·Cerchar abrasivity tests rock strength and mineral content tests and digital drilling tests were carried out on different types of rock samples According to the force characteristics of a diamond bit during rock grinding and drilling and the principles of mechanical balance and energy conservation the rock drilling energy index namely the
·The dynamics of deformation is the study of stresses acting within a rock body as well as on its boundaries In fact it is the stresses that ultimately deform a rock which in turn assumes a particular geometry or shape Dynamic analysis is aimed at understanding the orientations and relative magnitudes of the stresses that have deformed the rock
·Rocks become deformed when the Earth s crust is compressed or stretched The forces needed to do this act over millions of years deformation is a very slow process What is the force that changes rock shape or volume stress A force that acts on rock to change its shape or volume the amount of space a rock takes up is stress
The third stage of a rocket is injected by its booster with a velocity u of 15 000 km/h at A into an unpowered coasting flight to B At B its rocket motor is ignited when the trajectory makes an angle of 20 ∘ ^{circ} ∘ with the horizontal Operation is effectively above the atmosphere and the gravitational acceleration during this interval may be taken as 9 m / s 2 m/s^{2} m / s 2
·The amount of force per unit area acting on a rock is defined as pressure It is calculated by dividing the force acting on the rock by the area over which the force is applied
force that deforms rocks when stresses acting on a rock exceed its strength the rock will deform by flowing folding fracturing or faulting/ maginiture of stress is a function of the amount of force applied to a given area confining pressure stress applied uniformly in all directions
·The higher the forces that are acting on the meat while grinding the stronger the disintegration of the meat cells after the process These forces can be calculated as energy transfer in meat grinders using specific mechanical energy SME The amount of non intact cells ANIC can be used to describe the extent of disintegrated cells
Study with Quizlet and memorize flashcards containing terms like What tends to put stationary objects in motion or change the motion of moving bodies is the amount of force acting upon a body of rock to change its shape and/or volume Deformed rocks that have folded and flowed and remain deformed even after the stress is removed are said to have undergone
The angle of internal friction for rock has a typical values 30^circ but ranges from 20 45^circ The cohesion term sets the minimum values of the shear fracture strength which occurs when the normal stress is zero Cohesion for rock is typically about MPa for silts or clays but 10 MPa for other rocks
·Grinding is a manufacturing process which significantly contributes in producing high precision and durable components required in numerous applications such as aerospace defence and automobiles
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