MAE 1351 EXAM 1 with correct answers

The engineering design process follows the same steps as the scientific discovery process, or scientific method. True? No; there are major differences The term "IPS" in SolidWorks refers to... measurement units To create an extrusion, I must first draw a sketch on a surface. True? Yes, but the surface must be flat What are the fundamental types of sketch constraints? Geometrical and dimensional To clock a hexagonal feature so that it rests horizontally on one side, I would... Apply a horizontal constraint To create a revolved feature, the profile and the axis of the revolution must be what? Coplanar To create a solid of revolution, I must... A) Select a plain line from the sketch to use as an axis B) Make an axis in the sketch using a construction line C) Use reference geometry to make an axis D) Any of the above will work D) Any of the above will work I have a distance in my sketch preceded by a "sigma" symbol. This means... It is a dimension driven by a parametric formula Graphical User Interface (GUI) The format of information on the visual display of a computer, giving its user control of the input, output, and editing of the information primary modeling planes, principal viewing planes, or datum planes The planes representing the XY-, XZ-, and YZ-planes in a Cartesian coordinate system. sketches Collection of 2-D entities sketching editor A software tool used to create and edit sketches. Profile A planar sketch that is used to create a solid Extrusion A solid that is bounded by the surfaces swept out in space by a planar profile as it is pulled along a path perpendicular to the plane of the profile Revolved solid a solid formed when a profile curve is rotated about an axis Constraints Geometric relationships, dimensions, or equations that control the size, shape, and/or orientation of entities in a sketch or solid model Geometrical Constraints Definitions used to control the shape of a profile sketch through geometric relationships Dimensional Constraints Measurements used to control the size or position of entities in a sketch. Algebraic Constraints Constraint that define the value of a selected variable as the result of an algebraic expression containing other variables from the solid model. Variational techniques Modeling techniques in which algebraic expressions or equations that express relationships between a number of variables and constants, any one of which can be calculated when all of the others are known. Parametric techniques Modeling techniques where all driven dimensions in algebraic expressions must be known for the value of the dependent variables to be calculated. Driven Dimension A variable connected to an algebraic constraint that can be modified only by user changes to the driving dimensions. Ground Constraint A constraint usually applied to a new sketch to fix the location of the sketch in space. Regeneration The process of updating the profile or part to show its new shape after constraints are added or changed Protrusion A feature created by the addition of solid volume to a model Cut A feature created by the removal of solid volume from a model Sketching Plane A plane where 2-D sketches and profiles can be created. Blind Extrusion An extrusion made to a specified length in a selected direction. Extrude to the next surface An extrusion begins at the profile and the protrusion or cut stops when it intersects the next surface encountered Extrude to a selected surface an extrusion where the protrusion or cut begins on the sketching plane, and stops when it intersects a selected surface Extrude through all An extrusion that begins on the sketching plane and protrudes or cuts through all portions of the solid model that it encounters. Double-sided extrusion A solid formed by the extrusion of a profile in both directions from its sketching plane Base Feature The first feature created for a part, usually a protrusion Form Feature A recognizable area on a solid model that has a specific function Rounds Smooth radius transitions of external edges created by two intersecting surfaces and tangent to both intersecting surfaces Fillets Smooth transitions of the internal edge created by two intersecting surfaces and tangent to both intersecting surfaces Chamfers Angled cut transitions between two intersecting surfaces Holes A cut feature added to a model that will often receive a fastener for system assembly Shelling Removing most of the interior volume of a solid model, leaving a relatively thin wall of material that closely conforms to the outer surfaces of the original model Ribs Constant thickness protrusions that extend from the surface of a part and are used to strengthen or stiffen the part Webs Small, thin protrusions that connect two or more thicker regions on a part Cosmetic Features Features that modify the appearance of the surface but do not alter the size or shape of the object. Datum Geometries Geometric entities such as points, axes, and planes that do not actually exist on real parts, but are used to help locate and define other features. Feature array A method for making additional features by placing copies of a master feature on the model at a specified equal spacing. Master feature A feature or collection of features that is to be copied for placement at other locations in a model Mirrored feature A feature that is created as a mirror image of a master feature Blend A solid formed by a smooth transition between two or more profiles Swept Features A solid that is bound by the surfaces swept out in space as a profile is pulled along a path Path The specified curve on which a profile is placed to create a swept solid Driving Dimension A variable used in an algebraic constraint to control the values of another (driven) dimension. Problem Identification The first stage in the design process where the need for a product or a product modification is clearly defined life cycle The amount of time a product will be used before it is