Structure Analysis Based On Object-Oriented Rectangle Truss Element

The finite element method (FEM) has become the most popular method for solving varieties of complex engineering problems.With finite element method widely used it is much more significant that the researchers introduce new styles of elements to make necessary supplement for FEM depending on specific calculation demand and structure feature.The normal elements which have been widely used are quite accurate in calculations and in simulating structure deforming.However,it becomes complex if we want to make accurate calculations.When one wants to make accurate calculations he should use complex element style and it is a long time for us to get what he wants.One prefer to adapting a kind of element that is easily shaped,analyzed and calculated.Truss element is well shaped and the result is easily understood.Owing to truss element The article pose rectangle truss element.Rectangle truss element inherits truss element's merits because it is also a kind of truss element.Because of stress equivalent,strain equivalent and displacement equivalent the article use rectangle truss element to solve continuous mediator.It makes us not only calculate more easily but also get accurate result.There are viriaties of finite element calculation software with the development of computation technology,such as ANSYS,SAP,ABAQUS,and so on.However,there are also unknown problems that the software above can't solve,it is necessary for researchers to study programme. The object-oriented programming (OOP) technique has been shown to significantly improve finite element anlysis software. OOP creates superclass and derive subclass by inheritance,reinforce the independent of the objects by encapsulation,reload functions by polymorphism.The article devides the core part of structure anlysis into matrix class,node class,material class,load class and element class,and rectangle truss class we introduce too.The article complete structure anlysis calculation programming by designing and completing these classes.The article approve the accurate of rectangle truss element through instance analysis.The artilce can conclude that rectangle truss element is not only shaped easily as truss element,but also easy for theory analysis and compiling code.It keep the attributes of continuous mediator deforming and stress.The article introdude a new kind of element style and make significant work for finite element method.