Optimized low-risk deployment of a passenger airbag with a passenger protection wrap considering pressure dispersion

Kim, Dong-Eun; Park, Woon-Ik; Shin, Bo-Sung; Kang, Myung Chang

doi:10.1177/0954407016631148

Cited by 5 publications

(6 citation statements)

References 9 publications

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“…The acceleration curve is obtained according to the collision test results corresponding to the vehicle model, as shown in Figure 13. 13,14 Calculation of dynamic parameters of crash dummy CNCAP 2021 has made relevant regulations on the scoring principles of various body parts of the dummy in 100% frontal collision, such as head injury index (HIC), chest viscosity index (VC), knee sliding displacement, tibia index (TI), etc. Relevant evaluation standards are shown in Table 3.…”

Section: Establishment Of Cae Model Of Chinese Dummy Impact Systemmentioning

confidence: 99%

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Injury effects of knee airbags on Chinese human dummy

Huang

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Two kinds of knee airbags and dummy crash simulation models are established, and the accuracy of the models is verified by comparing the knee module impact test data and CAE simulation data. A knee airbag and dummy crash simulation system is established, and the frontal collision finite element simulation of the Chinese 50th percentile dummy is carried out under the three conditions of no knee airbag, bottom-mounted knee airbag, and rear-mounted knee airbag. According to the regulations of China-New Car Assessment Program (CNCAP), the injury data of major body parts such as the head, chest, femur, and legs are compared and analyzed, and the differences in damage to the dummy caused by the bottom-mounted knee airbag, the non-knee airbag and the rear-mounted knee airbag are focused on. Conclusion: Compared with the HIII dummy with knee airbag, the chest compression and tibia compression force of the Chinese dummy with knee airbag are larger, and the compression force of femur is smaller; compared with the condition without knee airbag, the value of head acceleration, tibial index, chest deformation, etc of Chinese dummy can be reduced with knee airbag, but the tibial axial force and knee side displacement have increased; compared with the condition of the rear-mounted knee airbag, the bottom-mounted knee airbag has better protection performance for the dummy’s head, chest, upper leg, and lower leg, but the knee side displacement of bottom-mounted knee airbag is greater, and the axial compression of the tibia is greater. This paper can provide a theoretical basis for the design of knee airbag in the Chinese market and the development of Chinese human dummy.

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Section: Establishment Of Cae Model Of Chinese Dummy Impact Systemmentioning

confidence: 99%

“…The acceleration curve is obtained according to the collision test results corresponding to the vehicle model, as shown in Figure 13. 13,14…”

Section: Injury Analysis Of Chinese Dummy Under Frontal 100% Overlap ...mentioning

confidence: 99%

Injury effects of knee airbags on Chinese human dummy

Huang

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Therefore, there is a need for control and optimization of the airbag deployment. Since the introductionof airbags, there have been many attempts to optimize the restraint effect and reduce the injuries for different crash situations by tuning various parameters such as airbag deployment time, early occupant coupling with the airbag, pressure dispersion direction and stagewise deployment [2][3][4][5]. Mercedes-Benz developed PRE-SAFE ® Impulse Side.…”

Section: Introductionmentioning

confidence: 99%

“…Kim et al designed a low-risk deployment airbag with a protective wrap. It disperses the airbag pressure in lateral directions and reduces the force on the occupants [4]. The self-adaptive vent (SAV) is a useful optimization technique for keeping the airbag inflated for a longer protection time.…”

Section: Introductionmentioning

confidence: 99%

Tactile Occupant Detection Sensor for Automotive Airbag

et al. 2021

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Automotive airbags protect occupants from crash forces during severe vehicle collisions. They absorb energy and restrain the occupants by providing a soft cushion effect known as the restraint effect. Modern airbags offer partial restraint effect control by controlling the bag’s vent holes and providing multi-stage deployment. Full restraint effect control is still a challenge because the closed-loop restraint control system needs airbag–occupant contact and interaction feedback. In this work, we have developed novel single and matrix capacitive tactile sensors to measure the occupant’s contact data. They can be integrated with the airbag surface and folded to follow the dynamic airbag shape during the deployment. The sensors are tested under a low-velocity pendulum impact and benchmarked with high-speed test videos. The results reveal that the single sensor can successfully measure occupant–airbag contact time and estimate the area, while the contact position is additionally identified from the matrix sensor.

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“…Kang et al presented a design-for-six-sigma-type low-risk deployment passenger airbag that was optimized by including a passenger protection wrap. 20 Yun et al used the design of experiments (DOE) method to optimize an automotive curtain airbag. 21 Additionally, Lim and Yang also paid considerable attention to the advanced pedestrian airbag system and contributed to the progress in its design.…”

Section: Introductionmentioning

confidence: 99%

Dynamic abuse testing of airbag system for passenger car under vehicle-road conditions and identification method for high-risk triggering items

She

Zuo

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Determination of the triggering conditions for automobile airbags is a complex problem because vehicles often run under transient conditions due to the dynamic influence from varying road conditions. The research into malfunctions of automobile airbags is an important and challenging topic. In this work, the peak acceleration and moving window integration algorithms were used to obtain the high-risk abuse items from a test matrix that consisted of 111 items which were under multiple road environment excitation, including condition categories for typical roads, curb striking, potholes and drains, and roadblocks. A novel multi-channel data reduction method and improved clustering method based on abuse probability sorting were proposed, and based on the specific characteristic constraints for the automobile airbag malfunction test results, by construction of a false triggering probability model and discussion of the weight factors of the two algorithms, importance rankings for the high-risk false action items were realized based on the relative probability. Finally, 53 high-risk abuse items were identified from a large set of 111 test items through 10-channel acceleration sensors. After analysis and comparison of the test condition details, conclusions of high-risk items are drawn with regard to the vehicle-road excitation that affects airbag abuse. The consistency of the identification results with the Chinese national standard verifies the accuracy and effectiveness of the proposed method.

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Optimized low-risk deployment of a passenger airbag with a passenger protection wrap considering pressure dispersion

Cited by 5 publications

References 9 publications

Injury effects of knee airbags on Chinese human dummy

Injury effects of knee airbags on Chinese human dummy

Tactile Occupant Detection Sensor for Automotive Airbag

Dynamic abuse testing of airbag system for passenger car under vehicle-road conditions and identification method for high-risk triggering items

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