements in the model B) Visualize internal stress or strain fields by slicing through the geometry C. Change the material of a selected region D. Apply additional loads after the solve Answer: B Explanation: Section cuts create a visual slice, exposing internal results that would otherwise be hidden. Question 51. In a static analysis, which of the following statements about “Linear Material Behavior” is true? A) The stress-strain curve is a straight line up to ultimate strength B) The material exhibits plastic deformation before failure C. The relationship between stress and strain is constant, defined by Young’s modulus, up to the yield point D. Material stiffness changes with applied load magnitude Answer: C Explanation: Linear material behavior assumes a constant modulus (E) and proportional stress-strain relationship until yielding. Question 52. Which of the following best describes the effect of increasing mesh density (h-refinement) on solution accuracy? A) Accuracy always decreases because of numerical round-off B) Accuracy generally improves, especially in regions with high stress gradients C. Accuracy is unaffected; only solve time changes D. Accuracy improves only for thermal analyses, not structural
Answer: B Explanation: Finer meshes capture gradients more accurately, reducing discretization error. Question 53. When assigning a “Thermal Expansion” coefficient to a material, the simulation will: A) Automatically apply a temperature load of 100 °C B. Adjust geometry based on temperature changes if a thermal load is defined C. Change the Young’s modulus proportionally D. Disable all mechanical loads Answer: B Explanation: The coefficient is used to compute thermal strain when temperature loads are present, causing deformation. Question 54. A “Pin” connector in an assembly will transmit which type of load? A) Axial tension only B) Bending moment only C. Shear forces and axial loads while allowing rotation about the pin axis D. All loads without any restriction Answer: C Explanation: Pins allow rotation about their axis, transmitting shear and axial forces but not resisting moment about the pin. Question 55. In a static study, the “Reaction Force” at a roller fixture is typically: A) Zero in the direction parallel to the roller surface B) Equal to the applied load magnitude C. Non-zero only in the direction normal to the roller surface D. Always equal to the weight of the part Answer: C Explanation: Rollers constrain motion normal to the surface, so reaction forces appear only in that direction.
A) The software cannot handle it B) The analysis assumes small displacements, making geometry changes negligible C. The material is assumed to be plastic D. Loads are time-varying Answer: B Explanation: Linear static analysis neglects geometric non-linearity, assuming deformations are small enough not to affect stiffness. Question 60. Which of the following statements about “Beam” elements’ cross-sectional properties is true? A) The solver automatically calculates the section’s moment of inertia from the geometry B. The user must manually input area, moment of inertia, and section modulus C) Beam elements do not require any cross-section data D. Cross-sectional properties are irrelevant for axial loading Answer: B Explanation: For beam elements, the user defines section properties (area, Ixx, Iyy, etc.) to capture bending and shear behavior. Question 61. The “Gravity” load vector in SOLIDWORKS Simulation defaults to which direction in the default coordinate system? A) Positive X B) Positive Y C. Positive Z D. Negative Y Answer: D Explanation: By default, gravity acts in the negative Y direction (downward) in SOLIDWORKS’ default orientation. Question 62. Which result is directly obtained from a “Strain Energy Density” plot? A) Amount of energy stored per unit volume due to deformation
B. Total kinetic energy of the model C. Reaction forces at fixtures D. Temperature distribution Answer: A Explanation: Strain energy density represents the energy stored in each volume element as a result of elastic deformation. Question 63. When using a “Fixed Geometry” fixture on a face, which of the following is true about the normal direction of that face? A) The face can still translate normal to itself B) The face is completely restrained; no translation or rotation in any direction C. The face can rotate about its normal axis D. Only the normal component of displacement is restrained Answer: B Explanation: Fixed Geometry fully restrains all translational and rotational DOFs at the selected geometry. Question 64. In SOLIDWORKS Simulation, the “Contact Set” option “Allow Penetration” is typically used for: A) Modeling welded joints B. Simulating clearance or gaps where parts may interpenetrate slightly without contact forces C. Enforcing frictional sliding D. Defining bonded contact with high stiffness Answer: B Explanation: Allow Penetration permits small interpenetration, useful for modeling clearance or loosely fitting parts where contact forces are negligible. Question 65. Which of the following best explains why a “Curvature-Based” mesh may produce a more accurate result than a uniform global mesh for a complex part? A) It automatically reduces the total number of elements
