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In dividing the elements a good practice may be to choose corner angles in the range of ____

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in Finite Element Method by (110k points)
In dividing the elements a good practice may be to choose corner angles in the range of ____

(a) 30-120°

(b) 90-180°

(c) 25-75°

(d) 45-180°

This question was addressed to me in an interview for internship.

My question comes from Two Dimensional Problem Modelling and Boundary Conditions topic in portion Two Dimensional Problems using Constant Strain Triangles of Finite Element Method

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Correct choice is (a) 30-120°

For explanation: The best elements are those that approach an equilateral triangular configuration. Such configurations are usually not possible. A good practice is to choose corner angle in the range of 30-120°.

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