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1 引言结构元件的形状具有不确定性,这种不确定性可能是由于制造过程中的加工误差或装配误差,也可能由于结构在工作时的磨损等其它原因.人们有必要寻求一种方法来估计这种由于形状的不确定性而产生的结构响应及固有特性的误差.决定结构性能的参数基本上
1 INTRODUCTION The shape of a structural element is uncertain. This uncertainty may be due to machining or assembly errors in the manufacturing process, or it may be due to other reasons such as the wear of the structure during operation. There is a need to seek a way to Estimate the structural response and intrinsic property error due to the uncertainty of the shape. The parameters that determine the structural performance are basically