Results 41 to 50 of about 1,726,000 (149)
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The surging demand for high‐performance NdFeB magnets has made it essential to achieve ultrahigh coercivity while minimizing the consumption of heavy rare earths. To tackle this challenge, this study proposes a Dy/Tb bilayer grain boundary diffusion strategy and systematically investigates the co‐diffusion behavior of Dy and Tb.
Rui Chang +7 more
wiley +1 more source
, 2013 登记证号：2013SR160030 本软件是基于MPI区域分解并行理论开发的一套有限元流场计算软件。软件基于不可压缩涡量流函数方程及粘性分裂理论，分别用有限元方法求解对流项及扩散项，具有很好的稳定性。线性方程组求解采用预处理共轭梯度法，计算效率高且并行方便。软件采用非结构网格及区域分解并行算法，算法不依赖于网格及计算域，对于任意形状的计算域均可实现并行计算，且并行结点个数任意。因此，相比有限差分法或谱方法本软件具有更好的工程应用前景。
林缅, 许雷阁
core +1 more source
Dianci bileiqi, 2016 结合我国电力设施抗震设计规范（GB 50260—2013）,试验数据及有限元模型,对高压电气设备法兰胶装节点弯曲刚度进行研究。采用有限元方法对500kV氧化锌避雷器建立三种不同模型,计算对比三种模型,研究法兰节点弯曲刚度。提出法兰节点刚度EI的修正系数,提供一种新的建立法兰胶装节点有限元模型的方法。
陈巍, 范荣全, 曹枚根, 卓越
doaj
Jianzhu Gangjiegou Jinzhan, 2022 采用理论推导和有限元方法，对冷成型不锈钢矩形管截面受弯构件的挠度发展与计算方法进行研究。在考虑截面应力分布和弯角影响的基础上推导出截面边缘屈服弯矩的计算公式，通过与301个算例的数值积分结果进行比较，验证了该计算公式的准确性。采用有限元软件ABAQUS建立了考虑几何初始缺陷和冷弯残余应力的精细有限元分析模型，依据现有试验结果对模型的准确性进行了验证。基于有限元分析结果对近似曲率法的初始刚度进行了修正，提出了修正的冷成型不锈钢矩形管截面受弯构件的挠度计算方法 ...
袁焕鑫, 郭鹏, 郭宇, 杜新喜
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Semiconductor photocatalysis represents a pivotal frontier in the quest for sustainable energy and environmental remediation. Among the diverse catalytic materials, Bismuth Oxychloride (BiOCl) has emerged as a particularly promising candidate due to its unique layered structure, featuring [Bi2O2]2+ layers intertwined with halogen ions, which ...
Liu Han +5 more
wiley +1 more source
, 2009 有限元法在岩土工程中的应用越来越广泛。随着问题规模的增大,对有限元的计算能力要求越来越高。岩土有限元计算形成的方程组的系数矩阵具有大型稀疏对称的特点。针对系数矩阵的特点,采用稀疏压缩存储的方式,可以大大节省内存,使在普通的PC机上求解大规模有限元问题成为可能 ...
吴梦喜, 余进
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四川大学学报. 自然科学版, 2012 作者将子格粘性法和非协调有限元方法相结合,应用到定常不可压缩NS方程,并采用C-R元建立了两种子格粘性非协调有限元格式,然后对其进行了理论分析.数值实验结果表明,子格粘性法与通常的Galerkin混合有限元相比,在高雷诺数时仍然具有较好的稳定性,在粗网格上能达到较高的精度.
白良, 刘程熙, 唐金波
doaj
Haiyang gongcheng zhuangbei yu jishu, 2023 吸力基础广泛应用于大型海洋工程结构物的安装固定。本文使用有限元分析软件Abaqus，基于耦合欧拉-拉格朗日方法（CEL）建立三维大变形有限元分析模型，对吸力基础安装贯入时土塞隆起过程进行了有限元数值模拟，将有限元模拟结果与理论计算进行综合分析，得到了土塞隆起及其削弱吸力基础极限承载力的机理。
徐帆 +4 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
wiley +1 more source
Structural Modulation of Magnetic Softness in Fe‐Based Amorphous Alloys via Pulse Current Training
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Fe‐based amorphous alloys, despite their intrinsically low magnetocrystalline anisotropy, suffer from quasi‐dislocation dipoles and localized stress fields that impede domain‐wall motion and increase coercivity. Here, we introduce pulse current training (PCT) as an energy‐efficient technique to overcome these limitations in a Fe76Si9B10P5 ...
Shumin Ye +13 more
wiley +1 more source