International Journal of Vehicle Structures and Systems

Open Access Open Access  Restricted Access Subscription Access

Improvements in Vehicle Stiffness by Adding Internal Reinforcements


Affiliations
1 Dept. of Automobile Engg., Hindustan Institute of Tech. and Science, Chennai, India
2 Dept. of Mech. Engg., Hindustan Institute of Tech. and Science, Chennai, India
3 Dept. of Automobile Engg., BS Abdur Rahman University, Vandalur, India
4 School of Mech. Engg., Sathyabama University, Chennai, India
 

   Subscribe/Renew Journal


The world’s climatic conditions rises and there is a demand for environment friendly vehicle designs. The automobile industry strives hard to ensure low carbon emissions. This refers to the mass reduction and fuel consumption. This paper investigates to achieve the overall Body-in-white (BIW) bending and torsion stiffness performance using Topology optimization and light weight internal reinforcements. The potential opportunity of achieving light weight structure using the efficient way of defining the internal reinforcements has been investigated. BIW at the conceptual design phase has been considered for the research. Topology optimization was performed considering the roof rail and the rocker as the design space with an approach of achieving the improved torsion and bending stiffness performance. The optimized bulk head design locations have improved the BIW stiffness performance with minimal mass increase in the BIW. This method can be widely used at various stages of the BIW design to identify the weaker sections and then design the load path using internal reinforcements effectively. The optimized internal reinforcements has achieved higher torsion and bending performance with minimal mass addition.

Keywords

Design of Experiments, Optimization, Body-In-White Stiffness, Multi Objective, Bending, Torsion, Bulk Heads.
User
Subscription Login to verify subscription
Notifications
Font Size

  • M. Khani. 2014. Design of Light weight magnesium car body structure under crash and vibration constraints, J. Magnesium and Alloys, 99-108.

  • Q. Zhang. 2013. A simulation analysis and optimization of mode and stiffness of BIW, Proc. FISITA World Automotive Congress, 7, 145-156. https://doi.org/10.1007/978-3-642-33835-9_14.

  • G. Peterson. 2013. Cost-effectiveness of a lightweight BIW design for 2020-2025: An assessment of a midsize crossover utility vehicle body structure, SAE Tech. Paper 2013-01-0667.

  • J. Deleener. 2014. Extraction of static car body stiffness from dynamic measurements, SAE Tech. Paper 2010-01-0228.

  • B. Liu. 2014. A research on the body-in white (BIW) weight reduction at the conceptual design phase, SAE Tech. Paper 2014-01-0743.

  • B. Matteo and D. Poerre. 2012. Topology optimization for minimum weight with compliance and stress constraints, Structural Multi Disciplinary Optimization.46(3).

  • G. Zhou, G. Li, A. Cheng and G. Wang. 2015. The lightweight of auto body based on topology optimization and sensitivity analysis, SAE Tech. Paper 2015-01-1367.

  • M. Rajasekaran, V. Hariram and M. Subramanian. 2016. Multi-objective optimization of material layout for body-in-white using design of experiments. Int. J. Vehicle Structures & Systems, 8(1), 17-22. http://dx.doi.org/10.4273/ijvss.8.1.04.

  • D. Baskin. 2008. A case study in structural optimization of an automotive body-in-white design, SAE Tech. Paper 2008-01-0880.

  • J. Christensen. 2011. Lightweight hybrid electrical vehicle structural topology optimisation investigation focusing on crashworthiness, Int. J. Vehicle Structures & Systems, 3(2), 113-121. http://dx.doi.org/10.4273/ijvss.3.2.06.

  • B. Liu, Z. Zhan, X. Zhao, H. Chen, B. Lu, Y. Li and J. Li. 2014. A research on the body-in white (BIW) weight reduction at the conceptual design phase, SAE Tech. Paper 2014-01-0743.

