Supported by National Key R&D Program of China(Grant No.2017YFB1302603);National Natural Science Foundation of China(Grant No.51905550);National Basic Research Program of China(Grant No.2013CB035401);China Postdoctoral Science Foundation(Grant No.2019M652795)
The cutterhead of a full-face rock tunnel boring machine(TBM)is constantly subjected to varying impact and dynamic loads during tunneling processes,resulting in relatively large vibrations that could easily lead to fa...
The paper analyzes John Presper Eckert and John William Mauchly's endeavours to design, sell, and build the revolutionary new technology of the first-large and commercial computers. It discusses how Eckert and Mauchl...