MAE 1351 EXAM 1

MAE 1351 EXAM 1

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...

• Select a plain line from the sketch to use as an axis
• Make an axis in the sketch using a construction line
• Use reference geometry to make an axis
• 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 no longer effective

Green Engineering - ✔✔The process by which environmental and life cycle considerations are examined from the outset in design

Weighted Decision Table - ✔✔A matrix used to weigh design options to determine the best possible design characteristics

Mass Properties Analysis - ✔✔A computer-generated document that gives the mechanical properties of a 3-D solid model

As-built drawings - ✔✔The marked-up drawings from a civil engineering project that show any modifications implemented in the field during construction.

Engineering - ✔✔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 - ✔✔n. An original manifestation of a device or method created for performing one or more useful functions

• The process of creating a design (noun)

Drawings - ✔✔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 - ✔✔In engineering, a collection of tasks that must be performed to create, operate, or retire a system or device