摘要
把灰色系统理论和神经网络模型结合起来 ,建立了相应的灰色神经网络模型。对有限宽正交异性薄板应力集中问题进行分析 ,根据其应力集中处附近 3点的应变值 ,来确定最大的应力 (应变 )值。结果表明 ,该方法使用方便 ,数据吻合性较好 。
Stress concentration is very common in engineering. It is the major factor which destroys building block. Because of restrictions of lots of factors, the maximum stress or strain in the region of stress concentration couldn't be obtained directly. Those occur frequently in multiplex material building block. In this paper, an adequate model was established by combining grey model and neural network model. According to three points strains in the region of stress concentration of orthotropic thin plat, the maximum strain is obtained by training the network. Analysis shows that the method is efficient and reliable, and Neural network has good self study function, it is a kind of effective research tool for solving nonlinear systematic forecast problem.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2002年第6期119-120,124,共3页
Transactions of the Chinese Society for Agricultural Machinery
关键词
正交异性薄板
最大应力值
灰色神经网络
Orthotropic plate, Stress concentration, Neural networks, Grey models
