文档介绍：Asa% Conrpurm & Swucrum Vol. 55, No. 3. PP. 515-525, 1995
CopyrIght t 1995 Els&er Science Ltd
> Pergamon Printed m Great Britain. All rkhts reserved
PARISON BETWEEN TWO OPTIMIZATION
METHODS ON THE STACKING SEQUENCE OF
FIBER-POSITE LAMINATE
Li-ren TsauP and Chyuan-huei Liu$
TDepartment of Mechanical Engineering, Chung Cheng Institute of Technology, Ta-Shi, Taiwan 33509,
Republic of China
$Chung-Shan Institute of Science and Technology, Taichung, Taiwan, Republic of China
(Received I4 November 1993)
Abstract-This article is dealing with the study of optimization for the stacking sequence posite
laminates by two optimization methods of simplex and interior penalty. In the simplex method, both the
applicable domain of magnifying factors (MFs) and the differences of stacking sequence optimization
between symmetrical and unsymmetrical posites are studied. When the values of MFs are
50, 70, 85, the converging of optimization process is faster and its result is more accurate. The strength
of the unsymmetrical laminate with fewer layers is larger than that of the symmetric one by 8% only.
But when the layers are increased, the strength of symmetric laminate is higher. In the interior penalty
method, the error value can be kept within 5%6%, while in the simplex method the more layers the larger
the error value. To sum up, proved by progressive failure simulation of finite element analysis, the best
strength posite laminate with optimal stacking sequence can be obtained.
posite lamina cannot meet the strength require-
stiffness matrix of whole structure ment, composite laminates stacked by laminae are
displacement matrix of nodal points developed. There have been many researches about
force distribution matrix of nodal points the stacking problem posite laminates. Some
operator matrix for element used the factors of frequency, damping, displacement
the general stress-strain relation [I I]
or mater