Finite Element Analysis 2. (a) Briefly describe the most suitable FE model for t
ID: 2088527 • Letter: F
Question
Finite Element Analysis
2. (a) Briefly describe the most suitable FE model for the following applications: (i) (ii) (iii) (iv) (v) Racing car chassis made up of welded pipes A pin-jointed truss. A pressure vessel with all features constant along the circumference. An L-shape thin lamina used as a structural bracket. An engine connecting rod (30 marks) (b) The following are terms used in the general equation for elasticity, solved with the finite element method emax emax S(e) Write down the relationship between [k], fF? and the solution displacement field, and state the physical meaning of all the above terms (15 marks)Explanation / Answer
2)a)
1) Racing car chasis with welded pipes: In this the chasis will experience more frictional and vibrational forces. But at the welded joints there are different stresses applys in that the the fatigue stress is the main factor which depends on the number of kilometers that can travelled or number of cycles does the chasis moved. The finite element analysis for this experiment is to observe each and every element in a regular way to determine the life and stresses acting on it regularly.
2) A pin joined truss: A truss is made up of differnt links in that the links are joined by the pins. In the trusses there are mainly tensional and compressional forces are acting on it regularly. The finite element anlaysis of the truss pins can be found like tensional force and compressional forces.
3) A pressure vessel with all features constant along the circulferance: Here the pressure vessel effected by the longitudinal and circumferential stresses. In that one element is taken and then the element is observed keenly with the pressure cycles or stresses.
4) An L shaped thin lamina used as a structural bracket: Here in the L shaped lamina there are stresses acted on the edge of the two limbs. In the joint there are tensional stress on one side and the compressional stress on the other side. so that the element is taken and then some of the forces applied on it before joint. The finite element analysis is done on tensional side.
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