Results 31 to 40 of about 651,027 (126)
, 2016 本发明提供一种模拟循环载荷下板锚极限动承载力的测试系统，包括：板锚模型、用于将板锚模型的锚胫限定为垂直于床面移动的十字支撑架、循环载荷加载装置和测量装置；循环载荷加载装置用于向锚胫施加循环载荷，包括将电机输入的匀速转动转换为模拟正弦的往复转动的传动装置、将往复转动转化为指定常荷载与模拟正弦荷载叠加的循环荷载位移载荷转化装置和用于根据板锚模型的位移调整绳索的长度，使循环载荷的幅值不因多周期的累积板锚模型位移而发生衰减的位移修正装置。本方案能有效控制循环载荷的幅值、获得循环拉拔过程中板锚周围土体的孔隙水压 ...
胡存, 高福平, 汪宁
core +2 more sources
Jianzhu Gangjiegou Jinzhan, 2023 以荷载作用方向、截面类型、肢高宽比为参数，进行了4根组合L形冷弯钢管混凝土柱的拟静力试验，分析了各参数对试件破坏形态、承载力、延性及耗能等抗震指标的影响。并应用ABAQUS有限元软件建立了数值分析模型，分析了钢管厚度、轴压比等参数对试件承载力和延性影响。结果表明：试件的主要破坏模式为钢管鼓曲开裂，异形钢管的制作方式对试件破坏形态有一定影响，冷弯钢管组合焊接的试件未出现角部开裂，钢板组合焊接的试件出现角部纵向焊缝开裂现象，加快了试件的变形发展；荷载作用方向对试件延性和耗能能力影响不大 ...
王逸伦, 杨锋
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang +6 more
wiley +1 more source
, 1984 本文采用曲面间的保角变换,将球面润滑问题变换为平面润滑问题,导出等角螺线槽球形轴承的承载能力和气膜刚度的近似解析表达式和最佳槽型参数 ...
傅仙罗
core +2 more sources
Shuitu Baochi Xuebao, 2017 为分析汉中市水域承载力的变化，反映水域利用的安全程度，以寻求提高水域承载力的途径与方法，对汉中市水域生态承载力进行了计算和分析。结果表明：从2001—2013年，汉中市水域生态承载力整体处于安全状态，汉台区的生态承载力指数为0.56，处于基本安全状态，其余各县的生态承载力指数均小于0.50，处于安全状态。其中，宁强、略阳、镇巴、留坝、佛坪5个县的生态承载力指数小于0.10，洋县、西乡、勉县3个县的生态承载力指数在0.20～0.30，南郑县的生态承载力指数在0.30～0.40，城固县的生态承载力指数在0 ...
张养安, 郑志峰, 王永红
doaj
People and Nature, Volume 8, Issue 2, Page 270-282, February 2026.Abstract Chinese consumer demand for ivory threatens vulnerable African elephant populations, despite long‐standing efforts to combat the illegal wildlife trade. Behavioural science approaches have been proposed to address these systemic behaviours. However, their robust use remains uncommon in demand management interventions.
Molly R. C. Brown +3 more
wiley +1 more source
Integrative Conservation, Volume 4, Issue 3, Page 476-490, September 2025.The leaf functional traits of angiosperms and gymnosperms in mountain ecosystems significantly influence phyllosphere fungal diversity. These traits are critical for understanding fungal stress resistance and elevational adaptation, which aids in predicting plant responses to climate change.
Xiaocheng Yu +7 more
wiley +1 more source
Sport and Human Rights Future Perspectives and Medico‐Legal Implications
World Medical &Health Policy, Volume 17, Issue 2, Page 253-259, June 2025.ABSTRACT In recent years have seen increasing discussion about sport as a human right. The right to sport has long been recognized as fundamental by the international community, but following the COVID‐19 pandemic, this discussion has become increasingly central to global policies.
Lina De Paola +4 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan为研究主管承载下碳纤维增强聚合物（CFRP）加固X形管节点在支管轴压作用下的承载力，完成了4个X形管节点的轴压加载试验。X形管节点试验过程中，实测了轴压承载力、位移以及相贯区域应变数据，研究了试件的失效模式、轴压承载力及应变发展规律。通过有限元软件ABAQUS，建立了主管承载下CFRP加固X形管节点的有限元模型，将数值模拟结果与试验测试结果进行对比，验证了建立的有限元模型的准确性。研究了初始承载率、支管与主管直径比、主管径厚比和CFRP缠绕层数对X形管节点承载力的影响 ...
黄超, 邵永波, 欧佳灵, 曹艺濒
doaj +2 more sources
Integrative Conservation, Volume 3, Issue 4, Page 426-437, December 2024.Globally, human‐use landscapes are being reported to be large carnivore habitats. The study examines the spatial variation of leopard density in the forest‐human use landscape mosaic of the Duars region of West Bengal. Tea estates overshadow forested areas in terms of the absolute density of leopards, reiterating the potential of human‐use areas to be ...
Anish Paul +4 more
wiley +1 more source