Jianzhu Gangjiegou Jinzhan文中提出了一种新的模块化钢框架模块间全螺栓拼接方法，通过模块间连接键、单向螺栓与对穿螺栓的协同作用实现了模块间全螺栓装配。为研究该拼接节点的力学性能，采用ABAQUS有限元软件建立了模块化钢框架模块间全螺栓拼接节点精细化数值模型，并对其进行了低周往复加载数值模拟，分析了该节点的滞回曲线、骨架曲线、延性、耗能及承载力性能；还建立了节点初始转动刚度计算模型，推导了节点初始转动刚度计算公式，并与数值模拟计算结果进行了对比验证，验证了初始转动刚度计算公式的准确性。结果表明：该全螺栓拼接节点的构造设计合理 ...
王杰, 王燕, 安琦
doaj
[Collaborative motion control method for dual-arm surgical robots based on hybrid multi-stage optimization]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLin B, Li K.
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, 1986 利用给定温度下等时蠕变曲线的几何相似性及比应力-应变曲线法,将蠕变屈曲化为弹塑性屈曲。导出了大挠度情况下加筋圆柱壳一般性的平衡方程、屈曲方程以及相应的变分解法。提出了纯弯下加筋圆柱壳屈曲的简化处理办法。考虑了分叉屈曲和极值屈曲。计算了不同半径-厚度比及不同加筋情况的壳体临界弯矩 ...
李国琛, 李芳忠
core
[Research progress on predictive models of portal vein thrombosis in liver cirrhosis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiWu ZN +5 more
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, 1980 本文应用向量分析的方法,推导出非正交曲线坐标系的梯度、散度和旋度的计算公式,从而得到了无粘性流体在叶轮机械中稳定相对运动的三维流动的气动热力学基本方程。然后,讨论了用任意非正交曲线坐标表示的势函数方程,以及两类相对流面(S_1和S_2流面)的流函数方程(吴仲华方程)。最后也给出了速度梯度法(或称流线曲率法 ...
陈乃兴
core
[Application of musculoskeletal ultrasound combined with Wide-Awake technique in extensor indicis proprius tendon transfer for repairing extensor pollicis longus tendon rupture]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiYang X, Fan H, Su X, Fang X, Xu Y, He X.
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[Risk factors and development of a predictive model for myocardial injury in children with rotavirus-induced diarrhea]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiFeng LP +4 more
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Dianci bileiqi, 1991 本文是总文章的第五部分,叙述金属氧化物避雷器的保护性能。采用等值回路计算避雷器陡波响应特性,分析了在相对地过电压、相间过电压等操作过电压下的保护特性曲线及实际示波分析,以及雷过电压下的保护性能。指出 ...
doaj
[Non-invasive evaluation and prediction of portal hypertension: focusing on disease progression and outcome]. [PDF]
Zhonghua Gan Zang Bing Za ZhiXu PS, Wang MC, Chen JJ, Wang HY.
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[Analysis of portal vein thrombosis formation and risk factors after endoscopic treatment in patients with esophagogastric varices in liver cirrhosis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiCui YQ +9 more
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