What is the center of gravity for different shapes in blanking calculations?

AI Thread Summary
The discussion focuses on determining the center of gravity for specific shapes, particularly an arc and the periphery of a triangle, for use in blanking calculations. The center of gravity for these shapes can be evaluated using integral calculus, which is widely available in textbooks and online resources. For the triangle, the process involves calculating the center of gravity for each side and then finding a weighted average based on mass. This information is crucial for calculating the blank diameter and the center of pressure during the blanking process. Understanding these calculations is essential for accurate design and manufacturing in engineering applications.
vin300
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what is the centre of gravity of an arc(as opposed to sector) and that of the periphery of triangle(not the area of the triangle)? I'm supposed to use it for calculating blank diameter before drawing and for calculating centre of pressure during blanking.
 
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You can evaluate those shapes with the usual integral for the center of gravity (should be easy to find in any textbook, wikipedia or other web pages). For the triangle, it is easier: Calculate the position for each side, and calculate the weighted average (with mass as weight) of them afterwards.
 
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