Quasi-static crushing of S-shaped aluminum front rail

Zheng, Li; Wierzbicki, Tomasz

doi:10.1533/ijcr.2004.0284

Cited by 19 publications

(12 citation statements)

References 12 publications

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“…From previous research [11] based on the thin-walled structures, it was found that the characteristics of the solutions for circular and square cross-sections were very similar. Therefore, any circular tube can be approximated using an equivalent square tube.…”

Section: Bending Collapse Mechanismmentioning

confidence: 83%

“…Therefore, any circular tube can be approximated using an equivalent square tube. According to [11], the width of the equivalent square tube was calculated using analytical methods as 1.63R and it was verified that the circular crosssection and its equivalent square cross-section provided the same first moment of inertia. For small angle values of a and y, this relationship can be rewritten as Angle g is related to a and y through tg g ¼ tgðy=2Þ À Á = sin a.…”

Section: Bending Collapse Mechanismmentioning

confidence: 99%

“…In their work, important equations were derived based on numerical methods and verified through experiments, and proposed to predict and describe the crush behavior of thin-walled tubular columns during axial compression. In addition to the axial crushing behavior of the thinwalled circular tubes, Zheng and Wierzbicki [11] obtained a moment-angle response for the tubular structures via experimental and analytical studies. Nevertheless, the bending behavior of the thin-walled circular tubes during impact analyses still needs to be determined.…”

Section: Introductionmentioning

confidence: 99%

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Bending collapse of thin-walled circular tubes and computational application

Liu

Day

2008

Thin-Walled Structures

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Section: Bending Collapse Mechanismmentioning

confidence: 83%

Section: Bending Collapse Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bending collapse of thin-walled circular tubes and computational application

Liu

Day

2008

Thin-Walled Structures

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“…As mentioned in Zheng's Ref. [4], S-shaped tube buckling will occur in the place with maximum bending moment if no structural defect exists. This position is just located in the curved part.…”

Section: The Design Of Hot Forming Gradient Compositementioning

confidence: 89%

Simulation and Optimization on Service Performance of Hot Forming Parts

Liu

et al. 2012

Springer Series in Advanced Manufacturing

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Hot forming parts are most suitable for the body structural parts due to their ultrahigh strength and hardness. This chapter will focus on the following questions such as how to evaluate the service performance of hot forming parts, how to optimize and design the service properties, and how to improve the service performance of the body structural parts by means of simulations and experiments.First, the analytic method of impact resistant performance of gradient composite hot forming parts, the optimization design method, and its application to the body design are investigated in this chapter. The numerical simulation method for estimating the properties of impact resistance parts is also presented.Second, the optimization design method for hot forming gradient composite metal material parts is investigated and presented, and the feasibility of existed mature optimization design methods for size, shape, and topology optimizing process with respect to hot forming parts is illustrated based on practical application.Finally, the application of hot forming parts in body design has been studied. The ''functional design'' for the body design taking advantage of hot forming parts has been put forward as well.

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“…Consequently, the ''hard and soft'' composite structure helps to reduce the peak of impact force and improve the absorption efficiency of the structure. Compared with the traditional impact energy absorption device which sets gaps to guide the folds of the energy absorption, this technique has an obvious advantage in terms of manufacturing cost and crashworthiness performance [13]. The deformation profiles of five different material combinations are shown in Fig.…”

Section: Investigation Of Impact Energy Absorption Performance Of Conmentioning

confidence: 99%

Features of Hot Forming Graded Composite Material and Its Experiment and Simulation

Liu

et al. 2012

Springer Series in Advanced Manufacturing

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A high martensite transformation rate can be obtained by hot forming process, and therefore parts with high strength and hardness can be achieved. At the same time, a new type of composite metal body structural parts with gradient hardness and strength along the thickness and length direction can be achieved through the special duct design and manufacturing process. The productive process is a ''natural formation'' by hot forming without the need for composite bonding, welding, riveting, or other connecting techniques. This process not only provides a new way to choose body material, but also conduces to the controllable design of the material's properties.In this chapter, microstructure of hot forming parts is studied by means of a combination of experimental and simulation analysis. A new kind of multi-layer composite metal materials and parts consisting of ferrite-ferrite and martensite mixture organization-martensite is found out. The properties of impact and energy absorbing between the metal composite materials with gradient hardness and microstructure produced by hot forming along the part thickness direction under impact loading are investigated.Special metal composite materials and components with continuous gradient material properties along the length direction are obtained by controlling the temperature and duct design in hot forming process. The microstructure and basic mechanical properties of the metal composite parts are analyzed. And the impact absorption capability of a hat-shaped thin-walled structure which is composed by U-shaped metal composite materials is analyzed.The forming feasibility of metal composite materials with continuous gradient material properties is illustrated by experimental and numerical simulation. These kinds of metal composite materials are suitable for the impact-resistant parts particularly.

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Quasi-static crushing of S-shaped aluminum front rail

Cited by 19 publications

References 12 publications

Bending collapse of thin-walled circular tubes and computational application

Bending collapse of thin-walled circular tubes and computational application

Simulation and Optimization on Service Performance of Hot Forming Parts

Features of Hot Forming Graded Composite Material and Its Experiment and Simulation

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