ANALYSIS SECTION

ANALYSIS SECTION - Abstract A dynamic and static force...

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Abstract A dynamic and static force analysis for the geared five bar mechanism was completed. The analysis was completed for the three different configurations specified in project two as well as three different constant forces at point P. The dynamic force analysis was completed using the method of inspection. The static force analysis was done using the method of inspection, the graphical method and the equation of motion. The results for each method used to obtain the static force analysis were all consistent and the same results were achieved. Once the input torque was found, a motor was appropriately sized.
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Introduction A complete kinematic analysis of the geared five bar linkage was performed in project 2. Project 3 uses the same mechanism with the same parameters and both a dynamic and static force analysis are done. Shown below in figure 1 is the geared five bar mechanism that is analyzed. Figure : Geared Five Bar Mechanism As in project 2, the analysis was done with 3 different gear ratios. Figure 1 shows a force, F p , acting at point P. The mechanism was analyzed using values of 12.5, 125, and 1250 lbs for the applied force. The dynamic force analysis of the mechanism was done using the method of inspection. The static force analysis was performed using the method of inspection, the graphical method and the equation of motion. Once the force analysis was obtained, an appropriate motor was found. The sizing of the motor can be found in the conclusion section of this report. For the static force analysis, free body diagrams were obtained for each respective link. Then, the Newton-Euler equations were used to calculate in internal reaction forces of each link as well as the required input torque. The full results obtained for the dynamic force analysis can be found in Appendixes B, C, and D. The static force analysis was performed using the method of inspection in accordance with the same free body diagrams used to execute the dynamic force analysis. The results for the static force analysis can also be found in Appendixes B, C, and D. Appendix A shows the graphical method used to obtain the static force analysis.
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Analysis The analysis section is as follows. First a point path analysis is completed followed by a dynamic force analysis using the method of inspection. Next, a static force analysis is performed using the method of inspection, the graphical method, and finally the power equation. Point Path Analysis The point path analysis of point B is as follows: The point path analysis of point C is as follows: The acceleration analysis is found using the same method as in project 2. Free Body Diagrams Figure : Free Body Diagram of Link 2
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Figure : Free Body Diagram of Link 3 Figure : Free Body Diagram - Link 4
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Figure : Free Body Diagram - Link 5 Dynamic Force Analysis A dynamic force analysis was done on the mechanism. The dynamic force analysis was performed using the method of inspection. The dynamic force analysis is as follows. Using the free body diagram of link 2, the Newton-Euler equations are:
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This note was uploaded on 02/03/2012 for the course ME 352 taught by Professor Staff during the Fall '08 term at Purdue.

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ANALYSIS SECTION - Abstract A dynamic and static force...

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