有限元分析在常规强度计算工作中的地位和作用  

THE FEM' S IMPORTANT POSITION AND ITS FUNCTION ON THE NORMAL STRENGTH ANALYSIS

作　　者：成万植[1] 

机构地区：[1]沈阳飞机设计研究所,沈阳110035

出　　处：《飞机设计》2002年第4期19-22,共4页Aircraft Design

摘　　要：以往常规强度计算方法的最大弊端在于构件的内力图是由认为施加在该构件上的外载荷确定的,而有限元素法克服了这个弊端,用构件上各计算站位(节点)的应力反推出了构件的内力图,从而大大提高了分析的精度和可靠性。本文在客观地评价有限元分析在常规强度计算工作中的地位和作用的基础上,为今后以有限元分析为基础而进行的常规强度计算工作指明了具体方法和途径的同时,又指出了二者的衔接关系。The shortcoming of normal strength analysis method which FEM has no is that the inner force is abtained according to the artificial load on the component parts. However FEM gives the inner force of the component parts from the stress on nodes. Thus the analysis precision and reliability are great improved.The text introduces FEM' s important position and it' s function on the normal strength analysis, puts forword some future strength analysis methods on the basis of FEM. And also the relationship between FEM and the normal strength analysis is explained in the text.

关 键 词：有限元分析 常规强度计算 飞机设计 受力构件 

分 类 号：V222[航空宇航科学与技术—飞行器设计] V221.92