Experimental Evaluation of Test Procedures for Frontal Collision Compatibility

Takizawa, Satoshi; Higuchi, Eisei; Iwabe, Tatsuo; Sugimoto, Tomiji; Kisai, Takayuki; Suzuki, Takayuki

doi:10.4271/2004-01-1162

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…Thus, the measured deceleration in the vehicle will be lower than if the impact was against a rigid barrier. This has been observed in tests [4] and it has been remarked that the measured deceleration response with this deformable and crushable face is a poor representation of similar data obtained in a vehicle-to-vehicle test. …”

Section: Measurements With Deformable Barriermentioning

confidence: 76%

“…One of the significant effects is that the deformation mode of the vehicle is altered when the softer material is introduced [4]. It has also been observed that the deceleration values measured in the vehicle's passenger compartment are altered by the presence of the 300 mm deep deformable material.…”

Section: Measurements With Deformable Barriermentioning

confidence: 96%

“…The numeric measures proposed for quantifying the load distribution patterns are coefficients of 'homogeneity' and of 'variance' [5]. The homogeneity assessments can be calculated in various ways -across a row of load cells ('row homogeneity'), across a column of load cells ('column homogeneity'), or across an area of load cells ('cell homogeneity') -and are 'based on the difference between the peak cell load and target load over a specified assessment area' [4]. The coefficient of variance is usually defined as the ratio of standard deviation (of load measured over a predefined number of load cells) divided by the 'mean' value of the load.…”

Section: Load Distribution Homogeneity and Variance Coefficientsmentioning

confidence: 99%

“…The subject of crash compatibility between vehicles has received high levels of attention recently [1][2][3][4]. The inherent issue is defined often in terms of the safety of the occupants of a smaller vehicle (generalized as a passenger car) when involved in a collision with a larger vehicle (generalized for the US vehicle fleet as a light truck vehicle).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of structural parameters for vehicle crash compatibility

Nagappala¹,

Murugan²,

Tung³

2004

International Journal of Crashworthiness

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Several numeric measures have been proposed in the past for the assessment of crash compatibility between two vehicles of dissimilar sizes. These proposed measures are generally intended to quantify the dynamic behavior of the vehicle structure in a crash and they intend to measure either the location of application of vehicle's crash forces, or the peak values of the forces and their distribution pattern such as the co-efficient of variance and homogeneity. This paper presents results for the height of force and for the load distribution patterns for several vehicles from crash tests and from finite element simulations. Results were obtained for crashes against rigid barrier instrumented with two different sizes of load cells to assess the effect of the load cell size on these parameters and on the relationship of these parameters to the vehicle structure. Investigations were also conducted for the case when a deformable face is added to the load cell barrier and results are presented assessing the influence of the deformable face on the measurement of height of force and of load distribution patterns. The relationship between the vehicle structure, the various proposed parameters, their measured values, the inherent errors and the effect on self-protection as well as partner protection in vehicle-to-vehicle crashes are discussed.

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Section: Measurements With Deformable Barriermentioning

confidence: 76%

Section: Measurements With Deformable Barriermentioning

confidence: 96%