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Table 3 Convergence of collapse multipliers of clamped rhombic plate subjected to uniform pressure versus various DOFs

From: RETRACTED ARTICLE: A limit analysis of Mindlin plates using the cell-based smoothed triangular element CS-MIN3 and second-order cone programming (SOCP)

Skewness angle α Method Degrees of freedom Reference solution [38] with 867 DOFs
   75 146 243 363 507  
30 CS-MIN3 20.5975 13.109 11.0884 10.2647 9.8309 9.852
MIN3 36.1594 21.4943 16.6904 14.0769 12.4709
45 CS-MIN3 23.8074 14.2608 12.3219 11.4793 11.0211 10.847
MIN3 46.298 24.0417 17.946 14.7981 13.0246
60 CS-MIN3 26.561 15.3363 13.2884 12.3919 11.8979 11.641
MIN3 55.5217 25.6668 18.3164 15.0692 13.3652
75 CS-MIN3 28.4641 16.2358 13.9159 12.9635 12.438 12.143
MIN3 62.9974 26.2878 18.2042 15.0939 13.5819
90 CS-MIN3 29.0137 16.9008 14.2239 13.1852 12.6364 12.314
  MIN3 67.2856 25.8273 17.7147 14.8945 13.5918  
  1. Basic load p = M p /R 2.