a constitutive model of 3d contact with friction is established with the use of penalty parameter and an incremental statement of problem is carried out 借助罰因子建立了三維摩擦接觸邊界的本構模型,給出了三維摩擦接觸問題的增量描述,推導了接觸問題的互補虛功方程。
the chapter one is an introduction, which includes : the statement of problem and the significance of study, a survey about the history of image segmentation, and finally, a presentation of the main research works in this dissertation . in the chapter two, from the point of view of signal and image processing, some basic theories about wavelet transform are introduced 這種方法對于不同紋理之間及紋理與物體之間有很好的特征描述,該方法能得到較好教的分割效果。全文共分為五章,第一章為緒論,闡述了本學位論文問題的提出、研究目的和意義,簡述了圖象分割和小波分析的發(fā)展與歷史,最后介紹了本文的主要研究工作。