ansys 14 part 2

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Exercise 2 Triangular Plate 1

Exercise 2

Triangular Plate

The triangular plate [1, 2] is made to

withstand a tensile force on each side face

[3]. The thickness of the plate is 10 mm.

Other dimensions are shown in the figure. In this exercise, we want to sketchthe plate on and then extrude

a thickness of 10 mm along Z-axis to

generate a 3D solid body.

2-1 About the Triangular Plate

40mm

30 mm

300 mm

2-2 Start up

[1] From Startmenu, launch

Workbench.

[2] Double-click tocreate a

system.

[3] Double-click tostart up

.

[1] The platehas threeplanes of

symmetry.

[2] Radii ofthe fillets

are 10 mm.

[3] Tensile forcesare applied on thethree side faces.

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2 Copyright by Huei-Huang Lee

[5] Selectmode.

[6] Click so

that you look at.

[4] Selectas length unit.Click .

[2] Click roughly

here to start apolyline.

[3] Click the secondpoint roughly here. Make

sure a (vertical)constraint appears before

clicking.

[4] Click the third point roughly

here. Make sure a (coincident)constraint appears before clicking.

is an importantfeature of .

[5] Right-click anywhereto open the context menuand select to close the polyline and

end the tool.[1] From

toolbox, select.

2-3 Draw a Triangle on

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Before we proceed further, let's look into some useful tools for 2D graphics controls [1-10]; feel free to use these

tools whenever needed. Here, the tools are numbered according to roughly their frequency of use. Click to turnon a tool; click again to turn it off.

2-4 Make the Triangle Regular

[1] Fromtoolbox, select

tool.

[2] Click these twosegments one after the

other to make theirlengths equal.

[3] Click these twosegments one after the

other to make theirlengths equal.

[9] . Click this

tool to undo what you'vejust done. Multiple

undo's are allowed. Thistool is available only in

mode.

[10] . Click thistool to redo what you'vejust undone. This tool is

available only in mode.

[2] .Click this tool to fitthe entire sketch in

the graphic area.

[4] .Click to turn on/off

this mode. When on,you can click-and-draga box on the graphicarea to enlarge thatportion of graphics.

[5] . Click to turn on/off this mode. When on, youcan click-and-drag upward or

downward on the graphic areato zoom in or out.

[1] . Click

this tool to makecurrent sketching plane

rotate toward you.

[6] . Click this

tool to go toprevious view.

[7] . Click thistool to go to next

view.

[8] These tools workfor either or mode.

[3] . Click to turnon/off this mode. When on,

you can click-and-drag on thegraphic area to move the

sketch.

2-5 2D Graphics Controls

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2-7 Draw an Arc

[2] Select.

[6] Select and then

move thedimensions as

you like (2.1-11).

[3] Click the vertex on theleft and the vertical line on the

right (before clicking, makesure the cursor indicates thatthe point or edge has been

"snapped,") and then move themouse downward to createthis dimension. (The value 300

will be typed in step [5].)

[4] Click the vertex on the leftand the vertical axis, and thenmove the mouse downward to

create this dimension. Note thatall the segments turn to blue,

indicating they are well definednow. (The value 200 will be

typed in step [5].)

[5] In , type300 (mm) and 200 (mm) forthe dimensions just created.

Click (2.2-5[2]).

[2] Click thisvertex as the

arc center.Make sure a

(point)constraint

appears beforeclicking.

[3] Click the second pointroughly here. Make sure a

(coincident) constraintappears before clicking.

[4] Click thethird pointhere. Makesure a (coincident)constraint

appears beforeclicking.

[1] From

toolbox, select.

2-6 Specify Dimensions

[1] In toolbox, click. Click to turn it

off and automatically turn on.For the rest of the book, we always

display values instead of names.

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2-8 Replicate the Arc

[2] Select thearc.

[4] Select this vertex aspaste handle. Make sure

a

appears beforeclicking. If you havedifficulty making

appear, see [7, 8].[1] From toolbox, select

. Type120 (degrees) for

. isequivalent to

+.

