Material Applications in ULSAB-AVC (Advanced Vehicle Concepts)

Flaxa, Volker; Shaw, Jody

doi:10.4271/2002-01-2074

Cited by 15 publications

(9 citation statements)

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“…Mechanical properties of materials used in the FE model are presented in Fig 8. Steels with the four different mechanical properties were used. High Strength Low Alloy (HSLA 350/450) steels recently were commonly used for the structural components of new cars [7]. Today the Dual Phase (DP) group steels are increasingly used.…”

Section: Methods and Objects Of Researchmentioning

confidence: 99%

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The Crash Energy Absorption of the Vehicles Front Structures

Griškevičius

Žiliukas

2003

Transport

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During the frontal crash the longerons absorb most energy of all vehicles construction elements. In order to analyse the energy absorbing capabilities of longerons under axial compression loading and to evaluate the influence of longerons geometrical characteristics and materials degradation on the vehicles safety experimental investigations and numerical calculations were performed. To assess the crashworthiness of longerons the main objective was to study the behaviour of thin-walled structural elements under axial loading conditions using the Finite Element (FE) model. The numerical FE models were created using the computer code LS-DYNA. Two models of longerons were investigated with different sections shape and for each of them materials with the four different mechanical characteristics were applied. Validation of created FE model was performed according to the experimental investigation and the results were obtained of validated FE models of vehicles crash analysis [I].The results of analyses show that the value of absorbed energy by the longerons of new vehides exceeds the value of the oldest cars. The degradation of structures in the old cars has the significant influence on the absorbed energy.

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Section: Methods and Objects Of Researchmentioning

confidence: 99%

“…Today the Dual Phase (DP) group steels are increasingly used. For the longerons the DP 500/800 steel [7] is commonly used. The other two mechanical properties were obtained from the tensile test of the specimens of longerons (Fig 9).…”

Section: Methods and Objects Of Researchmentioning

confidence: 99%

The Crash Energy Absorption of the Vehicles Front Structures

Griškevičius

Žiliukas

2003

Transport

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“…Strength calculations for the native material: A sample of 1.8 mm in thickness and 40 mm in width was used for the tests -the surface of the samples was 72 mm 2 (Table III). The joint meets the strength criteria…”

Section: Fig 3 Weld Macrostructure With Microscopic Photo Points Mamentioning

confidence: 99%

Robotic Spot Welding of DOCOL 1200M Steel

Górka¹,

Ozgowicz²,

Matusek³

2019

Weld. Tech. Rev.

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The paper presents robotic spot resistance welding technologies for DOCOL 1200M steel with a thickness of 1.8 mm. DOCOL 1200M steel with a martensitic structure is intended mainly for the production of car bumpers, side beams and other elements ensuring the safety of the user of motor vehicles. The test joints were made on a robotic station equipped with a KUKA KR180 robot and a welding from ARO. The obtained welded joints were subjected to macro and microscopic metallographic tests, hardness measurement and strength tests. It has been shown that for properly selected resistance spot welding, DOCOL 1200M steel joints with a satisfactory strength level can be obtained.

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“…These complex microstructures provide steel products manufactured with high strength, good ductility, low yield to tensile strength ratio, high bake-hardenability, high strain hardening and toughness [6]. The main advantage of DP steels is that may be developed with low to high yield strength (YS) to ultimate tensile strength (UTS) ratios, which allows for a broad range of applications from crumple zone to body structure [7,8]. However, the main advantages and resulting benefits of using DP steels depend strongly on the development of appropriate processing routes to optimize the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental Determination of Continuous Cooling Transformation (CCT) Diagrams for Dual-Phase Steels from the Intercritical Temperature Range

Bräutigam–Matus

Altamirano

Salinas‐Rodríguez

et al. 2018

Metals

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The phase transformation kinetics under continuous cooling conditions for intercritical austenite in a cold rolled low carbon steel were investigated over a wide range of cooling rates (0.1–200 ∘ C/s). The start and finish temperatures of the intercritical austenite transformation were determined by quenching dilatometry and a continuous cooling transformation (CCT) diagram was constructed. The resulting experimental CCT diagram was compared with that calculated via JMatPro software, and verified using electron microscopy and hardness tests. In general, the results reveal that the experimental CCT diagram can be helpful in the design of thermal cycles for the production of different grades of dual-phase–advanced high-strengh steels (DP-AHSS) in continuous processing lines. The results suggest that C enrichment of intercritical austenite as a result of heating in the two phases (ferrite–austenite) region and C partitioning during the formation of pro-eutectoid ferrite on cooling significantly alters the character of subsequent austenite phase transformations.

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Material Applications in ULSAB-AVC (Advanced Vehicle Concepts)

Cited by 15 publications

References 0 publications

The Crash Energy Absorption of the Vehicles Front Structures

The Crash Energy Absorption of the Vehicles Front Structures

Robotic Spot Welding of DOCOL 1200M Steel

Experimental Determination of Continuous Cooling Transformation (CCT) Diagrams for Dual-Phase Steels from the Intercritical Temperature Range

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