摘要
引进一种新的地下洞室最优化分析计算方法——分布密度法,它直接以分布密度为设计变量来建立目标函数,进而以此寻找合适的几何形状。通过实例计算表明,该方法不仅物理意义明确,而且在优化计算过程中不需要反复确定洞室形状、反复划分有限元网格,简化了计算工作量。
A new optimized calculation method in underground opening engineering, distribution density approach, was introduced. The objective function of the optimized calculation was established by directly using density distribution as design variable. Many practical examples show that this method is effective and efficient in computation. It does not need to divide the finite element mesh repeatedly during optimized calculation.
出处
《工程力学》
EI
CSCD
北大核心
2004年第3期204-208,共5页
Engineering Mechanics
关键词
地下洞室
优化计算
密度分布法
有限元
Calculations
Design
Finite element method
Optimization
Underground buildings
