We simulate the tapping of a bed of hard disks in a rectangular box by using a pseudodynamic algorithm. In these simulations, arches are unambiguously defined and we can analyze their properties as a function of the tapping amplitude. We find that an order-disorder transition occurs within a narrow range of tapping amplitudes as has been seen by others. Arches are always present in the system a...

Compared with single or twin tunnels, the pressure arch effect of deeply buried, symmetrically distributed triple tunnels are more complex and less studied. In this paper, arching responses in-situ measured in Badaling Great Wall station. Numerical research is subsequently conducted to investigate formation development tunnels. Then, influencing law buried depth on behavior systematically Based...

in this study, the mechanical behavior of vanyar dam was evaluated at the end of construction. a two-dimensional numerical analysis was conducted based on a finite element method on the largest cross-section of the dam. the data recorded by the instruments located in the largest cross-section were compared with the results of the numerical analysis at the place of instruments. the settlement, p...

The various criteria used for graduating the thickness of violin plates are discussed. These are shown apparently to be conflicting. A case is made that the flexural stiffness of the plates should be given priority. A simple indirect method is given for finding the flexural stiffness of the plates without the need to flex them in the hands or to apply forces and measure deflections. The method ...

BACKGROUND It has been proposed that gains would be made in the validity of the psychiatric classification system if many of the present 'neurotic' or personality disorders were subsumed into two over-arching groups, externalising and emotional disorders. If diagnostic sub-categories from the first digit coding structures within ICD-10 do, in fact, share clinical phenomenology that align with t...

Induced trench method is a well-known technique usually used to reduce the soil pressure applied on buried pipes. This involves use of lightweight compressible material above pipe increase positive arching, and thus, decrease pipe. However, little efforts have been given by previous studies check applicability using tire-derived aggregate (TDA) as light weight in induced method, where it not cl...