One group of experimenters has attempted to relate the extent of hyper-velocity damage to the mechanical properties of the impacted target; another group has stressed the hydrodynamic model of cratering.doi:10.1038/2071182a0ROBERT F. ROLSTENNature Publishing Group UKNature
Name and describe the four basic models that describe how a solid response to applied stress. Determine the resulting stress equations for \phix, \phiy and \phixy given the Airy's stress function \phi = a1x^4 + a2(x^3)y + a3(x^2)(y^2) + a4x(y^3) + a5(y^4)...
therefore, highσ2increases the time to failure of rock samples. Based on the scientific understanding of the characteristics of small deformation and time to failure of Beishan granite, a 3D Nonlinear Creep Model of Beishan Granite under true triaxial stress is proposed. The model can reflect the...
In the context of fracture mechanics, Andrews27 showed, in his theoretical study of an infinite inelastic lamina containing a crack, that the inelastic deformation has a significant role in the total energy change due to crack propagation. Early studies attempted to extend the analytical formula of...
aAlternative standards recognize that the true severity of a flaw is dependent on material toughness and applied stress levels,and can only be determined using fracture mechanics principles. 供选择的标准认为缺点的真实的严肃依靠物质韧性和应用的压力水平,并且可能只是坚定的使用破裂机械工原则。[translate]...
stress ratio from 0.2 : 0.2 to 0.2 : 0.6, and the strength increase slows down or even slightly decreases when the stress ratio increases from 0.2 : 0.6 to 0.2 : 0.8 (after 120 days of attack); (3) at the same stress ratio, the triaxial compressive strength ...
Stress fracture of the right distal femur following bilateral fractures of the proximal fibulas. Am J Sports Med 1992;20:771-4.Yasuda T, Miyazaki K, Tada K, et al. Stress fracture of the right distal femur following bilateral fractures of the proximal fibulas: a case report. Am J Sports...
Engineering Fracture MechanicsPardoen T,Marchal Y,Delannay F.Essential work of fracture compared to fracture mechanics-towards a thickness independent plane stress toughness. Engineering Fracture Mechanics . 2002Essential work of fracture compared to fracture mechanics—towards a thickness independent plane ...
Obesity and stress are confirmed risk factors for CHD. Is the statement true or false? True or false? Malnutrition is more severe than under-nutrition. State whether the following statement is true or false: An intense fear of gaining ...
These formulae give us the stress and strain in a prismatic beam when it is subjected to pure bending . 当棱柱形梁受纯弯曲时,这些公式给出了它的主力和主变。 5. 34kb This paper deals with the interaction of local and overall buckling in thin-walled steel I-beams under pure bending. ...