prob_06_11_03 - Problem 6.11-3 Given Starting with a square...

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Problem 6.11 -3 Given: Starting with a square four-node plane element two units on a side, create a triangle by moving node 3 so that nodes 2, 3, and 4 are collinear and uniformly spaced. Find: a) Sketch the resulting element and the four Gauss points of an order 2 rule, in the manner of Fig. 6.11-2 b) What is the numerical value of the Jacobian J at each node? Solution: a) b) The determinate of the Jacobian matrix is given by: J 1 4 1 η ( ) 1 ξ
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