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1、General Design of Mechanical EngineeringLEE, Chul-HeeDepartment of Mechanical EngineeringINHA UniversityCopyright 2010, Chul-Hee LEE1.Review of the former knowledge.2.Interface realization.3.Stamping machine simulation. How does a figure simulation begin, how to control the simulation.Lecture Struct
2、ureLecture Structure1.Open up Adams, create a new model with the model name as exercise_1.2.Set the gravity to no gravity.3.Units set to MKSThen build up4.Setting the work grid with the size: 1000mm*1000mm spacing : 10mm*10mm. Change the axes color to red.5.Change the units to MMKS 6.Add gravity in
3、-y direction with the value -9806.65 Pause. In-class exercise :In-class exercise :Here is a big problem in the figure, why the gravity symbol is not at the origin of the grid.Is there any change of the location of gravity.Good QuestionGood QuestionGravity here is just a symbol, it has no meaning of
4、the location. When you define a part in Adams, whatever it is complex, it will have the gravity at the center automatically. And also you can set the location by yourself. But there wont be gravity symbol anymore. Here the symbol is the sum all nominal of the gravity.InterfaceInterfaceThe Interface
5、of the Adams is like this, this is the simple vision which contains the main body and the main toolbox.If we do some thing as last week it will change to This.We can see the coordinates box, command window, Message window appear.Also if you want to change grid rapidly due to you work, you can keep i
6、t on.The first Section of main tool box is the operation section as I named. You can find every drawing and analysis buttons here.It includes tool, geometry, measure, undo, constraints, simulation, color, motion, animation, function operation, force, post-processing.Main toolboxMain toolboxThe secon
7、d section of tool box is the view control or view adjustment part.It can includes 3part too.1.View control.2.View angle.3.Screen displayMain toolbox Main toolbox Adjust your modal fit to the screen. “F”Rotating your modal. “R”Transform your modal. “T”Dynamic zoom your modal. “Z”These are most common
8、 buttons.Zoom out a certain area. Put one area as the center of your screen.Main ToolboxMain ToolboxChange the background colorDisplay the triadWindows layoutDisplay the gridChange the projection, orthographic or perspectiveChange the line or solid partDisplay the icons.Main ToolboxMain ToolboxHow t
9、o import a .cmd file.In Adams, .cmd file is modal command file, it only includes the command of drawing and the real figure, it can contain force and constraints, but it doesnt includes any simulation results.That means .cmd file just need you to push the simulation button.Stamping machineStamping m
10、achineOpen up Adams/ViewChoose import a file.Then in the below box you should set the document of .cmd file.Then confirmIn the File to read , you must find your .cmd file out. Then OK.Stamping machineStamping machineStamping machineStamping machine1 Change the Grid button2 Change the triad button3 C
11、hange the windows layout into 14 Change the render button5 Set the view orientation to front Stamping machineStamping machineThis is an example for stepped development of Adams. You can see there is a stamper button in the menu. It is special program for the stamper machine analysis.Stamping machine
12、Stamping machineSelect setting up model Then the stamper-steup dialog box appears.Use the arrow buttons.The buttons shift the location of the top of the control-link upward and downward 3mm at a timeThe parts connected to the control-link are parameterized in such a way as to move the appropriate am
13、ount automatically. Stamping machineStamping machineNow Simulate the modal.SimulationSimulation Simulation in Adams is one of the most important things. Adams will upload the calculation result at every time internal. So the simulation time and step is very important . Stamping machineStamping machi
14、nePlease set the End time as 3And steps as 1000We can see a simulation results now.This is a step developed program, so in the stamper button, there is also a simulate button.Stamping machineStamping machineNow the animation is used to see the process you have simulated. There is playing control but
15、tons in the section you can change it one step by one step to see what is happen during the simulation. Stamping machineStamping machineThere is also a animation result in the step. Select the investigate results. To see the motion of simulation, select animate results. To plot the vertical travel o
16、f the stamper with respect to the parcel tops versus time as calculated from your last simulation, select measure stamp height above parcels.Stamping machineStamping machineNow please find out the correct height:Repeat the steps on the previous page until you can identify the control_link length at
17、which the stamp makes contact with the parcels, using 3mm increments.Select stamperSelect Setting up modelChange the control_Link TipDo the simulation.Stamping machineStamping machineOptimization In The optimization study.Please select the optimization in the stamper_simulate.Change the penetration to 4mm And model update to never.Then apply. Stamping machineStamping machine
