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Testing and Finite Element Modeling of Hydroform Frames in Crash Applications
Technical Paper
2007-01-0981
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Hydroformed components are replacing stamped parts in automotive frames and front end and roof structures to improve the crash performance of vehicles. Due to the increasing application of hydroformed components, a better understanding of the crash behavior of these parts is necessary to improve the correlation between full-vehicle crash tests and FEM analysis. Accurately predicting the performance of hydroformed components will reduce the amount of physical crash testing necessary to develop the new components and new vehicles as well as reduce cycle time. Virgin material properties are commonly used in FEM analysis of hydroformed components, which leads to erroneous prediction of the full-vehicle crash response. Changes in gauge and material properties during the hydroforming process are intuitive and can be reasonably predicted by using forming simulations. The effects of the forming process have been investigated in the FEA models that are created for crash analyses. However, some studies have shown that forming effects alone do little to improve the accuracy of the FEA model. This study incorporates physical material properties obtained from forming simulations with strain rate data to more accurately predict the performance of hydroformed components. In order to verify the accuracy and robustness of the developed modeling methodology, two different frame rails are studied. The validation includes the calibration of simulation results with test data in coupon and component levels. To understand the effects of work-hardening, gauge thinning, and strain rate, a sensitivity study is conducted by using finite element simulations. The effect of each factor on the load deflection relationship, crush distance and deformation mode is discussed. Finally, to verify the modeling methodology, full vehicle simulations conducted prior to physical tests are compared with the results obtained from full vehicle tests. Both the deformation modes and responses of the hydroformed components, frame, and body are discussed.
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Authors
- Meagan Gonzalez Noble - Ford Motor Company
- Miinshiou Huang - Ford Motor Company
- Tau Tyan - Ford Motor Company
- Leonard Shaner - Ford Motor Company
- Omar Ghouati - Ford Research and Advanced Engineering
- Horst Lanzerath - Ford Research and Advanced Engineering
- Binghua Wu - Dana Corporation
- Barry Dombek - Dana Corporation
Topic
Citation
Noble, M., Huang, M., Tyan, T., Shaner, L. et al., "Testing and Finite Element Modeling of Hydroform Frames in Crash Applications," SAE Technical Paper 2007-01-0981, 2007, https://doi.org/10.4271/2007-01-0981.Also In
Modeling, Testing and Design of Materials for Dummies and Structures for Crash Safety Applications
Number: SP-2095; Published: 2007-04-16
Number: SP-2095; Published: 2007-04-16
References
- Singh H. 2003 “Fundamentals of Hydroforming” SME 2003
- Ahmetoglu M. Altan T. 1999 “Tube Hydroforming – State-of-the-Art and Future Trends” SAE Paper 1999-01-0675
- Xia Z. C. 2000 “Bursting for Tubular Hydroforming,” SAE Paper 2000-01-0770
- Koch M. 2001 “Use of FEA for Design of Part, Process and Tooling in the Metal Forming Processes - Hydroforming as a Case Study,” SAE Paper 2001-01-3090
- Chen K. K. 2001 “The Bulge of Tubes and a Failure Criterion for Tube Hydroforming,” SAE Paper 2001-01-1132
