Table of Contents

LIST OF TABLES                                                                 

LIST OF FIGURES             

ABBREVIATIONS AND ACRONYMS 

 

CHAPTER

 

         1.  INTRODUCTION

         Statement of the Problem

         Objectives

 

         2.  LITERATURE REVIEW        

 

         3.  FINITE ELEMENT MODEL                

         Overview                 

         Construction Model in Autodesk Mechanical Desktop 6.0           

         Geometry in I-DEAS 10       

                  Top Plate Geometry      

                  Back Plate, Ribs, Headblock, and Tailblock Geometry        

                  Neck Geometry            

                  Fingerboard Geometry                

                  Headstock Geometry   

         Finite Element Model in I-DEAS 10               

                  Top Plate Meshing      

                  Bridge Meshing            

                  Bridge Plate Meshing  

                  Saddle and Nut Meshing            

                  Top Plate Brace Meshing           

                  Rib Meshing 

                  Kerfing Meshing          

                  Back Plate Meshing     

                  Back Plate Brace Meshing         

                  Neckblock, Tailblock, Neck and Headblock Meshing          

                  Fingerboard Meshing  

                  Tuning Machine Meshing          

                  String Meshing             

                  Top and Back Plate Arching      

 

         4. BOUNDARY CONDITIONS              

         Overview               

         BC1:  Top Plate Free, Ribs, Back Plate, and Neck Constrained

         BC2:  Back Plate Free, Ribs, Top Plate, Neck Constrained         

         BC3:  Top Plate Free, Contour Constrained   

         BC4:  Back Plate Free, Contour Constrained 

 

         5.  PROCEDURES      

                  Overview               

                  Procedure for Normal Modes Analysis           

            Top Plate                      

            Back Plate        

                  Procedure for Sensitivity Analysis   

                  Top Plate       

                           Influence of feature inclusion on frequency of mode (0, 0)         

                           Influence of parameter change on frequency of mode (0, 0)       

                           Influence of arching on frequency of mode (0, 0)         

                           Influence of feature inclusion on MEW of mode (0, 0)                

                           Influence of parameter change on MEW of mode (0, 0)              

                           Influence of arching on MEW of mode (0, 0)                

                  Back Plate     

                           Influence of feature inclusion on frequency of mode (0, 0)         

                           Influence of parameter change on frequency of mode (0, 0)       

                           Influence of arching on frequency of mode (0, 0)         

                           Influence of feature inclusion on MEW of mode (0, 0)                

                           Influence of parameter change on MEW of mode (0, 0)              

                           Influence of arching on MEW of mode (0, 0)                

 

         6.  RESULTS                

                  Normal Modes Analysis     

                  Normal Modes Analysis Results of Top Plate        

         Normal Modes Analysis Results of Back Plate

 Sensitivity Analysis            

                  Frequency of Mode (0, 0) for Top Plate  

                           The influence by feature inclusion   

                           The influence by parameter change  

                           The influence by arching    

                  Frequency of Mode (0, 0) for Back Plate                

                           The influence by feature inclusion   

                           The influence by parameter change  

                           The influence by arching    

                  MEW of Mode (0, 0) for Top Plate

                           The influence by feature inclusion   

                           The influence by parameter change  

                  MEW of Mode (0, 0) for Back Plate

                                    The influence by feature inclusion   

                           The influence by parameter change  

 

         7.  CONCLUSIONS    

                  Normal Modes Analysis     

                  Sensitivity Analysis of Top Plate Frequency of Mode (0, 0)       

                           Influence by Feature Inclusion  

                  Influence by Parameter Change                

                  Influence of Arching   

         Sensitivity Analysis of Back Plate Frequency of Mode (0, 0)     

                  Influence by Feature Inclusion  

                  Influence by Parameter Change                

                  Influence by Arching  

                  Sensitivity Analysis of Top Plate MEW of Mode (0, 0)               

                  Influence by Feature Inclusion  

                  Influence by Parameter Change                

         Sensitivity Analysis of Back Plate MEW of Mode (0, 0)             

                  Influence by Feature Inclusion  

                  Influence by Parameter Change                

         Modeling Errors in FEM    

                  Neck               

                  Reinforcing Strip         

                  Braces            

                  Material Properties      

                  Accuracy of Blueprint 

 

         8.  FUTURE WORK   

 

APPENDICES     

         A.  Material Properties                

B.  Step-By-Step          

C.  Beam Sections       

D.  Finite Element Models         

E.  Mode Shapes          

 

BIBLIOGRAPHY               

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