Results 51 to 60 of about 91 (64)
Jianzhu Gangjiegou Jinzhan, 2018 "互"形装配式刚性节点将梁上、下翼缘拼接板交错布置在拼接梁与悬臂梁的外侧,拼接板与梁的焊缝均在工厂完成,现场只进行高强螺栓连接的一种节点形式。为了研究该新型装配式刚性节点的力学性能,通过改变翼缘拼接板宽度、厚度和摩擦系数设计了3组试件,应用ABAQUS软件进行有限元模拟分析。结果表明:拼接板厚度越大试件极限承载力越大,耗能越好;拼接板宽度对试件的受力性能影响不大;摩擦系数对试件的耗能影响明显,摩擦系数越大试件耗能性能越好。综合来看,"互"形装配式刚性节点具有良好的耗能和延性机理。此外 ...
郁有升, 张孝栋, 于志军
doaj
[Analysis of risk factors for early failure of simple taper retentive implants]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhang X +8 more
europepmc +1 more source
[The design and assessment of a novel simulated training system for cardiac surgery]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2018 Liang S +5 more
europepmc +1 more source
Immediate implantation of simple taper retentive implants in chronic apical infected teeth in the posterior region: a 5-year clinical observation. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhang X +7 more
europepmc +1 more source
[A finite element analysis of petal-shaped poly-axial locking plate fixation in treatment of Y-shaped patellar fracture]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2017 Meng D, Ouyang Y, Hou C.
europepmc +1 more source
Jianzhu Gangjiegou Jinzhan为研究方钢管混凝土柱与H型钢梁槽形端板连接节点的抗震性能，对3个槽形端板连接节点和1个普通端板连接节点进行了低周往复加载试验，研究了节点的破坏机理与特征、承载能力、节点区应力分布以及抗震性能等，分析了节点构造参数不同对其抗震性能的影响。在试验研究基础上，采用ABAQUS有限元软件进行了有限元适应性验证和参数分析，对比了槽形端板连接节点和普通端板连接节点承载力、延性和初始转动刚度的差异性。试验研究表明：试件均在端板和梁翼缘连接处出现对接焊缝撕裂以及焊缝附近母材断裂现象，普通端板发生了明显翘曲 ...
高春彦 +3 more
doaj
[Clinical efficacy of demineralized dentin matrix particles in immediate implantation for bone defects in posterior region: a 1 to 5-year follow-up study]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiWu H +7 more
europepmc +1 more source
[Advances in aquatic bio-inspired medical adhesives]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2019 Wu Y, Li J.
europepmc +1 more source
Jianzhu Gangjiegou Jinzhan轮载下正交异性钢桥面板的局部效应显著，相邻各疲劳易损细节疲劳行为相互影响，特别是随着某个细节裂纹扩展，相邻细节疲劳应力可能会增大，桥面板疲劳性能呈加速劣化趋势。疲劳应力响应及桥面板性能劣化评估，已成为钢桥面板运营期面临的挑战和亟待进行的工作。为合理评估开裂正交异性钢桥面板的疲劳性能演化情况，基于既有足尺模型疲劳试验，综合采用有限元程序ANSYS和Franc3D的多尺度交互技术模拟钢桥面板典型疲劳易损细节裂纹扩展行为，探究裂纹扩展过程中各关键细节（顶板与U肋连接焊缝，U肋与横隔板连接焊缝，横隔板开孔处 ...
叶华文 +4 more
doaj +2 more sources