3. Fracture mechanisms in real materials Fracture of crystals: Different fracture mechanisms
3 2 Mechanisms
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Transcript of 3 2 Mechanisms
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Creating Mechanism
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Robot movements can be defined through the manipulation of inverse kinematic simulations, but this is not the case with a mechanism.Mechanism movements can only be defined through the manipulation of individual joint values. While with a Robot, we can also define through Cartesian position.
(So for a mechanism, we do not need to import a robot, we can make our own cad objects)
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Make a cylinder with I command
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Change name to - Top
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Make another cylinder with I command
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This is what we get
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Make a box with I command
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Change the color of this box to red, rename part and the bottom cylinder = base>>part is child and attach to top as parent
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Part = child and Top = parent
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Select base>>create>>mechanism>>auxiliary axis - 1
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Now create joint
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Base is parent>>top is child
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A rotational joint is also created
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View Pendent
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By moving the pendent, the top is moving.
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Another position (When we do not have a robot, then we have to make a mechanism).
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Lets learn GP`s >> go to extreme position
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Learn GP>>no path>>ok
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Six GP`s have been made
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Lets create a path>> path>>right click>>new path
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Name Path1>>manual>>ok
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In CAD View>>Drag the GP`s into the Path, they will get copied
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Right click base>>simulate (It becomes active)
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Simulation>>play simulation
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The table top starts moving>> it goes to starting position>>then to each GP.
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Lets make animation>>simulate>>Simulate options (we can now play it any where)
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This dialog box opens
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Click >>create animation, optimise AVI creation, actual size
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Animation>>select name>>Active animation
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Simulate>>play simulation>>In compression box Microsoft video1>>ok (when the simulation is running, it is actually being recorded also)
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Simulation>>play animation
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Save as the file at a different location
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Select a GP in path>>right click>>properties>change speed in %
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Click no or yes, if you want the changes to come in animation
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Now again play the simulation
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Path >> new path
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Path2>> Automatic generic
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This dialog box opens
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This works with a robot