International Journal of Crashworthiness最新文献_第9页

Energy absorption capacity of rubber sponge reinforcement in carbon fiber reinforced plastics (CFRP) tubes 碳纤维增强塑料(CFRP)管中橡胶海绵增强材料的吸能性能

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-08-12 DOI: 10.1080/13588265.2022.2109670

Kunanon Sakkampang, Nirut Onsalung

{"title":"Energy absorption capacity of rubber sponge reinforcement in carbon fiber reinforced plastics (CFRP) tubes","authors":"Kunanon Sakkampang, Nirut Onsalung","doi":"10.1080/13588265.2022.2109670","DOIUrl":"https://doi.org/10.1080/13588265.2022.2109670","url":null,"abstract":"Abstract This research aimed to study and experimentally determine the energy absorption capacity of rubber-reinforced carbon fiber tubes under axial load and crossover impact at angles [0/90] and [45/-45]. Rubber sponge was added at a density of 100 kg/m3. The specimens had a diameter of 42.58–48.24 mm depending on the thickness of the carbon fiber layer while the length was 100 mm. A hammer head velocity of 5.94 m/s was used at the point of impact and compared with modeling by FEA method. The results showed that there were 2 types of specimen damage: Type 1 was split and flared damage which was found in the group of laying fiber at angle [0/90], and this was further divided into 2 parts: collapse inward of the pipe and flare outward of the pipe. Type 2 damage occurred as a split and flared damage in shear force in the fiber at angle [45/-45]. In terms of maximum load and average load, it was found that the angle of fiber [45/-45]2 with rubber sponge reinforcement could reduce the maximum load better than the non-reinforced one by 41.13%. The energy absorption of the [45/-45]2 pipes were better than the others. The analysis of the FEA model found that the damage pattern and the resulting load tended to be in the same direction as the experiment and the damage of the weave in each layer could be observed as well.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"484 - 497"},"PeriodicalIF":1.9,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42618126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Network space analysis–based identification of road traffic accident hotspots: a case study 基于网络空间分析的道路交通事故热点识别研究

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-08-09 DOI: 10.1080/13588265.2022.2109446

Minxue Zheng, Long Zhu, Wang Zhan, Fang Zhu, Zhi-quan Sun, Lixia Li

{"title":"Network space analysis–based identification of road traffic accident hotspots: a case study","authors":"Minxue Zheng, Long Zhu, Wang Zhan, Fang Zhu, Zhi-quan Sun, Lixia Li","doi":"10.1080/13588265.2022.2109446","DOIUrl":"https://doi.org/10.1080/13588265.2022.2109446","url":null,"abstract":"Abstract This study proposed a method for identifying traffic accident (TA) hotspots. The method combines kernel density estimation (KDE) with network kernel density estimation (NKDE). The hotspots identified through NKDE can be overlaid on the high-risk areas (hot zones) identified using planar KDE, resulting in accurate hotspot identification. The research site was Zhenjiang City in Jiangsu Province, China; data on 410 fatal traffic accidents from 2017 to 2020 were collected. An average nearest neighbour (ANN) ratio (0.563) was obtained using the global auto nearest neighbour distance method; thus, the fatal TAs had a cluster-type distribution in the city. Subsequently, the maximum clustering distance (7812.842591 m) in the research site was analysed using Ripley’s K-function, which yielded a reasonable KDE bandwidth and enabled identifying the distribution of hot zones for fatal TAs. Precise hotspot identification was achieved by overlaying the results of NKDE-based analysis in these hot zones. The proposed method was verified using data on 131 fatal TAs during January to July 2021. The results revealed that, in Zhenjiang City, the identification rate for hot zones and hotspots in hot zones was 71.75% and 38.29%, respectively, and the overall hotspot identification rate was 27.48%, demonstrating the method’s ability to relatively accurately identify hotspot locations, information that can help traffic authorities implement preventive measures.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"108 - 115"},"PeriodicalIF":1.9,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46394099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Frontal crashworthiness optimization for a light-duty vehicle based on a multi-objective reliability method 基于多目标可靠性方法的轻型汽车正面耐撞性优化

