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高强钢低匹配静载等承载对接接头优化设计 被引量:1
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作者 赵智力 杨建国 +1 位作者 方洪渊 伍芳斌 《焊接学报》 EI CAS CSCD 北大核心 2009年第6期103-106,共4页
按照理论匹配比设计的接头通常存在强度富裕,根据对接接头硬度测试结果,对比对接接头实际匹配比与应力集中因子分布,能够确定接头的最小实际匹配比.按照焊根处应力集中因子与最小实际匹配比相等的原则,对按照屈服强度匹配比设计的高强... 按照理论匹配比设计的接头通常存在强度富裕,根据对接接头硬度测试结果,对比对接接头实际匹配比与应力集中因子分布,能够确定接头的最小实际匹配比.按照焊根处应力集中因子与最小实际匹配比相等的原则,对按照屈服强度匹配比设计的高强钢低匹配等承载对接接头按照抗拉强度匹配比进行了静载条件下几何参数的二次优化设计,接头几何尺寸显著减小,该接头设计方法考虑了冶金强化作用,避免了不必要的浪费. 展开更多
关键词 低匹配接头 等承载能力 冶金强化 强度富裕 接头几何优化
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A weighted network evolving model with capacity constraints
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作者 WU XiaoHuan ZHU JinFu +1 位作者 WU WeiWei GE Wei 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第9期1619-1626,共8页
Most of existing works on complex network assumed that the nodes and edges were uncapacitated during the evolving process,and displayed "rich club" phenomenon.Here we will show that the "rich club"... Most of existing works on complex network assumed that the nodes and edges were uncapacitated during the evolving process,and displayed "rich club" phenomenon.Here we will show that the "rich club" could be changed to "common rich" if we consider the node capacity.In this paper,we define the node and edge attractive index with node capacity,and propose a new evolving model on the base of BBV model,with evolving simulations of the networks.In the new model,an entering node is linked with an existing node according to the preferential attachment mechanism defined with the attractive index of the existing node.We give the theoretical approximation and simulation solutions.If node capacity is finite,the rich node may not be richer further when the node strength approaches or gets to the node capacity.This is confirmed by analyzing the passenger traffic and routes of Chinese main airports.Due to node strength being function of time t,we can use the theoretical approximation solution to forecast how node strength changes and the time when node strength reaches its maximum value. 展开更多
关键词 complex network EVOLVING weighted network capacity constraints SIMULATION
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