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PROBLEM -2 An Inertia J of radius r attached to a fixed axis of rotation A as shown below. The inertia is in contac...
Modelling of mechanical dynamic systems Exercice 1 An disc of an inertia J and radius r...
Modelling of mechanical dynamic systems Exercice 1 An disc of an inertia J and radius r is attached to a fixed axis of rotation A as shown below. The disc is in contact with a mass M attached via a spring of stiffness K to a fixed wall. The inertia-mass contact is subject to viscous friction of coefficientſ. The motion of the mass with respect to the horizontal floor is subject to the same viscous friction coefficient f.. The system...
Q 1- 08 Pts) Figure below is a diagram of a DC motor connected in parnllel to a current source i,...
Q 1- 08 Pts) Figure below is a diagram of a DC motor connected in parnllel to a current source i,. The torque and back-EMF constants of the motor are Ko K respectively, the motor resistance is R, also modeled as connected in parallel, the motor inertia is 1- (not shown), and the motor inductance is negligible. The motor load is an inertia J with compliance (stiffness) K and viscous friction coefficient b, and it is attached a gear pair...
The simplified diagram of a DC motor is shown in Fig. 4. Assume that the rotor has inertia m J an...
The simplified diagram of a DC motor is shown in Fig. 4. Assume
that the rotor has inertia m J and viscous friction coefficient Bm.
The torque developed by the motor is assumed to be related linearly
to the field current by , m m f T K i where the motor torque
constant m f a K K K I 1 when the armature current a i is assumed
constant (i.e. ) a a i I...
Wheel and shaft A wheel is attached to a fixed shaft of radius R, and the...
Wheel and shaft A wheel is attached to a fixed shaft of radius R, and the system is free to rotate without friction. A tape of negligible mass wrapped around the shaft is pulled with a known constant force F. Initially the wheel is at rest. Adieu a length L of tape has unwound, the system is rotating with angular speed omega_0. Find the moment of inertia I_0 of the system.
e susJrom rest at the top of the well and falls for before hitting the water, how far does it fall? Moment of inertia of cylinder 1-% MR 2. A ladder is leant against the wall. The coefficient of...
e susJrom rest at the top of the well and falls for before hitting the water, how far does it fall? Moment of inertia of cylinder 1-% MR 2. A ladder is leant against the wall. The coefficient of the static friction p. between the ladder and the wall is 0.3 and the coefficient of the static friction g, between the ladder and the floor is 0.4. The center of mass of the ladder is in the middle of it...
44. The system shown in Fig. P7 consists of a slider block of mass m2 and a uniform slender rod of mass m3, length 13, and mass moment of inertia about its center of mass J The slider block is connec...
44. The system shown in Fig. P7 consists of a slider block of mass m2 and a uniform slender rod of mass m3, length 13, and mass moment of inertia about its center of mass J The slider block is connected to the ground by a spring that has a stiffness coefficient k. The slider block is subjected to the force F(t), while the rod is subjected to the moment M. Obtain the differential equations of motion of this two-degree-of-freedom...
63 Figure P6.3 shows a mass-damper system (no stiffness, Problem 2.3). Displacement x is measured...
63 Figure P6.3 shows a mass-damper system (no stiffness, Problem 2.3). Displacement x is measured from an equilibrium position where the damper is at the "neutral" position. The external force () is a short-duration pulse function: f(!)-5N for 0SS002 s, and f,() = 0 for t > 0.02 s. The system parameters are mass m-0.5kg and viscous friction coefficient b 3 N-s/m and the system is initially at rest. Usc Simulink to determine the system response and plot displacement xit)...
01- (08 Pts) Figure below is a diagram of a DC motor connected in parallel to...
01- (08 Pts) Figure below is a diagram of a DC motor connected in parallel to a current source is the torque and back-EMF constants of the motor are K. K respectively, the motor resistance is R, also modeled as connected in parallel, the motor inertia is I. (not shown), and the motor inductance is negligible. The motor load is an inertia compliance (stiffness) K and viscous friction coefficient b, and it is attached to the motor via a gear...
PROBLEM 1 (35 %) The mechanical system in the figure below consists of a disk of radius r, a block of mass m, a spr...
PROBLEM 1 (35 %) The mechanical system in the figure below consists of a disk of radius r, a block of mass m, a spring of stiffness (spring constant) k, and a damper with damping ratio b. The disk has moment of inertia Jabout its center of mass (pivot point O), and the block is subjected to an external force t) as shown in the figure. The spring is unstressed when x 0= 0. Assume small 0. (a) (10 points)...