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-08-09 DOI: 10.1080/13588265.2022.2109347

Jiangfan Zhang, Liangmo Wang, Tao Wang, Huiming Sun, Xiaojun Zou, L. Yuan

{"title":"Frontal crashworthiness optimization for a light-duty vehicle based on a multi-objective reliability method","authors":"Jiangfan Zhang, Liangmo Wang, Tao Wang, Huiming Sun, Xiaojun Zou, L. Yuan","doi":"10.1080/13588265.2022.2109347","DOIUrl":"https://doi.org/10.1080/13588265.2022.2109347","url":null,"abstract":"Abstract In the current research, the main method to improve passenger safety in collision accidents and achieve lightweight of body-in-white (BIW) is deterministic optimization. Due to the perturbations of the design variables, the deterministic optimization results will be invalid. To solve this problem, a multi-objective reliability method based on integrating surrogate model and Six-Sigma criteria is proposed. As an example, a finite element model of a light-duty vehicle has been developed and validated by full-scale crash test. Through analyzing the overall energy absorption performance during frontal crash simulation, six main parts have screened, and their thickness values have been selected as design variables. Increasing energy absorption and reducing the weight of the structure were selected as design objectives. The front wall invasion ( D ), the peak acceleration ( A ) and the energy difference ΙΔEΙ absorbed by the left and right side stringer are as constrains. Take the design variables obey normal distribution, and use a genetic algorithm method to generate Pareto solutions. The Pareto solutions of different iteration numbers with a sigma level of 4.5 are analyzed, and the results show that both deterministic optimization and reliability optimization can increase energy absorption. While deterministic optimization increases total energy absorption by 7.6%, but the total weight is increased by 6.9%. And the reliability of the two constraint functions front wall invasion and peak acceleration are lower than 60%. The reliability optimization decreases the weight by 5.3% and increases the energy absorption by 11.7%. Meanwhile, the value of constraint functions are lower, which is beneficial to the crashworthiness of the vehicle, and the reliability of them reaches more than 99%.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"449 - 461"},"PeriodicalIF":1.9,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42256263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Energy absorption investigation of octagonal multi-layered origami thin-walled tubes under quasi-static axial loading 八边形多层折纸薄壁管在准静态轴向载荷下的能量吸收研究

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-08-09 DOI: 10.1080/13588265.2022.2109765

Mojtaba Aghamirzaie, Amir Najibi, A. Ghasemi‐Ghalebahman

{"title":"Energy absorption investigation of octagonal multi-layered origami thin-walled tubes under quasi-static axial loading","authors":"Mojtaba Aghamirzaie, Amir Najibi, A. Ghasemi‐Ghalebahman","doi":"10.1080/13588265.2022.2109765","DOIUrl":"https://doi.org/10.1080/13588265.2022.2109765","url":null,"abstract":"Abstract Origami crash tubes have concerned nowadays due to their superior crashworthiness behaviour by controlling the initial buckling force and collapse modes. In this paper, a new multi-layered origami pattern is proposed and fabricated, and a numerical study is performed under quasi-static axial compressive loading and validated by the experimental result of the fabricated origami crash box. To compare the energy absorption efficiency of this proposed origami tube, its mechanical responses are normalised with the conventional octagonal tube. Moreover, the crashworthiness behaviour of 64 samples is investigated for the dihedral angle 2θ, outer layer height e, and module number M in the parametric study. It is demonstrated that by increasing M for tubes with a constant value of e, the critical angle of θ decreases. By increasing the value of e for tubes; while, considering the values of M and θ constant, the mechanical responses of the tubes increase, and these trends are valid as long as θ is below the critical angle. The number of modules M, angle θ, and outer layer height e have the highest effect on the mechanical responses. Finally, the results show that by maintaining the specific energy absorption of the conventional octagonal tube, the initial peak force can be reduced about 55%. In consequence, the proposed pattern reduces the initial peak force while maintaining the specific energy absorption.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"511 - 522"},"PeriodicalIF":1.9,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42383312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Accident dynamic response and injury mechanism of the collision accident between right-turning truck and cyclist straight 右转货车与直行骑车人碰撞事故的事故动态响应及伤害机理

