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东京汐留住友大厦为坐落于东京汐留开发区超高层综合建筑,该建筑分为上下两个完全不同的功能,上部为办公区域,下部为带有超大空间酒店大堂的酒店区域。本文介绍了对于这特殊形式的建筑,结构设计师如何利用中间层隔震技术和结构的固有振动特性,使结构通过隔震体系(隔震层)的能量吸收能力,最有效地达到降低地震力的设计效果。
末冈利之, 鸟井信吾, 常木康弘
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Current Status and Prospect of Recycling Technology of Wind Turbine Blades [PDF]
[Introduction] The growth of wind power industry is accelerating faster than ever worldwide, at the same time, the waste generation from end-of-life wind turbine blades is expected to peak in recent years.
Biqiong DONG +5 more
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Numerical study on anti-impact characteristics of energy absorbing column with multicellular square tube filled with aluminum foam [PDF]
Aiming at the insufficient anti-impact performance of existing components of the energy-absorbing anti-impact support, a foam aluminum filled multicellular square tube structure is proposed.
Heng ZHU +5 more
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当前工业园区针对不同介质、等级的余能进行了针对性的利用来满足用户单一的能量需求,这样的利用方式通常规模小、能量转换形式单一,且未对余能进行深度利用,因此余能利用率较低。对具体余能资源类型进行分析,由余能发电、余能制热与制冷技术形成综合能源供能系统,并构建双层优化算法模型,第一层采用遗传算法优化设备容量变量,第二层采用数学规划求解方法优化各设备24 h逐时出力。基于3种设备组合场景进行优化,案例结果表明通过对余能进行多方式利用,完成冷热电联供,可在增加少量投资成本的情况下,节省大量外部购能费用 ...
葛晨晨 +4 more
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An Experimental Investigation on Low-velocity Impact Response of Abaca/Epoxy Bio-composite
在汽車行業的許多結構和非結構應用中,NFRC(天然纖維增強複合材料)被證明是現有玻璃/碳纖維增強複合材料的潛在材料替代品。本文介紹了兩種不同取向 [90°/0°/0°/90°] 和 [45°/0°/0°/45 °],使用錐形衝擊器承受 10.24 J 的衝擊能量。基於作為能量吸收處理的力-時間響應和衝擊能量-時間歷史來評估它們的性能和損傷特性。還進行了掃描電子顯微鏡 (SEM) 分析以研究斷裂表面的微觀結構信息並與最可能的故障原因相關聯。照片和 SEM 圖像證實了纖維主要失效。實驗結果表明,與交叉層相比,
Mahaboob Subhani Shaik +1 more
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拓扑互锁是一种新兴的结构设计理念,因特别的构成和连接方式,具有较优的力学性能,包括杰出的结构韧性、抗裂纹延展及抗局部破坏能力、较好的能量吸收能力等,近年来在众多领域内引起广泛关注。很多学者对此展开多方面的创新研究,取得了很大进展。首先在性能特征方面,目前关于拓扑互锁材料在准静态变形过程中的力学性能的分析研究已经较为全面,结构动态响应的分析也已有所开展; 基于力学性能的研究,材料结构优化是近年研究的一个重点、正在系统化地完善之中; 在工程应用方面,拓扑互锁结构在工程防护、航天材料、建筑设计 ...
Yu, Tong Xi +3 more
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Evaluation on crashworthiness and energy absorption of composite light airplane [PDF]
[[abstract]]The main aim of this study was to explore the safety differences when using aluminum alloy and three different fiber reinforced composites as material for the cockpit and fuselage of light aircraft under crash landing.
Pu-Woei Chen
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Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact [PDF]
ObjectivesIn this paper, an orthogonal braided glass fiber composite sandwich panel with a PVC foam core and dimensions of 150 mm×100 mm×26 mm is selected as the research object in order to study the impact mechanical properties of composite sandwich ...
Chongyi CHEN +6 more
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In-situ Micro-CT analysis of deformation behavior in sandwich-structured meta-stable beta Ti−35Nb alloy [PDF]
Beta Ti−35Nb sandwich-structured composites with various reinforcing layers were designed and produced using additive manufacturing (AM) to achieve a balance between light weight and high strength.
Huang, Wei Ying +6 more
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为摩托车头盔的安全性设计,需要研究在冲击载荷下内衬泡沫的能量吸收能力对摩托车头盔防护性能的影响。该文建立了有限元数值分析头盔模型,依据欧洲经济委员会(ECE)的法规ECE R22.05的动态测试方法,验证该模型的有效性。改变头盔不同测试点下的泡沫密度,进行了12个跌落的仿真试验。结果表明:在头盔的前部、冠部和后部测试点区泡沫密度由40 kg/m3增加到80 kg/m~3时,泡沫的能量吸收能力逐渐增大,头部冲击能量衰减得更快,导致3个测试点头部颅骨骨折的风险从25%、55%、39%分别增大至53%、96%、
何伟 +4 more
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