how to plot a hexagonal finite element and its shape function?

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JITHA K R 2017-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/362947-how-to-plot-a-hexagonal-finite-element-and-its-shape-function

评论： JITHA K R 2017-10-24

<p><&lt;/matlabcentral/answers/uploaded_files/92040/Screenshot%20(1).png &lt;/matlabcentral/answers/uploaded_files/92040/Screenshot%20(1).png>>
shape function is given by:
N1 = -0.6429−

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回答（1 个）

KSSV 2017-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/362947-how-to-plot-a-hexagonal-finite-element-and-its-shape-function#answer_287448

在 MATLAB Online 中打开

n = 10 ;
eta = linspace(0,1,n) ;
neta = linspace(0,1,n) ;
[X,Y] = meshgrid(eta,neta) ;
N = -0.6429-X+1.1429*X.^2+0.8571*Y.^2+1.5*X.^3+0.8333*X.*Y.^2-1.5238*X.^2.*Y.^2 ;
surf(X,Y,N)

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JITHA K R 2017-10-24

i wanted to plot hexagon on x y axis and then plot value of N1 at every node of hexagon.also it should give value of 1 at node 1 and all other nodes it should be zero.

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