Rank deficiency in superconvergent patch recovery techniques with 4-node quadrilateral elements

Rotational dependence of the superconver

Rotational dependence of the superconvergent patch recovery and its remedy for 4-node isoparametric quadrilateral elements

✍ Oh, Hyung-Seok ;Batra, R. C. 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 142 KB 👁 2 views

The superconvergent patch recovery (SPR) with bilinear interpolation functions usually gives good values of recovered stresses in an element patch. However, when 4-node quadrilateral elements meeting at a node are rigidly rotated with the essential and natural boundary conditions unchanged, the reco