摘要
将模糊优化与有限元法相结合,并考虑回转窑筒体厚度、制造成本、筒体变形、疲劳强度等约束条件的模糊因素,建立了筒体结构优化模型,为了区分目标和约束的不同重要程度,引入了广义水平截集法,将模糊约束转化为普通约束,并应用子问题近似法进行求解。应用实例表明:筒体结构优化,减小了筒壳的最大等效应力、最大支承力及筒体的变形椭圆度,增大了筒体的疲劳安全系数,增强了筒体抗御突变载荷的能力。
Fuzzy optimization by finite element method（FEM）, considering the fuzzy factors of shell construction optimization such as shell thickness, manufacture cost, shell deformation and fatigue strength, an optimization model for shell structure was established. In order to distinguish the importance of different constraints, the generalized maximum - minimum method was adopted. By the sub-problems approximation method, the results are achieved that the maximal equivalent stress, the maximal support force and the ellipticity of the shell are reduced, so that the fatigue safety coefficient of the shell is increased and the ability to resist abrupt load is strengthened by shell structure optimization.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2006年第2期215-219,共5页
Journal of The Chinese Ceramic Society
基金
湖南省自然科学基金(04JJ3050)
湖南省教育厅重点科研计划(03A052)资助项目
关键词
筒体
模糊优化
有限元法
广义水平截集法
shell
fuzzy optimization
finite element method
generalized maximum - minimum method
