Results 91 to 100 of about 20,406 (144)

断路器用液压操动机构储能碟簧的可靠性研究

Gaoya dianqi, 2015
碟簧作为储能元件是高压断路器用液压操动机构的重要核心部件,其优点是能在很小变形的条件下,承受范围变化很大的载荷。储能碟簧的可靠性直接影响着液压操动机构及高压断路器的整体可靠性。笔者通过碟簧力学特性分析、碟簧应力计算、碟簧力学特性曲线试验、碟簧力学时效性试验及单片碟簧断裂后对整组碟簧性能的影响试验,验证了某高压断路器用液压操动机构储能碟簧的可靠性。
周仙娥, 史芳颖, 康子雄, 张润田   +3 more
doaj  

钢结构半刚性梁柱节点连接的杠杆力分析与计算

Jianzhu Gangjiegou Jinzhan, 2004
本文采用三维非线性有限元分析方法,讨论了钢结构半刚性梁柱节点连接的杠杆力分布及杠杆效应对节点连接受力性能的影响。按塑性设计理论给出了节点连接杠杆力的最大值,提出了保证节点工作性能安全、可靠的计算方法,以利于工程设计。
王燕, 厉见芬
doaj  

自复位双肢剪切型耗能段的滞回性能与力学模型

Jianzhu Gangjiegou Jinzhan
基于双肢短剪切型耗能段的耗能机制、形状记忆合金（shape memory alloy， SMA）棒材的超弹性特性和碟形弹簧的恢复力特性，提出了一种自复位双肢剪切型耗能段（self-centering coupled shear link， SC-CSL），该耗能段可有效提高中心支撑钢框架结构的抗震性能和震后恢复能力。采用校正的有限元法对SC-CSL的力学性能进行分析，研究其滞回性能和破坏模式；随后对考虑了SMA棒材直径和碟形弹簧刚度的10个模型进行了参数分析。结果表明：SC ...
朱剑波, 曾思智, 常丽青, 邵铁峰, 胡淑军   +4 more
doaj  

GIS用三元乙丙、丁腈、氯丁橡胶O形密封圈物理性能比较分析

Gaoya dianqi, 2008
为了评价GIS常用三元乙丙、丁腈、氯丁橡胶O形圈性能的优劣,在相同试验条件下笔者对3种橡胶进行了试验。通过试验结果分析,给出了3种橡胶力学性能、耐受热老化和天候老化性能、耐受液体浸渍性能和低温性能的优劣排序,可以作为GIS厂家技术人员优选O形圈的参考。
高亚娟, 赵选勃, 王文昌
doaj  

[2024 American Academy of Orthopaedic Surgeons (AAOS) Clinical Practice Guideline: An interpretation of the diagnosis and management of acute isolated meniscal injury]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Xiong Q, Hu Y, Fan L, Li J, Fu W.
europepmc   +1 more source

[Research on tissue regeneration and engineered scaffold materials in prevention and treatment of lymphedema]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yuan S, Deng C.
europepmc   +1 more source

[Research progress on the causes of pain in knee osteoarthritis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wei N, Zheng Z.
europepmc   +1 more source

[A time-frequency transform and Riemannian manifold-based domain adaptation method for motor imagery in brain source space]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Qi Q, Li M.
europepmc   +1 more source

[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Professional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons, Professional Committee Of Spine Chinese Association Of Rehabilitation Medicine, The Second Medical-Rehabilitation Integration Working Committee Chinese Association Of Rehabilitation Medicine, Spine And Spinal Cord Injury Repair Study Group The Third Professional Committee Of Neurorestoratology Chinese Medical Doctor Association.   +3 more
europepmc   +1 more source

[Mechanisms and clinical research progress of mesenchymal stromal cell therapy for steroid-refractory acute graft-versus-host disease]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Wang N, Xu ZL, Liu DH.
europepmc   +1 more source