nurbfeap: large number of nodes per side?

[bharathn]

Dear all, do any of you have experience in having a large number of nurbs control points that define a side? I am having some trouble with this.

I get the following error.
" *ERROR* in NBLKEL: Block =    2 Side =    0 has inconsistent knot vector
         Knot =    4
"

The side code snippet is here.

Code: [Select]

knots
knot 4 48  0.000000E+00  0.000000E+00  0.000000E+00  2.500000E-02  5.000000E-02  7.500000E-02  1.000000E-01  1.250000E-01  1.500000E-01  1.750000E-01  2.000000E-01  2.250000E-01  2.500000E-01 
2.500000E-01  2.750000E-01  3.000000E-01  3.250000E-01  3.500000E-01  3.750000E-01  4.000000E-01  4.250000E-01  4.500000E-01  4.750000E-01  5.000000E-01  5.000000E-01  5.250000E-01  5.500000E-01  5.750000E-01  6.000000E-01 
6.250000E-01  6.500000E-01  6.750000E-01  7.000000E-01  7.250000E-01  7.500000E-01  7.500000E-01  7.750000E-01  8.000000E-01  8.250000E-01  8.500000E-01  8.750000E-01  9.000000E-01  9.250000E-01  9.500000E-01  9.750000E-01 
1.000000E+00  1.000000E+00  1.000000E+00 
knot 5 25  0.000000E+00  0.000000E+00  0.000000E+00  5.000000E-02  1.000000E-01  1.500000E-01  2.000000E-01  2.500000E-01  3.000000E-01  3.500000E-01  4.000000E-01  4.500000E-01  5.000000E-01 
5.500000E-01  6.000000E-01  6.500000E-01  7.000000E-01  7.500000E-01  8.000000E-01  8.500000E-01  9.000000E-01  9.500000E-01  1.000000E+00  1.000000E+00  1.000000E+00 

NSIDES
   side 991 45 4 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983
2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999
3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015
   side 992 45 4 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028
3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044
3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060
I have tried moving the side numbers to the next line in order to keep with the 16 items on a line rule. It gives me this error despite this. Note that I am doing this for my pressure element which spans the entire inner surface of a cylinder. I have attached the file along with this post.

Regards,
Bharath

[resammc]

Your first line for "side 991" (and "side 992") has 17 entries. You should rearrange the lines.

I have models with 200 control points on each side and they work without any problems.

[bharathn]

Oh great, thanks! So the first keyword also counts? I thought it was only numbers. Thank you so much!

[resammc]

Yes, I think every entry is counted.