aarcela Posted November 14, 2007 Share Posted November 14, 2007 Dear kevin. Could you explain me about COG, I have a file with a basic mechanical piece and I evaluated its center of gravity and this coincide with my analytical results, also I can check in Menu Tools-Analysis, but using COG icon the system and result is different. Why? what is the new reference system or what happen?.... I attached the file. Estatica.ics Quote Link to comment Share on other sites More sharing options...
IronKevin Posted November 14, 2007 Share Posted November 14, 2007 By default, the COG display measures from the part's anchor. The Analysis command measures from the World Origin. In the Analysis dialog, if you select the "Selected shape local coordinate system" toggle, you will get the same results as the COG Display. Quote Link to comment Share on other sites More sharing options...
aarcela Posted November 14, 2007 Author Share Posted November 14, 2007 And what happen if I change the anchor's position, the result with COG icon will change too? Quote Link to comment Share on other sites More sharing options...
IronKevin Posted November 14, 2007 Share Posted November 14, 2007 The numerical values will update as the anchor moves. Quote Link to comment Share on other sites More sharing options...
Cary OConnor Posted November 17, 2007 Share Posted November 17, 2007 The Anchor represents the part/assembly local coordinate. So yes, if you move it the COG will change. Cary Quote Link to comment Share on other sites More sharing options...
aarcela Posted November 20, 2007 Author Share Posted November 20, 2007 (edited) The Anchor represents the part/assembly local coordinate. So yes, if you move it the COG will change. Cary 19612[/snapback] That is clear for me now, but if you review my file when acivate COG, you will see that the Coordinate System (local) is rotated or moved. any explanation about that. Edited November 20, 2007 by aarcela Quote Link to comment Share on other sites More sharing options...
IronKevin Posted November 20, 2007 Share Posted November 20, 2007 Alfredo, When you say your Local Coordinate System is rotated are you referring to the red, green and blue axis emanating from the COG center? If so, that is not a coordinate system but a graphical display of the mass moment of inertia. Quote Link to comment Share on other sites More sharing options...
aarcela Posted November 20, 2007 Author Share Posted November 20, 2007 Ok That's right. And... it depends to its mass, is possible change the orientation?, Does it have influence in the result of coordinates del COG (x, y, z)? Quote Link to comment Share on other sites More sharing options...
IronKevin Posted November 21, 2007 Share Posted November 21, 2007 Sorry, I'm not sure that I understand your question. Quote Link to comment Share on other sites More sharing options...
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