| 1. | Code of practice for fatigue design and assessment of steel structures
钢结构疲劳设计和评定实用规程 |
| 2. | The stress fields in locking hooks is changed periodically when the train is passing , so the fatigue design criteria are used to check the stress
本文研究了各个载荷工况下，锁闭钩中的最大等效应力与车辆作用载荷变化的关系。 |
| 3. | Whilst the anti - fatigue design of the chamber is one of the critical technologies whose basis is the research on the fatigue properties of the laminates
机匣的疲劳设计是其中的关键技术之一,而复合材料层合板的疲劳研究是机匣的疲劳设计的基础。 |
| 4. | Particularly there have n ' t rules on the fatigue in . < specification for design and construction of gird structure > ( jgj7 - 91 ) , so designers have n ' t references in fatigue design , the gird structure ' s application in the workshop is restricted seriously
尤其是《网架结构设计与施工规程》 ( jgj7 - 91 )无疲劳条文规定，设计人员无据可依，极大地制约了该网架结构在工业厂房中的推广应用。 |
| 5. | Finally , theoretical results and the fatigue test data of equal amplitude are combined , which is introduced the conception of " range of hotspot stress " , and the method of fatigue design for grid structure with bolt - sphere joints is obtained in this paper
最后，将本文的理论研究成果与常幅疲劳试验数据相结合，并引入“热点应力幅”的概念，建立了螺栓球节点网架结构的疲劳验算方法。 |
| 6. | The relations between the dummy stress amplitude and fatigue life can be easily developed . and then , the bhw - 35 steel fatigue design curve can be obtained according with asme criterion and bs5500 criterion . compared ~ vith the design curves provided by the asme and bs5500 criterion , the curve got in this paper provides reliable direction for the fatigue design of boiler drum , which used on the altering generating power plant set
将焊缝材料的虚拟应力幅与寿命关系，按照asme和bs5500规范的方法分析得到bhw ? 35钢疲劳设计曲线，并与asme和bs5500规范中的设计曲线进行比较，为我国调峰机组410t / h锅炉汽包疲劳设计提供可靠的实际依据。 |
| 7. | On the basis of finite element numerical simulation technology and s - n curve data base of welded joint , the course of fatigue test of physical prototype was simulated with computer and the fatigue life of welded structure was predicted , so as to let the development of anti - fatigue design becoming possible in the designing stage of product
基于有限元数值仿真技术及焊接接头s - n曲线数据库，在计算机中模拟物理样机的疲劳试验过程，预测焊接结构的疲劳寿命，使产品在设计阶段开展抗疲劳设计成为可能。 |
| 8. | The existence of original flaw leading to early destroying of structure could not be predicted by traditional fatigue designing method of steel structure of crane . so it was inevitable that the cranes that were designed according to this method had hidden dangers . many great steel - making plants were worrying about the serving cranes that were bought in the 70 ' s
由于起重机钢结构中初始裂纹的存在而导致的结构早期失效用传统的起重机钢结构疲劳设计方法是无法预测的，因此这种按传统方法设计出的起重机就难免会存在一些事故隐患，我国大型钢铁企业在七十年代购买并使用至今的大批起重机都有此顾虑。 |
| 9. | Firstly , the analyses on the dynamical response of the tsing ma bridge ( tmb ) under traffic loading are performed on the basis of the three dimensional finite element model of the full - scale structure of the bridge , and some regions critical to fatigue damage are determined from the result of the dynamical response . the hot spot stress approach is usually adopted in the fatigue design and analysis of tubular welded joints . to apply the hot spot stress approach for the fatigue evaluation of long - span suspension bridges , the fem is further used to determine the hot spot stress of the critical fatigue locations
首先，在青马大桥三维有限元模型和整体动力响应分析计算的基础上进一步进行关键疲劳构件的局部热点应力分析，对疲劳危险部位处的焊接构件建立三维有限元模型，施加符合桥梁实际工况的载荷与位移边界条件，进行局部热点应力分析，确定这些焊接构件内的名义应力和相邻焊接区域内热点应力之间的关系，得到相应的应力集中系数。 |
| 10. | The study on varied - amplitude fatigue behavior of large - span grid structure with hanging cranes is a blank field in the world . on the base of extensive investigation , from the viewpoint of loading , this paper widely discusses the development of fatigue loading spectrum in the fields of aviation , mechanism and civil engineering , listing the main technology standards of hanging crane and the engineering examples of partial grid structure with hanging crane in china , concluding the mechanic methods on tension - resistance fatigue design of bolt in china . america
设置悬挂吊车网架的变幅疲劳性能研究属于当前的一个前沿课题，本文从载荷的角度，通过广泛的调查和深入的研究，全面地论述了疲劳载荷谱在机械、航空、土木领域的进展情况，列出了国内部分已建或在建的设置悬挂吊车网架结构的工程实例和悬挂吊车主要的技术规格，详细归纳了中国、美国、德国、日本、前苏联的螺栓抗拉疲劳设计理论以及美国、德国钢结构协会关于高强螺栓抗拉疲劳设计的若干规定。 |
