Issue 51

S. Merdaci et alii, Frattura ed Integrità Strutturale, 51 (2020) 199-214; DOI: 10.3221/IGF-ESIS.51.16 207 different values of coefficient of the porosity. Fig. 4 Shows that the deflection increases as α and P increases. For greater values of α, the differences in deflections may be more than double. Theories P w x  y  yz  xz  xy  CPT Ceramic 0.07722 1.97576 1.31718 0.15915 0.15915 0.70925 FSDPT( k =5/6 )[26] 0.07722 1.97576 1.31718 0.15916 0.15916 0.70925 SSDPT[27] 0.07769 1.98392 1.31508 0.18995 0.20359 0.70812 ESDPT[28] 0.07770 1.98428 1.31502 0.19090 0.20740 0.70809 HSDPT[29] 0.07709 1.97408 1.31761 0.15111 0.14874 0.70948 Present 0.07791 1.99432 1.31236 0.21206 0.23857 0.70666 CPT P=1 0.19586 0.93765 1.54787 0.19570 0.26880 0.83347 FSDPT( k =5/6 )[26] 0.19586 0.93765 1.54787 0.19570 0.26880 0.83347 SSDPT[27] 0.19610 0.94056 1.54745 0.20986 0.30894 0.83324 ESDPT[28] 0.19610 0.94070 1.54751 0.20974 0.31299 0.83327 HSDPT[29] 0.19577 0.93697 1.54798 0.19104 0.25827 0.83353 Present 0.19609 0.94370 1.54687 0.21637 0.33433 0.83293 CPT P=2 0.28509 1.36934 1.36210 0.19078 0.34892 0.73344 FSDPT( k =5/6 )[26] 0.28509 1.36934 1.36210 0.19078 0.34892 0.73344 SSDPT[27] 0.28514 1.37294 1.36172 0.19822 0.38854 0.73324 ESDPT[28] 0.28511 1.37311 1.36177 0.19739 0.39220 0.73326 HSDPT[29] 0.28502 1.36847 1.36220 0.18759 0.33768 0.73349 Present 0.28490 1.37662 1.36123 0.19888 0.40919 0.73297 CPT P=3 0.336721 1.61758 1.25527 0.17464 0.41003 0.67591 FSDPT( k =5/6 )[26] 0.33672 1.61758 1.25527 0.17464 0.41003 0.67591 SSDPT[27] 0.33666 1.62155 1.25475 0.17975 0.45234 0.67564 ESDPT[28] 0.33660 1.62171 1.25478 0.17864 0.45568 0.67565 HSDPT[29] 0.33667 1.61661 1.25541 0.17195 0.39739 0.67599 Present 0.33624 1.62552 1.25415 0.17844 0.47133 0.67531 CPT P=4 0.36538 1.75385 1.23316 0.15823 0.45817 0.66401 FSDPT( k =5/6 )[26] 0.36538 1.75385 1.23316 0.15823 0.45817 0.66401 SSDPT[27] 0.36527 1.75807 1.23249 0.16289 0.50554 0.66365 ESDPT[28] 0.36519 1.75823 1.23251 0.16173 0.50878 0.66366 HSDPT[29] 0.36532 1.75281 1.23333 0.15568 0.44369 0.66410 Present 0.36474 1.76229 1.23174 0.16129 0.52541 0.66325 CPT P=5 0.3818576 1.83097 1.24289 0.14497 0.49709 0.66925 FSDPT( k =5/6 )[26] 0.38186 1.83097 1.24289 0.14497 0.49709 0.66925 SSDPT[27] 0.38175 1.83541 1.24208 0.14989 0.55087 0.66881 ESDPT[28] 0.38166 1.83557 1.24209 0.14877 0.55423 0.66882 HSDPT[29] 0.38177 1.82984 1.24307 0.14228 0.48020 0.66935 Present 0.38116 1.83989 1.24120 0.14864 0.57337 0.66834 CPT Metal 0.41919 1.97576 1.31718 0.15916 0.15916 0.70925 FSDPT( k =5/6 )[26] 0.41919 1.97576 1.31718 0.15916 0.15916 0.70925 SSDPT[27] 0.42172 1.98392 1.31508 0.18995 0.20359 0.70812 ESDPT[28] 0.42180 1.98428 1.31502 0.19090 0.20740 0.70809 HSDPT[29] 0.41847 1.97408 1.31761 0.15111 0.14874 0.70948 Present 0.42294 1.99432 1.31236 0.21206 0.23857 0.70666 Table. 2: Comparative study of deflections and stress non-dimensional of sandwich plate FGM for different volume fraction value.