A Method for Finding Document Containning Reactionary Viewpoints
0 likes50 views
The document describes using topology optimization to optimize the design of a front suspension shackle support. It discusses setting up the topology optimization parameters including design variables, constraints, and objective functions. It then performs finite element analysis on the optimized design under different load cases and compares the stresses to the permissible limits and the original baseline design. The optimized design showed a 30% mass reduction while keeping all stresses below limits, making it a manufacturable and improved design for the suspension shackle support.
A Method for Finding Document Containning Reactionary Viewpoints
- 1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 08 | Aug -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 114 Optimization of Front Suspension Shackle Support using Finite Element Analysis Shashikant Jadhav1, S. J. Madki2 1ME Design, Brahmdevdada Mane Institute of Technology, Solapur, India 2 Professor Department of Mechanical Engineering, Brahmdevdada Mane Institute of Technology, Solapur India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Design of suspension systems forHeavyTrucksis always challenging due to the heavy loads the system is exposed to and the long life requirements for the total system. Topology optimization is used at theconceptlevel of the design process to arrive at a conceptual design proposal that is then fine-tuned for performance and manufacturability. Due to this avoidscostlydesigniterations and time consuming. Hence it reduces design development time and overall cost of improved design performance. A mathematical approach that optimizes material layout within a given design space, and for a given set of loads and boundary conditions such that the resulting structuremeets a prescribed set of performance targets. Engineers can find the best design concept that meets the design requirements by using topology optimization. Application of topology optimization has been done with finite elements methods INTRODUCTION Optimization carried out by considering space design is the allowable volume within which the design can exist. Assembly and packaging requirements, human and tool accessibility are some of the factors that need to be considered in identifying this space, with the definition of the design space. Regions or components in the model that cannot be modified during the courseoftheoptimization are considered as non-design regions. It will be shown that the optimum topology obtained #rom an example topology optimization process is independent of the material used and the dimension size of the structure. Withoutconsidering any cad model Topology optimization is carry out by considering box model. In this paper describe the how to achieved the optimization of support for more strength, stiffness and lessweight.From optimization we got solution near the mass production, design is improve in the weak areas of the part. THESETUPPARAMETERS forTOPOLOGYOPTIMIZATION The side cast support bracket is neatly meshed as in case of the topology optimization the person can assign to the part different densities but cannot move the grid points in to the model. 1. Design variable Geometry 2. Constraints Geometry: Mass of design space <30 3. Objective function (Design function) - Introduced stress below Manufacturing constraint 5. Member Size Control –Maximum or Minimum size 6. Draw Direction Constraints –Drawing parts Direction 7. Design Space –Removal of material.
- 2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 08 | Aug -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 115 Table -1: Summary of Forces/Moments applied for model to be optimized Magnit ude Vertic al Longitud inal Late ral Cros s twis t Bogie twist Slow turni ng Even t Fx (N) 4882. 9 4342.3 8427 .2 7510. 1 -866.5 - 5931. 4 Fy (N) 18976. 3 21901.5 1731 .2 2785. 8 - 5368. 4 - 411.2 Fz (N) - 37715 .7 -43543.9 - 3446 .7 - 5546 .3 10688 .2 818.7 Mx (N- mm) -7 -7.9 -0.5 -0.9 2 0.1 My (N- mm) - 28007 2 -264441 - 6490 54 - 4928 82 - 25767 6 5023 12 Mz (N- mm) 33536 7.6 -309294 - 5956 29 - 6749 52 37553 7.4 4263 90 Figure 3. Element density plot Figure 4. Optimization Results LINEAR STATIC ANALYSIS OF MANUFACTURABLE DESIGN Figure 5.von Misses Stress plot: Vertical Load case Figure 6.von Misses Stress plot: Longitudinal Load case
- 3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 08 | Aug -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 116 Figure 7.von Misses Stress plot: Vertical Load case Figure 8.von Misses Stress plot: Lateral Load case Figure 9.von Misses Stress plot: Cross Twist Figure 10. von Misses Stress plot: Bogie Twist Figure 11.von Misses Stress plot: Slow turning event RESULT Table 2. Optimization Result Load Cases Permissible stress (Mpa) Baseline Design(Mpa) Optimized Design (Mpa) Vertical 320 478 238 Longitudinal 320 357 264 Lateral 200 342 152 Cross Twist 300 176 138 Bogie Twist 300 355 192 Slow turning event 250 338 123
- 4. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 08 | Aug -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 117 CONCLUSIONS To Perform Optimization of a Suspension Shackle support under load cases as per industry standard using topology optimization methodology. These includes literature review that is to judge to be significant for this analysis, complete modeling of Shackle support. Following are the conclusions drawn from above analysis report. 1. All the steps of the optimization methodology are described briefly. This method can be used to optimize any kind of structure. The suspension shackle support is optimized to show application of methodology. 2. The topology optimization is advanced function of many analysis software this is the functionality to empower analysis/design specialist with these currently available in the market useful tools to optimize any complicated model. 3. Using this methodology we have saved the material 30%. 4. The optimized Suspension Shackle support is manufacturable and the shape does not interfere with the working of other nearby components. 5. Further, these loads are used in Finite element analysis of suspension shackle support and stresses are found out for every load i.e. longitudinal, vertical, lateral, racking, cross twist and bogie twist results shows maximum stresses are found near holes and corners but are within specified limits. REFERENCES 1. Eduardo CasteloBranco Porto “Structural Optimization of a Rear Cabin Suspension Bracket and of a Frame Air Filter Bracket”Technical report, SAE Documents2004- 01-3391. 2. Caner Demirdogen.Jim Ridge, Paul Pollock and Scott Anderson “Weight Optimized design of a front suspension component for commercial heavy truck” Technical report, SAE Documents2004-01-2709. 3. Hong Suk Chang “A Study on the Analysis method for Optimizing Mounting Brackets” Technical report, SAE Documents_2006-01-1480. 4. Chang-SeongKo, Dong-Ho Yoo, Kyung-Whan Park “Design of Steering Column Mounting Bracket for Vibration” Technical report, SAE Documents 2003-01-2747. 5. Basem Alzahabi “Optimization of Transmission Mount Support ”Technical report, SAE Documents 2003-01-1460. 6. Hui Wang, Zheng-Dong Ma, Noboru Kikuchi and Christophe Pierre “Numerical and experimental verification of optimum design obtained from topology optimization” Technical report, SAE Documents 2003-01-1333.