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| 1 | Elastic-plastic contact force history and response characteristics of circular plate subjected to impact by a projectile显示文摘一个新有弹性的塑料影响接触模型在这篇论文被建议。在有限变丑由为有弹性的塑料采用最小的加速的原则继续,并且在有限差别方法的帮助下,建议模型处于集中地受到射弹影响的一个夹钳的薄圆形的盘子的动态反应的问题被使用。目标板的影响力量历史和反应特征详细被学习。影响力量和板偏转的理论预言在 LDA 试验性的数据的与那些的好协议。最大的影响 force/transverse 偏转对影响速度的线性表情根据理论结果被给。 | L.B.Chen F.Xi J.L.Yang Solid Mechanics Research Center,Beihang University,Beijing 100083.China Shandong Institute of Architecture and Engineering,Jinan 250014,China | 2007 | Acta Mechanica Sinica2007，23，4： | 5 |
| 2 | Elastic-plastic behavior of a semicircular frame being pressed against a rigid plane显示文摘作为一个简化结构的模型,一个半圆形的框架被用来学习一个飞机机身的防撞性行为。伪静电干扰在它对僵硬地面被压的过程的一个半圆形的框架的大有弹性的塑料变丑被分析。首先基于线性有弹性的假设,伪静电干扰框架的大变丑接触法能被划分成三个阶段,即,点接触,线接触和 buckling 以后。借助于一个射击方法,在象在三个阶段的弯曲矩的分发一样的排水量和接触力量之间的关系被获得。由为半圆形的框架假定一种有弹性的、完美地塑料的时刻弯曲关系,然后,接触法详细被分析揭示塑料倒塌机制,塑料绞链和力量排水量关系旅行。以便验证分析,一个初步的实验被进行,在哪个有夹钳的结束的半戒指的二种类型被一个僵硬盘子压。另外,数字模拟被采用 ABAQUS 分析矩形的代表性的横梁和 I 型标也进行。最后,理论预言与试验性的结果和数字答案相比,证明有弹性的塑料分析能预言接触法很好。 | X.W.Zhang J.L.Yang T.X.Yu | 2008 | Acta Mechanica Sinica2008，24，4： | 2 |
| 3 | 查看详情显示文摘 | G.L.Lu K.M.Deng H.P.Wu J.L.Yang and X.Wang | | 0，，05： | 1 |
| 4 | Rare-earth-niobate high-entropy ceramic foams with enhanced thermal insulation performance显示文摘The introduction of porous structures into high-entropy ceramics is expected to further improve its thermal insulation performance.In this work,a series of novel rare-earth-niobate high-entropy ceramic foams((Dy_(0.2)Ho_(0.2)Y_(0.2)Er_(0.2)Yb_(0.2))_(3)NbO_(7))with hierarchical pore structures were prepared by a particle-stabilized foaming method.Atomic-scale analysis reveals that high entropy causes atom displacement and lattice distortion.The high-entropy ceramic foams exhibit high porosity(90.13%-96.13%)and ultralow thermal conductivity(0.0343-0.0592 W/(m·K))at room temperature.High-entropy ceramic foam prepared by a 20 wt%slurry sintered at 1500℃has the porosity of 96.12%and extremely low thermal conductivity of 0.0343 W/(m·K).The existence of walls and secondary pores contributes to reduced thermal conductivity.There is a temperature difference of over 800℃between frontside and backside of the sample under fire resistance test.The research indicates that these as-prepared high-entropy ceramic foams are expected to be promising thermal insulation materials. | R.W.Yang Y.P.Liang J.Xu X.Y.Meng J.T.Zhu S.Y.Cao M.Y.Wei R.X.Zhang J.L.Yang F.Gao | 2022 | Journal of Materials Science & Technology2022，，21： | 1 |
| 5 | A novel classification method for mild adolescent idiopathic scoliosis using 3D ultrasound imaging显示文摘Mild adolescent idiopathic scoliosis(AIS),with Cobb<20°,was hypothesized as the right stage to intervene to prevent progression.AIS curve can be categorized into either structural or non-structural depending on the spine morphology(flexibility).Using X-ray to characterize AIS curves remains the clinical gold standard whilecompromising the risks of radiation exposure.In previous works,3D ultrasound imaging had proved the reli-ability of the coronal spinal curvature measurement This research aimed at developing a mild AIs clasificationscheme through examining spine flexibility using 3D ultrasound imaging.For the preliminary study,90 mild AIS subjects(21 M and 69 F;Age:14.5±1.7 years old;Cobb:18.2±6.4°)underwent both 3D ultrasound and X-ray scanning on the same day.For each case,a clinician measured Cobbs and denoted major curve as ground truth.Bending Asymmetry Index(BAl)was developed to indicate the presence of a possible structural curve.The curve classification was coded to a modfied Lenke classification for mild cases(m-Lenke).The results of 3D ultrasound classification were evaluated with the X-ray.It was shown that 70.1%of the subjects had identical curve clssification results and 72.0%had the correct major curve detection.Lumbar-dominated curves had distinctive performance(p=0.91,r=0.91)against others.The study demonstrated the possibility of a 3D ultrasound-based method for mild AIS curve classification.Thediscrepancies could be partially explained by the limitations of the ultrasound scanning in proximal thoracicreg ion.Subsequent studies will validate the proposed method with a larger cohort. | D.Yang T.T.Y.Lee K.K.L.Lai Y.S.Wong L.N.Wong J.L.Yang T.P.Lam R.M.Castelein J.C.Y.Cheng Y.P.Zheng | 2021 | Medicine in Novel Technology and Devices2021，，3： | 0 |
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