  • Y.Y. Yim. 2007. Development of optimal design program for vehicle side body considering the BIW stiffness and light weight, SAE Tech. Paper 2007-01-2357.

  • Y.W. Lee. 1997. A Study on the improvement of the structural joint stiffness for aluminum BIW, SAE Tech. 970583.

  • D.M. Baskin, D.B. Reed, T.N. Seel, M.N. Hunt, M.Oenkal, Z. Takacs and A.B. Vollmer. 2008. A case study in structural optimization of an automotive body-in-white design, SAE Tech. Paper 2008-01-0880.

  • A.V. Londhe. 2010. A systematic approach for weight reduction of BIW panels through optimization, SAE Tech. Paper 2010-01-0389.

  • J. Conklin. 2015. BIW design and CAE, SAE Tech. Paper 2015-01-0408.

  • J. Deleener. 2010. Extraction of static car body stiffness from dynamic measurements, SAE Tech. Paper 2010-01-0228.

  • R.G. Boeman. 2002. Development of a cost competitive, composite intensive, body-in-white. SAE Tech. Paper 2001-01-1905.

  • J.S. Park. 1994. Optimal latin-hypercube designs for experiments, J. Statistical Planning and Inference, 143, 307-314. https://doi.org/10.1016/0378-3758(94)90115-5.

  • P. Calvo. 2013. Design optimization of hybrid body-in-white. SAE Tech. Paper 2013-01-0970.

  • M. Rajasekaran, V. Hariram and M. Subramanian. 2016. A new minimal part breakup body-in-white design approach and optimized material map strength assessment, J. Teknologi, 78(7), 17-22. https://doi.org/10.11113/jt.v78.5597.

  • M. Rajasekaran, V. Hariram and M. Subramanian. 2016. New methodology for light weight solutions to improve BIW structural performance using bulk head optimization, J. Mech. Science Tech., 30(8), 3533-3537.https://doi.org/10.1007/s12206-016-0713-5.

  • M. Rajasekaran, V. Hariram and M. Subramanian. 2016.New mass optimization technique to achieve low mass BIW designs using optimal material layout methodology on frontal vehicle crash, J. Mech. Science and Technology, 30(12), 3533-3537. https://doi.org/10.1007/s12206-016-1130-5


Abstract Views: 418

PDF Views: 187




  • Improvements in Vehicle Stiffness by Adding Internal Reinforcements

Abstract Views: 418  |  PDF Views: 187

Authors

Rajasekaran Mohan
Dept. of Automobile Engg., Hindustan Institute of Tech. and Science, Chennai, India
V. Hariram
Dept. of Mech. Engg., Hindustan Institute of Tech. and Science, Chennai, India
M. Subramanian
Dept. of Automobile Engg., BS Abdur Rahman University, Vandalur, India
S. Padmanabhan
School of Mech. Engg., Sathyabama University, Chennai, India

Abstract


The world’s climatic conditions rises and there is a demand for environment friendly vehicle designs. The automobile industry strives hard to ensure low carbon emissions. This refers to the mass reduction and fuel consumption. This paper investigates to achieve the overall Body-in-white (BIW) bending and torsion stiffness performance using Topology optimization and light weight internal reinforcements. The potential opportunity of achieving light weight structure using the efficient way of defining the internal reinforcements has been investigated. BIW at the conceptual design phase has been considered for the research. Topology optimization was performed considering the roof rail and the rocker as the design space with an approach of achieving the improved torsion and bending stiffness performance. The optimized bulk head design locations have improved the BIW stiffness performance with minimal mass increase in the BIW. This method can be widely used at various stages of the BIW design to identify the weaker sections and then design the load path using internal reinforcements effectively. The optimized internal reinforcements has achieved higher torsion and bending performance with minimal mass addition.

Keywords


Design of Experiments, Optimization, Body-In-White Stiffness, Multi Objective, Bending, Torsion, Bulk Heads.

References





DOI: https://doi.org/10.4273/ijvss.9.2.02