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-08-09 DOI: 10.1080/13588265.2022.2109349

Lihua Wei, Yifan Tan, Haixu Liu, Y. Pu

{"title":"Accident dynamic response and injury mechanism of the collision accident between right-turning truck and cyclist straight","authors":"Lihua Wei, Yifan Tan, Haixu Liu, Y. Pu","doi":"10.1080/13588265.2022.2109349","DOIUrl":"https://doi.org/10.1080/13588265.2022.2109349","url":null,"abstract":"Abstract The proportion of accident between right-turning truck and cyclist straight is smaller than other types of collision accidents. But it is far likely for cyclists to suffer severe injury when it happens. In this paper, we pay attention to the effects of four parameters (truck speed, collision angle, friction coefficient, and truck driver's reaction time) on the dynamic response process and the injury level of cyclist of the accident between right-turning truck and cyclist straight. We found that all the parameters have a great impact on those. Two types of dynamic response processes exist. In step one and step two, the injury values of cyclist were all below their threshold when the truck speed was less than 27 km/h. But when the truck speed is greater than or equal to 27 km/h, the injury value of the chest is higher than 60 g. Meanwhile, HIC and the resultant acceleration of the chest increase with truck speed. Most of the injury value of the crushed part exceeds the fixed value when step three happened. So, slowing down the truck speed and reducing the possibility of cyclist being crushed can improve the safety level of cyclists.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"462 - 471"},"PeriodicalIF":1.9,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44321682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the collision characteristics of a subway coupler 地铁车钩碰撞特性研究

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-08-08 DOI: 10.1080/13588265.2022.2109817

Haoxu Ding, T. Zhu, S. Xiao, Guangwu Yang, Bing Yang, Ruijuan Lv

{"title":"Study on the collision characteristics of a subway coupler","authors":"Haoxu Ding, T. Zhu, S. Xiao, Guangwu Yang, Bing Yang, Ruijuan Lv","doi":"10.1080/13588265.2022.2109817","DOIUrl":"https://doi.org/10.1080/13588265.2022.2109817","url":null,"abstract":"Abstract Derailment accidents caused by coupler buffer devices should not be underestimated. In this study, a particular type of subway was considered the research object, and a nonlinear finite element model of train collisions with a detailed coupler was established to study the collision characteristics of the coupler under different working conditions. First, the nonlinear mechanical characteristics of the coupler were analyzed. Then, a finite element model, including the energy absorption characteristics of the buffer and the collapse tube, the failure characteristics of the overload protection device, and the motion characteristics of the nodding and shaking head, was established and its reliability was verified. On this basis, a collision finite element model of a subway with four sections was developed. The attitude motion of the couplers and its influence on the derailment behavior of the vehicle was studied under the condition of initial vertical deviation or lateral deviation of the active and passive head couplers during their operation period. The results show that when the collision velocities are equal, the initial state of the head coupler barely affects the axial action characteristics and the pitching deflection angle attitude of the middle couplers; however, it has a certain effect on the yaw deflection angle. Furthermore, the initial state of the head coupler has a significant influence on its motion. The initial vertical deviation of the head coupler increases the derailment risk of the second section of the active subway. Moreover, the initial lateral deviation of the head coupler increases the derailment risk of the active subway and the first section of the passive subway. When the utilization rate of the head coupler is approximately 69%, the derailment risk of the vehicle is reduced.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"537 - 551"},"PeriodicalIF":1.9,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48745857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Safety of active pre-collision seat rotation strategies for autonomous vehicles: injury risk evaluation of occupant’s neck 自动驾驶汽车主动碰撞前座椅旋转策略的安全性：乘员颈部损伤风险评估

