Finite element modeling for analysis of cracked cylindrical pipes  

作　　者：SUNG Wen-pei GO Cheer-germ SHIH Ming-hsiang 

机构地区：[1]Department of Landscape Design and Management,National Chin-Yi University of Technology,Taiping,Taichung 41111,Taiwan,China [2]Department of Civil Engineering,National Chung Hsing University,Taichung 40227,Taiwan,China [3]Department of Construction Engineering,National Kaohsiung First University of Science and Technology,Kaohsiung 811,Taiwan,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2007年第9期1373-1379,共7页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project (No. NSC-95-2221-E-167-002) supported by the National Science Council of Taiwan, China

摘　　要：The characteristic properties of shell element with similar shapes are used to generate a so-called super element for the analysis of the crack problems for cylindrical pressure vessels. The formulation is processed by matrix condensation without the involvement of special treatment. This method can deal with various singularity problems and it also presents excellent results to crack problems for cylindrical shell. Especially,the knowledge of the kind of singular order is not necessary in super element generation; it is very economical in terms of computer memory and programming. This method also exhibits versatility to solve the problem of kinked crack at cylindrical shell.The characteristic properties of shell element with similar shapes are used to generate a so-called super element for the analysis of the crack problems for cylindrical pressure vessels. The formulation is processed by matrix condensation without the involvement of special treatment. This method can deal with various singularity problems and it also presents excellent results to crack problems for cylindrical shell. Especially, the knowledge of the kind of singular order is not necessary in super element generation; it is very economical in terms of computer memory and programming. This method also exhibits versatility to solve the problem of kinked crack at cylindrical shell.

关 键 词：Crack shell SUPER-ELEMENT Pressure vessel 

分 类 号：TH49[机械工程—机械制造及自动化] TB115[理学—数学]