TY - JOUR
T1 - Stress analysis of holes in angle-ply laminates
T2 - An efficient assumed stress "special-hole-element" approach and a simple estimation method
AU - Nishioka, T.
AU - Atluri, S. N.
PY - 1982
Y1 - 1982
N2 - In the present paper, the development of "special hole-elements", to enable an efficient and accurate analysis of stress concentration around through-thickness holes in angle-ply laminates, is presented. In these "hole-elements", the development of which is based on a modified complementary energy principle, the analytical asymptotic solutions for the stress-state near the hole are embedded. The fully 3-D stress-state in the laminate is accounted for, and the interlaminar traction reciprocity is satisfied a priori, while the interelement reciprocity condition is satisfied a posteriori through a Lagrange multiplier method. In addition, a simple method of estimation of stress concentration factors is also given. Results obtained from the present "special-hole-element" procedure are compared with the solutions by the present simple estimation method as well as other available solutions in literature.
AB - In the present paper, the development of "special hole-elements", to enable an efficient and accurate analysis of stress concentration around through-thickness holes in angle-ply laminates, is presented. In these "hole-elements", the development of which is based on a modified complementary energy principle, the analytical asymptotic solutions for the stress-state near the hole are embedded. The fully 3-D stress-state in the laminate is accounted for, and the interlaminar traction reciprocity is satisfied a priori, while the interelement reciprocity condition is satisfied a posteriori through a Lagrange multiplier method. In addition, a simple method of estimation of stress concentration factors is also given. Results obtained from the present "special-hole-element" procedure are compared with the solutions by the present simple estimation method as well as other available solutions in literature.
UR - http://www.scopus.com/inward/record.url?scp=0019933425&partnerID=8YFLogxK
U2 - 10.1016/0045-7949(82)90061-X
DO - 10.1016/0045-7949(82)90061-X
M3 - Article
AN - SCOPUS:0019933425
SN - 0045-7949
VL - 15
SP - 135
EP - 147
JO - Computers and Structures
JF - Computers and Structures
IS - 2
ER -