Femur and Knee Injury Reduction by Use of Knee Bolsters in Frontal Crashes

Gokhale, Ajit; Saravate, V B; Chalipat, Sujit; Kshirsagar, Sarang

doi:10.4271/2007-26-001

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…Substituting equations ( 7) and (8) into equation (3). The moment M P at point P was expressed in equation (9).…”

Section: Simplified Femur Mechanical Modelmentioning

confidence: 99%

“…Most energy absorbing brackets could adopt stable shapes like C, D, U, L, and S. Ayyakannu et al 8 developed a three-piece cellular structural KB, accommodating a range of occupant sizes and weights and achieving 4 or 5 stars in the frontal crash test. Moreover, the KB designed by Gokhale et al 9 could reduce the forward displacement of the driver and reduce the injury risk of lower extremities. And the KB designed by Kong and Park 10 could distributed the impact energy proportionally.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of an approach to reduce lower limb injuries of drivers during frontal impact

Xiao

You

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Lower limb injuries often occur in the offset frontal impact. Besides the knee airbags, increasing the distance between the knee and the knee bolster is also worth being considered to reduce the injury risk of lower limb. An innovative knee bolster assembly was proposed in this study, which can increase the active survival space and reduce the injury risk of the lower extremity in the impact. This study establishes a numerical analysis model with a restrained human body and a car. Furthermore, the muscle function is activated in the lower extremity of the human model to simulate the emergency braking condition. Moreover, five sets of simulations are conducted under 40% offset frontal impact. Results showed that the new developed knee bolster can help to reduce the injury outcomes of the driver though the elastic stiffness of joint in the knee bolster is not play an important role. In detail, the impact force of the human femur could be reduced by more than 28% with the usage of innovative knee bolster assembly and the bending moment is reduced by over 10% compared with the drivers protected by classical knee bolster. Meanwhile, the tibia injury risk is reduced by around 29% through the comparison of tibia index. In terms of ligament performance, it is found that the use of innovative knee bolster assembly could significantly reduce the stretching and elongation change of posterior cruciate ligament. This study could provide a reference for reducing the risk of lower limb injuries for drivers.

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“…Substituting equations ( 7) and (8) into equation (3). The moment M P at point P was expressed in equation (9).…”

Section: Simplified Femur Mechanical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of an approach to reduce lower limb injuries of drivers during frontal impact

Xiao

You

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…The material and inner structure of the dashboard have a great influence on the injury level which is evaluated by femur compressive force and knee slider value [1]. Previous researches have shown that the injury level highly depends on the knee penetration against the dashboard and its severity will rise with the increasing depth of that penetration [2].…”

Section: Introductionmentioning

confidence: 99%

Optimized Method for Knee Displacement Measurement in Vehicle Sled Crash Test

et al. 2017

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Abstract. This paper provides an optimized method for measuring dummy's knee displacement in vehicle sled crash test. The proposed method utilizes completely new elements for measurement, which are acceleration and angular velocity of dummy's pelvis, as well as the rotational angle of its femur. Compared with the traditional measurement only using camera-based high-speed motion image analysis, the optimized one can not only maintain the measuring accuracy, but also avoid the disturbance caused by dummy movement, dashboard blocking and knee deformation during the crash. An experiment is made to verify the accuracy of the proposed method, which eliminates the strong dependence on single target tracing in traditional method. Moreover, it is very appropriate for calculating the penetration depth to the dashboard.

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Research on Computer Simulation of Knee Airbag

Dong

Zhu

2013

Lecture Notes in Electrical Engineering

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Femur and Knee Injury Reduction by Use of Knee Bolsters in Frontal Crashes

Cited by 3 publications

References 1 publication

Investigation of an approach to reduce lower limb injuries of drivers during frontal impact

Investigation of an approach to reduce lower limb injuries of drivers during frontal impact

Optimized Method for Knee Displacement Measurement in Vehicle Sled Crash Test

Research on Computer Simulation of Knee Airbag

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