为促进建筑工业化和住宅产业化，提高框架-支撑结构体系的抗震性能，提出了部分包覆钢-混凝土组合（partially encased composite brace， PEC）支撑。对3个采用PEC支撑的PEC框架试件和1个采用钢支撑的PEC框架试件进行了低周往复加载试验，研究了各试件的破坏模式、初始刚度、极限承载力、耗能能力等指标。结果表明：PEC框架与PEC支撑之间协同工作性能良好；PEC支撑试件相比纯钢支撑具有优势，初始刚度提升约24%~41%、极限承载力提升约29%~36%，耗能能力提升约7%~17%
庄项平 +6 more
core
[Structural design and evaluation of bone remodeling effect of fracture internal fixation implants with time-varying stiffness]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiSun H +5 more
europepmc +1 more source
Mechanical behavior of typical atomic interface and bonding interface
, 2019 界面在自然界与工业界广泛存在，小到晶体的孪晶界面，大到地球的地层结构，从生物中细胞膜界面，到工业上的复合材料。界面作为一类缺陷，它本身的力学性能将对整体结构的性能产生决定性作用。尤其是界面的弹塑性性能，将主导整体的材料强度和韧性。在原子层面上，界面上的位错运动是界面塑性的主要来源，这在金属多晶材料中的作用尤为重要。本文着重考虑孪晶界面上的位错，深入研究了位错运动的速度-应力关系与其超声速行为，这些结果有助于深入了解界面位错塑性的微观机理。 基于以上的考虑，本文的主要研究内容如下 ...
彭神佑
core
[Study on lightweight plasma recognition algorithm based on depth image perception]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhang H +7 more
europepmc +1 more source
[Research progress in biomechanics of different fixation methods for medial opening-wedge high tibial osteotomy]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiShao H +6 more
europepmc +1 more source
[Biomechanical analysis of a novel bridging plate for treating Rockwood III acromioclavicular joint dislocation]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoChen Y, Zhang G, Li S, Luo N, Zhang Y.
europepmc +1 more source
传统防屈曲支撑（BRB）小震下仅为结构提供刚度不提供阻尼，大震下易产生较大残余变形。为弥补BRB上述缺陷，本文提出一种新型双阶自复位防屈曲支撑（DY-SCBRB），小震下支撑提前屈服耗能，为结构提供附加阻尼，大震下支撑进一步耗能并为结构提供复位能力。通过对DY-SCBRB构造分析，得到支撑工作原理并建立支撑力-位移滞回关系恢复力模型，支撑双阶耗能特性和自复位能力得到有效验证；采用ABAQUS对DY-SCBRB进行静力加载，分析与验证新型支撑的滞回性能，找到支撑第一刚度比β1、第二刚度比β2 ...
刘吉胜 +4 more
core
[Development and evaluation of a positioning system for radiotherapy patient based on structured light surface imaging]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang Y +6 more
europepmc +1 more source
[Analysis of four brominated flame retardants in mineral water and instant-noodle-bowl samples by magnetic solid-phase extraction coupled with liquid chromatography using magnetic carbon aerogel as adsorbent]. [PDF]
Se PuNie QR, Ni M, Xu JY, Shi Y, Jiang HM.
europepmc +1 more source
[Research progress of suture augmentation in anterior cruciate ligament reconstruction]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLiu J +5 more
europepmc +1 more source