A hierarchical updating method for finite element model of airbag buffer system under landing impact

He, Huan; Chen, Zhe; He, Cheng; Lei, Ni; Chen, Guoping

doi:10.1016/j.cja.2015.10.010

Cited by 15 publications

(12 citation statements)

References 18 publications

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“…After the top of the capsule is subjected to pressure, the outer tissue structure is deformed through tension. Moreover, the internal flexible medium absorbs the top pressure through compression, and only a small part of the pressure is transmitted to the bottom of the capsule …”

Section: Resultsmentioning

confidence: 99%

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Dynamic Response Characteristics of a Sealing Airbag under Different Impact Types and Impact Pressures

Liu

Wei

et al. 2022

ACS Omega

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The rapid isolation of the disaster area underground coal mine can effectively prevent the spread of disaster accidents. Rapid sealing of the disaster area can be realized through sealing in the form of an inflatable capsule. The cushioning performance of the inflatable capsule to an explosion shock wave is an important factor affecting sealing reliability. The response process of a small inflatable capsule under an explosion shock wave was studied using the pipeline explosion experimental system to examine the dynamic response characteristics of the coal mine airbag under the impact load. The deformation buffering process of the inflatable and hydrogel capsules was tested by a drop hammer impact test. Results showed that under the action of three explosion impact pressures (0.3, 0.4, and 0.5 MPa), the inflatable capsule could absorb 22% of the impact energy through its deformation and reduce the maximum explosion impact pressure. Moreover, under the impact of falling weight at different heights (20, 30, 40, and 50 cm), the cushioning process of the inflatable and hydrogel capsules absorbed the impact energy through the compression deformation of the capsule, which is the loading stage. When the hammer speed decreased to zero, the deformation and absorbed energy of the capsule were at maximum. The capsule recovered its deformation and converted the absorbed energy into kinetic energy to make the hammer rebound, which is the unloading stage of the capsule. The capsule body realized the absorption and transfer of impact energy through its deformation and completed the energy buffer through the dynamic response process of multiple loading and unloading.

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Section: Resultsmentioning

confidence: 99%

“…Moreover, the internal flexible medium absorbs the top pressure through compression, and only a small part of the pressure is transmitted to the bottom of the capsule. 22 …”

Section: Resultsmentioning

confidence: 99%

Dynamic Response Characteristics of a Sealing Airbag under Different Impact Types and Impact Pressures

Liu

Wei

et al. 2022

ACS Omega

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“…Among them, the model order-reduction and equivalence technology is a technology that shortens the simulation running time based on ensuring the accuracy of the model, so that model can follow the real world, and this technology is also a key support for model correction and update. Among them, the method of building an agent model [43][44][45] and the method of coordinate downscaling [46,47] are the two main means of performing model downscaling.…”

Section: • Twin Model Construction Technologymentioning

confidence: 99%

On the Architecture and Key Technology for Digital Twin Oriented to Equipment Battle Damage Test Assessment

Song

Shi

et al. 2022

Electronics

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To overcome the technical bottleneck faced by the traditional equipment battle damage assessment method by analyzing the application status of digital twins in battle damage assessment, the application needs and the existing problems of current digital twin technology in damage assessment were summarized. Relying on battle damage tests, based on combing the current status of equipment battle damage test evaluation and digital twin technology research, the connotation and application features of digital twinning technology-oriented to equipment battle damage test assessment were explored. The architecture and implementation plan of the digital twin oriented to equipment battle damage test assessment were structured. The key technology and realization of digital twin oriented to battle damage test assessment were proposed. This study provided a theoretical reference and method guidance for the application of digital twins in battle damage assessment, which is of great reference significance for the development of digital twin battlefield construction and battle damage assessment.

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“…On the other side, investment costs are 37% lower than the slipway. Based on this data, it can be seen that the analysis of man-hours results in a 69% increase in productivity in the use of airbags for docking and undocking activities (He et al, 2015). However, according to Mann's research entitled "The KwaZulu-Natal Boat Launch Site Monitoring System: A novel approach for improved management of small vessels in the coastal zone," ship launching using airbags has a potential risk of ship launch failure (Mann et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Technical and Economic Analysis of Ship Launching with Slipway and Airbag KM. Sabuk Nusantara 72 in PT. Janata Marina Indah Shipyard Semarang

Sugeng

Ridwan

Suharto

et al. 2020

TEKNIK

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In a ship planning can not be separated from the planning of the ship launching process. A ship can glide perfectly if it has a high enough planning time and costs. The launch process itself is divided into several ways. The choice of this method needs to be considered because it relates to the budget and preparations made. The method used is the calculation according to the numerical approach assisted by computational software. In the first calculation it is planned with the slipway launch, and then the next one is planned with the airbags that have been implemented previously. The purpose of this study is to provide analysis results as a consideration in implementing the slipway and airbag ship launching method on KM ships. Belt Nusantara 72 measuring 2000 DWT. In steps 5 to 6, both the slipway and the airbags experience a stern lift condition with a value (yVd) of 1396.97 ton. Based on the economic analysis of the hours of people using airbags, there is a decrease in working hours by 44% when compared to the launch using a slipway. This also happened to work productivity where it was 84% more time effective. When viewed from an investment point of view, the use of slipways is actually more economical than airbag, the difference is 43% more economical using slipways. Both types of launch can be applied by looking at the economical side and the ability of each shipyard in carrying out the launching process and seeing the main size of the ship to be launched.

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A hierarchical updating method for finite element model of airbag buffer system under landing impact

Cited by 15 publications

References 18 publications

Dynamic Response Characteristics of a Sealing Airbag under Different Impact Types and Impact Pressures

Dynamic Response Characteristics of a Sealing Airbag under Different Impact Types and Impact Pressures

On the Architecture and Key Technology for Digital Twin Oriented to Equipment Battle Damage Test Assessment

Technical and Economic Analysis of Ship Launching with Slipway and Airbag KM. Sabuk Nusantara 72 in PT. Janata Marina Indah Shipyard Semarang

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