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-07-01 DOI: 10.1080/13588265.2022.2075099

Jiexiong Wang, N. Yang, Tao Liu

{"title":"Safety of active pre-collision seat rotation strategies for autonomous vehicles: injury risk evaluation of occupant’s neck","authors":"Jiexiong Wang, N. Yang, Tao Liu","doi":"10.1080/13588265.2022.2075099","DOIUrl":"https://doi.org/10.1080/13588265.2022.2075099","url":null,"abstract":"Abstract The development of autonomous driving technology has engendered new requirements for the safety of the occupants of autonomous vehicles. Different variants of seat configurations, including face-to-face rides and rotating seats, have been implemented in autonomous vehicles. Furthermore, pre-collision active seat rotation strategies have been proposed for the safety of the occupants of autonomous vehicles. However, further evaluations are required to determine whether the active seat rotation strategy could cause injuries to the occupants during a significantly rapid rotation process. In this study, two types of multi-rigid body seat-occupant models and a finite element model of the occupant’s cervical spine were designed. The validity of the multi-rigid body model for the seat occupant was verified through a frontal collision simulation test. Considering the influence of different seat types and rotation directions on the risk of neck injuries to the occupants, four simulations were conducted based on the condition that the seat rotated by 90° in 200 ms. The kinematic and biomechanical aspects of the risk of injuries to the occupant’s cervical spine during the active seat rotation strategy were assessed, and the essential causes of these injuries were discussed. The results indicate that, in the absence of leg baffles and foot supports, seat rotation toward the diagonal line of the seatbelt poses different degrees of risk of injuries to the cervical spine, platysma, sternocleidomastoid, common carotid artery, external jugular vein, and internal jugular vein. Therefore, the seats of highly or fully autonomous vehicles should be designed to prevent this scenario.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"288 - 297"},"PeriodicalIF":1.9,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47022099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On the pacifying influence of an elastomeric foam core on the failure mechanism of sandwich composites with various skin layups 弹性泡沫芯对不同层数夹层复合材料破坏机理的安抚作用

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-06-28 DOI: 10.1080/13588265.2022.2089377

A. Nazari, F. Taheri

{"title":"On the pacifying influence of an elastomeric foam core on the failure mechanism of sandwich composites with various skin layups","authors":"A. Nazari, F. Taheri","doi":"10.1080/13588265.2022.2089377","DOIUrl":"https://doi.org/10.1080/13588265.2022.2089377","url":null,"abstract":"Abstract The selection of a crashworthy core for sandwich composite construction has been aimed pursued in various applications. In this article, the response of sandwich beams consisting of elastomeric foam core and laminated fibre-reinforced skins with various layup sequences hereafter referred to as (EFCS) beams is investigated experimentally and numerically. This sandwich configuration provides several advantages for structural applications since the conventionally used rigid foam cores have relatively low crushing strength. The incorporation of the elastomeric foam has been found to enhance the post-failure stability and residual strength/crashworthiness of sandwich composite beams due to the pacifying influence of the core on the failure mechanism, which was further examined by numerical simulations. Both the hyperelasticity of the foam core and the progressive damage of the composite skins were accounted for in the numerical simulation. The efficiency of EFCS beams was established by comparing their performance to their laminated composite counterparts. The results evidence the promising performance of EFCS beams, especially in the context of their residual strength, which could be as high as 70% of their ultimate strength, as well as their enhancing energy absorption capacity. Furthermore, the performances of EFCS beams with angle-ply laminated skins were also examined numerically. The results reflect more advantage of using laminated skins with some specific fibre orientations.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"402 - 417"},"PeriodicalIF":1.9,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48909659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-plane crushing of a novel sinusoid-curved honeycomb under static and dynamic loadings 一种新型正弦曲线蜂窝在静态和动态载荷作用下的平面破碎