6-B) A weight attached to a spring of stiffness 982 N/m has a viscous damping device....
6-B) A weight attached to a spring of stiffness 982 N/m has a viscous damping device. When the weight is displaced and released, the period of vibration is 1.02 s, and the magnitude of consecutive amplitudes is 0.61 m and 0.29 m. a) Identify the mass (m) and damping (c) coefficient. b) Determine the amplitude and phase of the response when a force, f(t) = 4.2 cos (6.31) N, acts on the system.
Modelling of mechanical dynamic systems Exercice 1 An disc of an inertia J and radius r is attached to a fixed axis of rotation A as shown below. The disc is in contact with a mass M attached via a spring of stiffness K to a fixed wall. The inertia-mass contact is subject to viscous friction of coefficientſ. The motion of the mass with respect to the horizontal floor is subject to the same viscous friction coefficient f.. The system...
Q 1- 08 Pts) Figure below is a diagram of a DC motor connected in parnllel to a current source i,. The torque and back-EMF constants of the motor are Ko K respectively, the motor resistance is R, also modeled as connected in parallel, the motor inertia is 1- (not shown), and the motor inductance is negligible. The motor load is an inertia J with compliance (stiffness) K and viscous friction coefficient b, and it is attached a gear pair...
The simplified diagram of a DC motor is shown in Fig. 4. Assume
that the rotor has inertia m J and viscous friction coefficient Bm.
The torque developed by the motor is assumed to be related linearly
to the field current by , m m f T K i where the motor torque
constant m f a K K K I 1 when the armature current a i is assumed
constant (i.e. ) a a i I...
Wheel and shaft A wheel is attached to a fixed shaft of radius R, and the system is free to rotate without friction. A tape of negligible mass wrapped around the shaft is pulled with a known constant force F. Initially the wheel is at rest. Adieu a length L of tape has unwound, the system is rotating with angular speed omega_0. Find the moment of inertia I_0 of the system.
e susJrom rest at the top of the well and falls for before hitting the water, how far does it fall? Moment of inertia of cylinder 1-% MR 2. A ladder is leant against the wall. The coefficient of the static friction p. between the ladder and the wall is 0.3 and the coefficient of the static friction g, between the ladder and the floor is 0.4. The center of mass of the ladder is in the middle of it...
44. The system shown in Fig. P7 consists of a slider block of mass m2 and a uniform slender rod of mass m3, length 13, and mass moment of inertia about its center of mass J The slider block is connected to the ground by a spring that has a stiffness coefficient k. The slider block is subjected to the force F(t), while the rod is subjected to the moment M. Obtain the differential equations of motion of this two-degree-of-freedom...
63 Figure P6.3 shows a mass-damper system (no stiffness, Problem 2.3). Displacement x is measured from an equilibrium position where the damper is at the "neutral" position. The external force () is a short-duration pulse function: f(!)-5N for 0SS002 s, and f,() = 0 for t > 0.02 s. The system parameters are mass m-0.5kg and viscous friction coefficient b 3 N-s/m and the system is initially at rest. Usc Simulink to determine the system response and plot displacement xit)...
01- (08 Pts) Figure below is a diagram of a DC motor connected in parallel to a current source is the torque and back-EMF constants of the motor are K. K respectively, the motor resistance is R, also modeled as connected in parallel, the motor inertia is I. (not shown), and the motor inductance is negligible. The motor load is an inertia compliance (stiffness) K and viscous friction coefficient b, and it is attached to the motor via a gear...
PROBLEM 1 (35 %) The mechanical system in the figure below consists of a disk of radius r, a block of mass m, a spring of stiffness (spring constant) k, and a damper with damping ratio b. The disk has moment of inertia Jabout its center of mass (pivot point O), and the block is subjected to an external force t) as shown in the figure. The spring is unstressed when x 0= 0. Assume small 0. (a) (10 points)...
6-B) A weight attached to a spring of stiffness 982 N/m has a viscous damping device. When the weight is displaced and released, the period of vibration is 1.02 s, and the magnitude of consecutive amplitudes is 0.61 m and 0.29 m. a) Identify the mass (m) and damping (c) coefficient. b) Determine the amplitude and phase of the response when a force, f(t) = 4.2 cos (6.31) N, acts on the system.
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