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《中国科学院院刊(英文版)》2012,26(4):284-285
August 2012 is an unforgettable month for Prof. Timothy J. Pedley from Cambridge University: a few days after his nation had successfully hosted the Olympic Games in London, he and more than 1,500 mech... 相似文献
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蒋琦娟 《江苏广播电视大学学报》2003,14(6):63-64
《应用力学》是机电类专业的一门专业基础课。在教学中应根据其理论性强和技术应用性强的特点,创新教学理念,实现由知识传授向能力培养的转变,提高学生解决工程实际问题的能力;正确处理好理论知识与实践环节、间接经验与直接经验的关系,精选教学内容;针对“理论易懂,题目难解”的难点,采取突出重点、运用计算机辅助教学和提高学生自学能力等教学策略进行教学。 相似文献
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An adaptive mesh finite element model has been developed to predict the crack propagation direction as well as to calculate the stress intensity factors (SIFs), under linear-elastic assumption for mixed mode loading application. The finite element mesh is generated using the advancing front method. In order to suit the requirements of the fracture analysis, the generation of the background mesh and the construction of singular elements have been added to the developed program. The adaptive remeshing process is carried out based on the posteriori stress error norm scheme to obtain an optimal mesh. Previous works of the authors have proposed techniques for adaptive mesh generation of 2D cracked models. Facilitated by the singular elements, the displacement extrapolation technique is employed to calculate the SIK The fracture is modeled by the splitting node approach and the trajectory follows the successive linear extensions of each crack increment. The SlFs values for two different case studies were estimated and validated by direct comparisons with other researchers work. 相似文献
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