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Microsft Word ME 1401 FINITE ELEMENT ANALYSISdoc微软Word我1401元analysisdoc.doc

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Microsft Word ME 1401 FINITE ELEMENT ANALYSISdoc微软Word我1401元analysisdoc

VII Semester Mechanical Engineering ME 1401 - FINITE ELEMENT ANALYSIS Short Q A 1) What is meant by finite element analysis? Finite element method is a numerical method for solving problems of engineering mathematical physics. In the finite element method, instead of solving the problem for the entire body in one operation, we formulate the equations for each finite element and combine them to obtain the solution of the whole body. 2) What is meant by finite element? A small unit having definite shape of geometry and nodes is called finite element. 3) State the methods of engineering analysis. There are three methods of engineering analysis. They are: 1. Experimental methods. 2. Analytical methods. 3. Numerical methods or approximate methods. 4) Give examples for the finite element. 1. One dimensional elements: (a) Truss element (b) Bar, Beam element 2. Two dimensional elements (a) Triangular element (b) Rectangular elements 3. Three dimensional elements (a) Tetrahedral elements. (b) Hexahedral elements. 5) What is meant by node or Joint? Each kind of finite element has a specific structural shape and is interconnected with the adjacent elements by nodal points or nodes. At the nodes, degrees of freedom are located. The forces will act only at nodes and not at any other place in the element. 6) What do you mean by discretization? Discretization is the basis of finite element method. The art of subdividing a structure into a convenient number of smaller components is known as discretization. 7) What are the types of boundary conditions? There are two types of boundary conditions, they are Primary boundary condition. Secondary boundary condition. 8) What are the three phases of finite element method. The three phases are 1. Preprocessing 2. Analysis 3.Postprocessing 9) What is structural and non-structural problem? Structural problem: In structural problems, displacement at each nodal point is obtained. By using these displacement solutions, stres