变速器与取力器连接螺栓断裂的原因及改进措施

针对变速器与取力器的连接螺栓出现断裂的情况,分析了原因,并提出了解决措施。     

工程断裂构造及其公路隧道工程效应

为了解决活断层工程效应,通过对断裂构造工程效应和工程处理全过程的综合分析,理论解析了断裂构造工程效应研究的前沿课题,并结合隧道工程实践,剖析了公路隧道活断层效应应用基础研究的方案,提出了断层错动自然影响带划分、断层错动围岩稳定性空间定量评价和活断层隧道工程对策研究等需要解决的关键问题。     

宁波329国道北仑至三山线公路工程区内断裂遥感研究

结合一个具体的工程项目，就遥感技术应用于公路工程地质勘察时的技术路线、技术方法进行了阐述，并重点介绍了工程区内断裂的研究结果，对工程的设计与施工提出了建议。     

The effect of plastic constraint on the initiation of ductile tears in shipbuilding structural steels

In this paper, the effect of plastic constraint on the initiation of ductile tears in four different shipbuilding structural steels has been experimentally studied by measuring the J-integral and crack opening displacement COD at initiation in three-point bend specimens with deep and shallow notches. Experimental results of seven groups of different strength alloy steels show that both Si and Ji values of ductile tear from the shallow crack specimens which have less constraint flow field are significantly higher than those of deeply notched specimens. Slip-line-field analysis shows that, for shallow crack, the hydrostatic stress is lower than that from standard deeply cracked bend specimen, which develops a high level of crack tip constraint, provides a lower bound estimate of toughness, and will ensure an unduly conservative approach when applied to structural defects, especially if initiation values of COD and J-integral are used.     

某轮主机活塞环异常断裂原因分析

此文结合活塞环的工作条件，对某轮主机气环异常断裂原因进行了分析，并针对该故障的诱发原因对柴油机日常维护管理提出了建议。