- Lin A. Chen S. 2003 “Hydroformed Tube Modeling in Crash FEA Model,” SAE Paper 2003-01-0258
- Ni C. M. Peng T. H. 2001 “Applications of Tubular Hydroformed Radiator Support Assembly to GM's New Midsize SUVs,” SAE Paper 2001-01-3089
- Goral T. Prasad P. S. Brown M. Panter K. Klages J. Longhouse B. 2005 “Automotive Front End Structures Constructed by Over Molding Hydroform Metal Tubes to Engineering Thermoplastic Structures,” SAE Paper 2005-01-1680
- Mality R. Prasad P. S. Goral T. 2006 “Material Modeling and Finite Element Analysis of Hydrofrom – Short Glass Fiber Filled Thermoplastic Front-End Structures,” SAE Paper 2006-01-0824
- Mahadevan K. Faruque O. Cheng J. Qiu Y. Dombek B. 2002 “Integration of Hydroforming Analysis of Front-End Structures into Full Vehicle Crash Models,” Proceedings of the ASME WAMJ, New Orleans November 2002
- Gao R. Pan L. Tyan T. Mahadevan K. Ghouati O Lanzerath H. Kessen M. 2006 “Impact Simulation of Hydro-Formed Front End Vehicle Structure,” SAE Paper 2006-01-0312
- Kaufman M. Gaines D. Kundrick K. Liu S. D. 1998 “Integration of Chassis Frame Forming Analysis into Performance Models to More Accurately Evaluate Crashworthiness,” SAE Paper 980551
- Simunovic S. Shaw J. Aramayo G. 2000 “Material Modeling Effects on Impact Deformation of Ultralight Steel Auto Body,” SAE Paper 2000-01-2715
- Simunovic S. Shaw J. Aramayo G. 2001 “Steel Processing Effects on Impact Deformation of Ultralight Steel Auto Body,” SAE Paper 2001-01-1056
- Zeng D. Liu S. D. Makam V. Shetty S. Zhang L. Zweng F. 2002 “Specifying Steel Properties and Incorporating Forming Effects in Full-Vehicle Impact Simulation,” SAE Paper 2002-01-0639
- Craig R. Chen Y. Tyan T. Laya J. Cheng J. 2004 “Finite Element Modeling of the Frame for Body-On-Frame Vehicles: Part 1-Subsystem Investigation,” SAE Paper 2004-01-0688
- Chen Y. Craig R. Tyan T. Laya J. Cheng J. 2004 “Finite Element Modeling of the Frame for Body-On-Frame Vehicles: Part II-Full Vehicle Crash,” SAE Paper 2004-01-0689
- Mahadevan K. McCoy R. Faruque O. 1998 “Strain-Rate Characterization of Automotive Steel and the Effect of Strain-Rate in Component Crush Analysis,” SAE Paper 982392
- Mahadevan K. Liang P. Fekete J. 2000 “Effect of Strain Rate in Full Vehicle Frontal Crash Analysis,” SAE Paper 2000-01-0625
- Li W. Tyan T. Chen Y. 2005 “Data Processing for CAE Material Input with Strain Rate Effects,” SAE Paper 2005-01-0359
- Li W. Tyan T. Chen Y. Itoh T. 2006 “Material Properties Considering Strain Rate Effect – Test Data Processing,” IABC 2006
- Sa C.-Y. Zhu X. “Integrating Metal Forming with Other Performance Analyses Using a Mapping Strategy,” SAE Paper 2005-01-0357
- Ghouati O. Lanzerath H. “MAPIT: A General Data Interface for Including Forming History in Product Performance Simulation,” Ford Research and Advanced Engineering Technical Reports
- Yan B. Kuriyama Y. Uenishi A. Comette D. Borsutzki M. Wang C. “Recommended Practice for Dynamic Testing for Sheet Steels –Development and Round Robin Tests,” SAE Paper 2006-01-0120
- Pinnell M. Hill S. Minch A. “Special Concerns in High Strain Rate Tensile Testing of Polymers,” SAE Paper 2006-01-0121
- Xu K. Wong C. Yan B. Zhu H. “A High Strain Rate Constitutive Model for High-Strength Steels,” SAE Paper 2003-01-0260
- Chen Y. Tyan T. Faruque O. “Dynamic Testing and CAE Modeling of Body Mount – An Application in the Frontal Impact Analysis of a Body-on-Frame Vehicle,” SAE Paper 2003-01-0256
- Chen Y. Tyan T. Faruque O. “Dynamic Testing and CAE Modeling of Engine Mounts and Their Application in Vehicle Crash Analysis,” SAE Paper 2003-01-0257