Results 111 to 120 of about 2,496 (200)

Biomechanical analysis of three kinds of rigid internal fixation methods for condylar head fractures. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Sun J, Lan D, Wang D, Xu Y, Wang Z, Zhang C, Zhang K, Xu T.   +7 more
europepmc   +1 more source

输电塔钢管角钢组合节点承载能力模拟分析与计算方法研究

Jianzhu Gangjiegou Jinzhan
依托输电线路实际工程，选取输电铁塔主材与横担连接处钢管角钢组合节点为研究对象，采用数值软件ABAQUS建立了钢管角钢组合节点精细化有限元模型，基于静力加载试验验证了有限元模型的合理性；随后模拟分析了组合节点的传力机理和应力分布，明确了不同参数对组合节点受力特性的影响规律。结果表明，钢管、中环板与竖向板相交区域的应力集中且最大应力达到屈服强度，并向四周扩散且逐渐减小，中环板厚度和竖向板厚度是影响组合节点极限承载力的关键因素。基于有效宽度法计算了中环板和竖向板的承载能力，建立了不同板件内力占比计算公式 ...
张丽娟, 田雪凯, 刘俊才, 罗靖宇, 田利   +4 more
doaj  

[Biomechanical analysis of a novel bridging plate for treating Rockwood III acromioclavicular joint dislocation]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Chen Y, Zhang G, Li S, Luo N, Zhang Y.
europepmc   +1 more source

[A study on the predictive model of porous hyperelastic properties of human alveolar bone based on computed tomography imaging]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wu B, Li M, Yang F, Yuan L, Lu Y, Jiang D, Yi Y, Yan B.   +7 more
europepmc   +1 more source

[A method for determining spatial resolution of phantom based on automatic contour delineation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liu Y, Sun M, Zhang H, Liu H.
europepmc   +1 more source

钢桁架在冲击荷载作用下动态响应研究

Jianzhu Gangjiegou Jinzhan
圆钢管桁架在土木工程和海洋工程应用较多，除了承受竖向荷载还易遭受冲击偶然荷载。以偏心质量下钢桁架抵抗冲击荷载为研究对象，利用LS-DYNA软件建立了节点冲击有限元模型。从破坏特征、冲击响应和耗能能力等方面研究了其抗冲击能力，对冲击次数、冲击速度和钢材屈服强度进行了参数分析，最后基于有限元模拟结果，提出了主管凹陷变形与转角之间的表达式。结果表明：主管经过多次摆锤冲击后，发生严重的凹陷变形，刚度显著降低，冲击速度达到3 m⋅s-1时，冲击力峰值提高84.8%，冲击区域支管节点发生挤压弯曲破坏 ...
张纪刚, 时成龙, 闫清峰, 刘菲菲   +3 more
doaj  

Three-dimensional finite element feature analysis of the mandible and morphology and position of temporomandibular joint in patients with unilateral and bilateral molar scissor bite. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Chu T, Zhang X, Wang H, Ma H, Liu Y.
europepmc   +1 more source

冷弯不等肢复杂卷边角钢轴压试验及承载力设计方法

Jianzhu Gangjiegou Jinzhan
为研究冷弯薄壁不等肢复杂卷边角钢屈曲性能和稳定承载力设计方法，对24根不同截面、长细比、宽厚比的不等肢复杂卷边角钢进行了轴压试验。试验结果表明，长细比较大且宽厚比较小的试件易发生弯扭屈曲，长细比较小而宽厚比较大的试件易发生局部屈曲或弯扭和局部相关屈曲。采用ABAQUS有限元软件对试件进行了有限元模拟，屈曲模式和承载力与试验结果吻合良好，表明建立的有限元分析模型是可行的。因此可采用经验证的有限元模型对不同长细比、卷边形式和卷边比的轴心受压不等肢复杂卷边角钢进行了参数化分析。结果表明 ...
姚行友, 胡成立, 聂泽谕, 郭彦利   +3 more
doaj  

[Biomechanical effects of medial and lateral translation deviations of femoral components in unicompartmental knee arthroplasty on tibial prosthesis fixation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xu J, Zhang J, Zhang B, Cui W, Zhang W, Chen Z.   +5 more
europepmc   +1 more source

[Finite element analysis of impact of bone mass and volume in low-density zone beneath tibial plateau on cartilage and meniscus in knee joint]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Han L, Hou W, Lu S, Zeng Z, Lin K, Han M, Luo G, Tian L, Yang F, He M, Wei Q.   +10 more
europepmc   +1 more source