Civil Engineering Association

Help me to find torsional constant for semi circle and right angle triangle. Provide any textbook reference.

you can use AXISVM lite edition that can be downloaded from here

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You can introduce the shapes you want and look for Ix.
here d=10cm

a=b=10cm

the formula for right angle triangle Civil Engineer's Reference Book: L S Blake (pg2/23) posted here:

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for semicircle the formula is here at page 48 chapter 2 in book FORMULAS FOR STRESS, STRAIN, AND STRUCTURAL MATRICES by Walter D Pilkey ed2 2005 posted here

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KRV_LT

andersen3