You are required to perform a stress analysis of the shaft for this loading condition, modifying its thickness (i.e. the only design variable) and re-analysing it as necessary to meet the design limit criteria stated below. You are also required to perform a normal mode vibration analysis of your chosen shaft design. For the stress analysis it would be reasonable to neglect the masses of the shaft itself, the wheels and the bearings in ansys assignment help services by experts. It would also be reasonable to neglect the interaction between the cutting wheels and the shaft. Hint: Given the uncertainty associated with resistance to bending, consider two extreme conditions in your analysis, i.e. simple supports and encastré (constrained) supports. The same assumptions and issues will apply for the modal analyses, except that the mass of the shaft should be taken into consideration.
Design Limit Criteria: It is required to limit the maximum deflection to 0.5 mm in order to maintain wheel alignments, and keep maximum tensile stresses below 60.0 MPa. You therefore have to choose a recommended dimension of minimum thickness to meet the criteria, and then carry out detailed analyses of your design with this thickness. You have to submit a detailed report on your project analysis. We expect to see details of all the assumptions you make, your modelling strategy including selection of suitable element(s) for FEA, verification trials and details of validation processes, etc.
Analysis is to be done using ANSYS or MATLAB Programming
You are advised to conduct many analyses, fine-tuning your model to provide valid modelling of important details, such as any stress raisers, until you are satisfied that the results are meaningful. Your report should include the following: a clear statement of the problem and your approach to it; what FEA element(s) and mesh size(s) in your ansys assignment help for you chose and why; what boundary conditions you considered and decided upon, including how the loads are applied and the representation of any restraints; whether or not any symmetry or anti-symmetry conditions were applicable, and if so what additional boundary conditions you specified for these; what mathematical or other theoretical calculations you employed to validate the results; a discussion on whether or not using a high strength steel (with a higher yield strength but a similar modulus of elasticity) would affect the deflection and minimum thickness of the cutting shaft – no calculations or simulations are required; an appraisal of and comments on the results themselves in terms of the operation of the shaft and machine. 3 The main objectives In summary, the objectives are: to determine the deflections and stresses sustained by the shaft in its operating conditions, including the magnitudes and locations of the maximum stress values to determine the first four normal modes of natural vibration of the shaft in the absence of loadings (i.e. free spinning) to discuss the effect of using a steel with higher yield strength on the deflection and minimum thickness of the cutting shaft to prepare a full report of the analysis strategy, the results and their implications.
Report Format after completion of simulation in ANSYS Software
4.1 Format Note that there are 28 study hours allocated, including the preparation of the report. We therefore expect a report, up to 20 A4 sides in length, plus any appendices for results and log files, plots of stresses, deflections, mode shapes, etc. (It is not necessary to include all of these – just those related to and illustrating your discussion in the main text of the report.) There are restrictions on the size and format of any files you submit for the via the online service. The maximum file size permitted is 10 MB. You can only submit .doc, .docx, .xls, .xlsx or .rtf documents, or zipped files containing only .doc, .docx, .xls, .xlsx or .rtf documents.
4.2 Structure You are free to adopt any style for matlab assignment help writing your report but be advised that the allocation/availability of marks will be grouped as: 10% for the report presentation quality (including spelling, grammar, legibility and formatting) 60% for the stress and deflection analysis, including discussion on the effect of using a high strength steel:
4% For correct assumptions and considering the stress concentration due to the holes.
10% For clear reference to and implementation of the boundary conditions in each case. 10% For selection and use of suitable FE model.
6% For correct discussion and use of appropriate mesh size.
4% For correct use of symmetry.
6% For full and correct mathematical hand calculations.
10% For comments and discussion of FEA results.
10% For effects of using a high strength steel.
30% for the normal mode analysis:
10% For correct assumptions and selection of a suitable FE model and mesh size.
5% For use of correct boundary conditions.
5% For correct mathematical hand calculations.
10%
For cross-checking numerical values against mathematical hand calculations. And final discussion on modal behaviour of the shaft. The general format of your report could be as follows: Title page with your name, personal identifier and a statement such as: “This document has been prepared by ___and represents his/her own work.”
Executive summary This should summarise the main aims of the analysis and its conclusions in no more than one page. Notation A list of symbols and/or explanation of assignment help terminology used. Contents A detailed list of all sections and sub-sections with page numbers. Introduction Introduces the problem and sets out aims and objectives and perhaps some background. Also perhaps gives your approach to the analysis. Analysis This is the main body of the report which should include descriptions of the modelling process, selection of element types, meshing, refinements, model limitations, etc. Also, importantly, you should include the assumptions you have made or invoked, material properties, boundary conditions tried and specified, loading conditions, etc.