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-06-28 DOI: 10.1080/13588265.2022.2093059

Shilong Wang, Min Zhang, Shuguang Zha, Yu Ding

{"title":"In-plane crushing of a novel sinusoid-curved honeycomb under static and dynamic loadings","authors":"Shilong Wang, Min Zhang, Shuguang Zha, Yu Ding","doi":"10.1080/13588265.2022.2093059","DOIUrl":"https://doi.org/10.1080/13588265.2022.2093059","url":null,"abstract":"Abstract The in-plane crushing response of a novel honeycomb consisting of sinusoid-curved ligaments is comparatively analyzed under quasi-static and dynamic loadings using numerical and theoretical methods. The finite element models for ABAQUS/Explicit are validated against the experimental results obtained from the quasi-static tests on the additively manufactured translational-sinusoid honeycomb (TSH) and symmetrical-sinusoid honeycomb (SSH). Quantitatively, the effect of impact velocity and relative density on the deformation mode is revealed by summarizing the deformation maps of SSH and TSH. It implies that the critical velocities at which the transformation of deformation mode happens are larger for SSH than those for TSH. Cells of TSH prefer to be tightly stacked together due to the chirality-liked configuration, whereas the symmetrical configuration strengthens the buckling resistance of SSH cells and the provisional and full densification states would sequentially experience in the crushing process. Investigation on the crushing performance further revealed that the crushing strength and the energy absorption capacity of SSH are slightly higher than those of TSH. In contrast, the densification strain of TSH is larger than that of SSH for a wide range of impact velocity. Regarding the deformation mechanism of representative units, theoretical models are proposed to evaluate the crushing strength of the sinusoid-curved honeycombs. Good agreement between theoretical predictions and numerical results is obtained under both quasi-static and dynamic loadings. Moreover, the effect of the cell topology on the mechanical performance of sinusoidal-curved honeycomb is discussed.","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"418 - 434"},"PeriodicalIF":1.9,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46790416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Crashworthiness analysis and shape design optimization of corrugated tubes for railway application 铁路用波纹管的耐撞性分析及形状设计优化

IF 1.9 4区工程技术

International Journal of Crashworthiness Pub Date : 2022-06-08 DOI: 10.1080/13588265.2022.2083748

Se-Ho Ahn, Hyun-seung Jung, Jin Sung Kim, Seung-wan Son

{"title":"Crashworthiness analysis and shape design optimization of corrugated tubes for railway application","authors":"Se-Ho Ahn, Hyun-seung Jung, Jin Sung Kim, Seung-wan Son","doi":"10.1080/13588265.2022.2083748","DOIUrl":"https://doi.org/10.1080/13588265.2022.2083748","url":null,"abstract":"Abstract Thin-walled tubes have been widely used as energy-absorbing devices since they are light and have high energy absorption efficiency. However, the downside is that conventional thin-walled tubes usually exhibit an excessive peak crushing force (PCF) and large fluctuations in the force-displacement curve. Corrugated tubes are introduced to reduce the PCF and to increase the stability of energy-absorbing devices. Since the performance of corrugated tubes is highly influenced by their geometry, design optimization methods can be utilized to optimize the performance of corrugated tubes. It is difficult to apply conventional gradient-based optimization methods in crashworthiness analysis because of the strong nonlinearity and large computational time. In this paper, we utilize shape design optimization based on an adaptive surrogate model. The EA is maximized in transition crushing mode (T-mode), which is the boundary between progressive crushing mode (P-mode) and simultaneous crushing mode (S-mode), while simultaneously optimizing the contact force efficiency (CFE).","PeriodicalId":13784,"journal":{"name":"International Journal of Crashworthiness","volume":"28 1","pages":"390 - 401"},"PeriodicalIF":1.9,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47516767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4