TY - JOUR
T1 - Size effect in penetration of sea ice plate with part-through cracks. II
T2 - Results
AU - Bažant, Zdeněk P.
AU - Kim, Jang Jay H.
PY - 1998/12
Y1 - 1998/12
N2 - After development of the theory in the part I paper, systems of up to 300 nonlinear equations are solved in this paper by the Levenberg-Marquardt optimization algorithm. The maximum load is reached when the circumferential cracks begin to form. Numerical calculations show a typical quasi brittle size effect such that the plot of log σN versus log h (where αN = nominal stress at maximum load and h = plate thickness) is a descending curve whose slope is negligible only for h < 0.2 m and then gets gradually steeper, asymptotically approaching -1/2. The calculated size effect agrees with the existing test data, and contradicts previous plasticity solutions.
AB - After development of the theory in the part I paper, systems of up to 300 nonlinear equations are solved in this paper by the Levenberg-Marquardt optimization algorithm. The maximum load is reached when the circumferential cracks begin to form. Numerical calculations show a typical quasi brittle size effect such that the plot of log σN versus log h (where αN = nominal stress at maximum load and h = plate thickness) is a descending curve whose slope is negligible only for h < 0.2 m and then gets gradually steeper, asymptotically approaching -1/2. The calculated size effect agrees with the existing test data, and contradicts previous plasticity solutions.
UR - http://www.scopus.com/inward/record.url?scp=0032467568&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032467568&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)0733-9399(1998)124:12(1316)
DO - 10.1061/(ASCE)0733-9399(1998)124:12(1316)
M3 - Article
AN - SCOPUS:0032467568
SN - 0733-9399
VL - 124
SP - 1316
EP - 1324
JO - Journal of Engineering Mechanics - ASCE
JF - Journal of Engineering Mechanics - ASCE
IS - 12
ER -