MAE 1351 EXAM 1Questions and Answers

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The engineering design process follows the same steps as the scientific discovery process, or scientific method. True? - ANSWER No; there are major differences The term "IPS" in SolidWorks refers t... o... - ANSWER measurement units To create an extrusion, I must first draw a sketch on a surface. True? - ANSWER Yes, but the surface must be flat What are the fundamental types of sketch constraints? - ANSWER Geometrical and dimensional To clock a hexagonal feature so that it rests horizontally on one side, I would... - ANSWER Apply a horizontal constraint To create a revolved feature, the profile and the axis of the revolution must be what? - ANSWER 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 - ANSWER D) Any of the above will work I have a distance in my sketch preceded by a "sigma" symbol. This means... - ANSWER It is a dimension driven by a parametric formula Graphical User Interface (GUI) - ANSWER 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 - ANSWER The planes representing the XY-, XZ-, and YZ-planes in a Cartesian coordinate system. sketches - ANSWER Collection of 2-D entities sketching editor - ANSWER A software tool used to create and edit sketches. Profile - ANSWER A planar sketch that is used to create a solid Extrusion - ANSWER 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 - ANSWER a solid formed when a profile curve is rotated about an axis Constraints - ANSWER Geometric relationships, dimensions, or equations that control the size, shape, and/or orientation of entities in a sketch or solid model Geometrical Constraints - ANSWER Definitions used to control the shape of a profile sketch through geometric relationships Dimensional Constraints - ANSWER Measurements used to control the size or position of entities in a sketch. Algebraic Constraints - ANSWER 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 - ANSWER 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 - ANSWER Modeling techniques where all driven dimensions in algebraic expressions must be known for the value of the dependent variables to be calculated. Driven Dimension - ANSWER A variable connected to an algebraic constraint that can be modified only by user changes to the driving dimensions. Ground Constraint - ANSWER A constraint usually applied to a new sketch to fix the location of the sketch in space. Regeneration - ANSWER The process of updating the profile or part to show its new shape after constraints are added or changed Protrusion - ANSWER A feature created by the addition of solid volume to a model Cut - ANSWER A feature created by the removal of solid volume from a model Sketching Plane - ANSWER A plane where 2-D sketches and profiles can be created. Blind Extrusion - ANSWER An extrusion made to a specified length in a selected direction. Extrude to the next surface - ANSWER An extrusion begins at the profile and the protrusion or cut stops when it intersects the next surface encountered Extrude to a selected surface - ANSWER an extrusion where the protrusion or cut begins on the sketching plane, and stops when it intersects a selected surface Extrude through all - ANSWER 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 - ANSWER A solid formed by the extrusion of a profile in both directions from its sketching plane Base Feature - ANSWER The first feature created for a part, usually a protrusion Form Feature - ANSWER A recognizable area on a solid model that has a specific function Rounds - ANSWER Smooth radius transitions of external edges created by two intersecting surfaces and tangent to both intersecting surfaces Fillets - ANSWER Smooth transitions of the internal edge created by two intersecting surfaces and tangent to both intersecting surfaces Chamfers - ANSWER Angled cut transitions between two intersecting surfaces Holes - ANSWER A cut feature added to a model that will often receive a fastener for system assembly Shelling - ANSWER 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 - ANSWER Constant thickness protrusions that extend from the surface of a part and are used to strengthen or stiffen the part Webs - ANSWER Small, thin protrusions that connect two or more thicker regions on a part Cosmetic Features - ANSWER Features that modify the appearance of the surface but do not alter the size or shape of the object. Datum Geometries - ANSWER 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 - ANSWER A method for making additional features by placing copies of a master feature on the model at a specified equal spacing. Master feature - ANSWER A feature or collection of features that is to be copied for placement at other locations in a model Mirrored feature - ANSWER A feature that is created as a mirror image of a master feature Blend - ANSWER A solid formed by a smooth transition between two or more profiles Swept Features - ANSWER A solid that is bound by the surfaces swept out in space as a profile is pulled along a path Path - ANSWER The specified curve on which a profile is placed to create a swept solid Driving Dimension - ANSWER A variable used in an algebraic constraint to control the values of another (driven) dimension. Problem Identification - ANSWER The first stage in the design process where the need for a product or a product modification is clearly defined life cycle - ANSWER The amount of time a product will be used before it is no longer effective Green Engineering - ANSWER The process by which environmental and life cycle considerations are examined from the outset in design Weighted Decision Table - ANSWER A matrix used to weigh design options to determine the best possible design characteristics Mass Properties Analysis - ANSWER A computer-generated document that gives the mechanical properties of a 3-D solid model As-built drawings - ANSWER The marked-up drawings from a civil engineering project that show any modifications implemented in the field during construction. Engineering - ANSWER The profession in which knowledge of mathematical and natural sciences gained by study, experience, and practice is applied with judgement to develop and utilize economically the materials and forces of nature for the benefit of humanity Design - ANSWER n. An original manifestation of a device or method created for performing one or more useful functions v. The process of creating a design (noun) Drawings - ANSWER A collection of images and other detailed graphical specifications intended to represent physical objects or processes for the purpose of accurately re-creating those objects or processes Projects - ANSWER In engineering, a collection of tasks that must be performed to create, operate, or retire a system or device Systems - ANSWER A collection of parts, assemblies, structures, and processes that work together to perform one or more prescribed functions Descriptive Geometry - ANSWER A two-dimensional graphical construction technique used for geometric analysis of three-dimensional objects. Instruments - ANSWER In engineering drawing, mechanical devices used to aid in creating accurate and precise images. Parts - ANSWER A single object fabricated to perform one or more functions Assemblies - ANSWER A collection of parts that mate together to perform a specified function or functions Two-dimensional drawings - ANSWER Mathematical modeling or drawing where the appearance of parts, assemblies, or structures are represented by a collection of two-dimensional geometric shapes CAD - ANSWER Computer-aided drawing. The use of computer hardware and software for the purpose of creating, modifying, and storing engineering drawings in an electronic format Three-dimensional modeling - ANSWER Mathematical modeling where the appearance, volumetric, and inertial properties of parts, assemblies, or structures are created with the assistance of computers and display devices Solid Modeling - ANSWER Three-dimensional modeling of parts and assemblies, originally developed for physics and mechanical engineering use but presently used in all engineering disciplines. Image - ANSWER A collection of printed, displayed, or imagined patterns intended to represent real objects, data, or processes Visualization - ANSWER The ability to create and manipulate mental images of devices or processes Model - ANSWER A mathematical representation of an object or a device from which information about its function, appearance, or physical properties can be extracted Optimization - ANSWER Modification of shapes, sizes, and other variables to achieve the best performance based on predefined criteria. [Show More]

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