[7] Whenever you havedifficulty making

appear, click in thetoolbar. also can be setfrom the context

menu, see [8].

[3] Right-clickanywhere to open the

context menu andselect .

[8] also can be set fromthe context menu.

[6] Click this vertex topaste the arc. Make sure a

appears beforeclicking. If you havedifficulty making

appear, see [7, 8].

[5] Right-click-selectfrom the context menu.

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For instructional purpose, we chose to manually set the paste handle [3] on the vertex [4]. In this case, we actually

could have used plane origin as handle.

2-9 Trim Away Unwanted Segments

[10] Select this vertexto paste the arc. Make

sure a

appearsbefore clicking.

[9] Right-click-select in thecontext menu.

[11] Right-click-select in the

context menu to end tool.Alternatively, youmay press ESC to

end the tool.

[3] Click to trimunwanted segmentsas shown; totally 6

segments aretrimmed away.

[1] From

toolbox, select.

[2] Turn on

(2.1-7[2]).

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After impose dimension in [2], all

segments turn to blue, indicating

they are well defined now. Note

that we didn't specify the radii ofthe arcs; the radii of the arcs are

automatically calculated.

Constraint StatusNote that the arcs have a greenish-blue color, indicating they are not well defined yet (i.e., under-constrained). Other

color codes are: blue and black colors for well defined entities (i.e.,fixed in the space); red color for over-constrained

entities; gray to indicate an inconsistency.


.

[5] Select thehorizontal axis as

the line of

symmetry.

[4] Select.

[2] Select this segment andthe vertical segment

sequentially to make theirlengths equal.

[3] Select this segment andthe vertical segment

sequentially to make theirlengths equal.

[6] Select thelower and upper

arcs sequentially to

make themsymmetric.

[1] Select toolbox and leave

as default.

[2] Click the verticalsegment and move the

mouse rightward to

create this dimension.(The value 40 will be

typed in the next step.)

[3] Type 40 (mm)for the dimension

just created.

2-10 Impose Constraints

2-11 Specify Dimension for Side Faces

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2-12 Create Offset

[1] From toolbox, select

.[2] Sweep-select all the

segments (sweep each segmentwhile holding your left mouse

button down). When selected,the segments turn to yellow.

Sweep-select is also called paint-select.

[4] Right-click-select in thecontext menu.

[6] Right-click-select in the contextmenu, or press ESC,to close

tool.

[5] Click roughlyhere to place the

offset.

[3] Another way to selectmultiple entities is to switch

to , and then draw a box toselect all entities inside the box.

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2-13 Create Fillets

[1] In toolbox, select. Type 10

(mm) for .

[7] Fromtoolbox, select.

[8] Click the two left arcs andmove downward to create thisdimension. Note that all thesegments turn to blue now.

[9] Type 30(mm) for the

dimension justcreated.

[10] It is possible that somepoints become separate afterimposing the dimension. If so,

impose a constraint on them, see [11].

[11] If necessary,impose a

onthe separated

points.

[2] Click two segmentssequentially to create a fillet.Repeat this step to create theother two fillets. Note that

the fillets are in greenish-bluecolor, indicating they are only

weakly defined.

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2-14 Extrude to Create 3D Solid

[2] Click.

[3] Type 10 (mm) for. Note that

Sketch1 is automaticallyselected as the default

.

[4] Click.

[5] Click to turn off the display of

sketching plane.

[6] Click all plussigns (+) toexpand and

examine .

[1] Click the littlecyan sphere to

rotate the world to

an isometric view, abetter view.


.

[3] Dimensionsspecified in a

toolbox are usuallyregarded as "weak"

dimensions,meaning they maybe overridden byother constraintsor dimensions.

[5] Click one of the fillets tocreate this dimension. This

action turns a "weak"dimension to a "strong" one.

The fillets turn blue now.

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2-15 Save the Project and Exit Workbench

[2] Click . Type

"Triplate" as projectname.

[1] Pull-down-select toclose .

[3] Pull-down-select to

exit Workbench.

ansys 14 part 2

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