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Temperature and stress fields of multi-track laser cladding ZHAO Hong-yun (赵洪运), ZHANG Hong-tao(张洪涛), XU Chun-hua(徐春华), YANG Xian-qun(杨贤群) School of Materials Science and Engineering... on the temperature fields and stress fields of multi-track laser cladding were carried out by using the ANSYS software. The results show that, in the multi-track cladding process, the temperature field ellipse......
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integrating with Fourier transform methods of spectral analysis. When the stochastic stress waves transmit through rocks, the frequency and energy ratio of harmonic components were calculated... the duration time or by increasing the amplitude of stress wave, ratio of the energy of elastic waves transmitting through rock to the whole stress energy (i.e. energy dissipation ratio......
; with increasing axial stress, the ratio of ωw/ωq initially increases rapidly, then increases gradually, and ultimately decreases rapidly. Figure 12 Effects of axial static stress on ωw/ωq... skeleton has a persistent effect on the response frequency of rock throughout the axial loading process. For any given static stress, a larger parameter E2 results in a larger ratio of ωw/ωq. Similarly......
; (3) where α is the ratio of the axial stress to the circumferential stress during the final.... Assuming that the stress ratio is α=1.0 and d/D′ is 0.8, the curves of the critical axial strains versus η for different n values are shown in Fig.9. It can be seen that the absolute value......
J. Cent. South Univ. Technol. (2008) 15(s1): 475-478 DOI: 10.1007/s11771-008-403-2 Experimental study on rheological deformation and stress properties of limestone TANG Ming-ming (唐明明), WANG Zhi... uniaxial compression test and the creep deformations of the typical limestones from the surrounding rock of the highway tunnels were made. The relationship between the axial stress and the delayed......
. The influences of the borehole diameter (d), the initial stresses and the ratio of the initial principle stresses on the variations of the remained stress and the released stress in function... and the Poisson ratio of the rock mass on the stress relief curves were studied. The results show that the stress relief behavior formulated with the non-dimensional ratio of the released stress and the ratio......
J. Cent. South Univ. Technol. (2007)01-0115-05 DOI: 10.1007/s11771-007-0023-2 Experimental study on prediction model for maximum rebound ratio LEI Wei-dong(雷卫东)1, TENG Jun(滕 军)1, A.HEFNY2, ZHAO..., Singapore) Abstract: The proposed prediction model for estimating the maximum rebound ratio was applied to a field explosion test, Mandai test in Singapore. The estimated possible maximum peak particle......
of the stress seemed to be higher in the intersection of two ribs. It was also seen that the stress reduction ratio was higher when the structure was under bending compared to torsion and axial...Stress analysis of clamped-free grid composite cylindrical shell under various end loadingsARASHMEHR JAFAR, RAHIMI GHOLAMHOSSEIN, RASOULI FAZEL(Mechanical Engineering Department, Tarbiat Modares......
, which were the stress paths of constant stress ratio and the complex stress paths with transitional features. Motivated by the effect of stress path, the Gudehus-Bauer hypoplastic model was improved... be approximated as that the stress ratio keeps constant (q/p is constant, where deviatoric stress q=(σ1-σ3) and mean principal stress p=(σ1+2σ3)/3), and it will become a transitional stress path (dq/dp......
