Beef water injection blockchain
No
Shandong provincial hospital
No.324, Jingwu Road, Huaiyin District, Jinan City
Eastern Hospital of Shandong provincial hospital
no.9677, Jingshi Road, Lixia District, Jinan City
Calculation method
using the formula of uniformly distributed load to calculate bending moment, it can be simply considered that M = (Q * x ^ 2) / 2, X is the length of uniformly distributed load
its origin is: Q * x is the resultant force F acting on the structure, the unit is n, the action point of resultant force is located at the midpoint of load action, so the arm of force of F is x / 2m, so the bending moment M = (Q * x ^ 2) / 2
when the bending moment is calculated, the corresponding deformation can be calculated< br />
The load q is the force divided by the area under force< br />
The load q is the force divided by the area under force
The uniformly distributed load, denoted by the small letter Q, is the force uniformly distributed on the structure (i.e. the load). Under the action of the uniformly distributed load, the load on each point is equal The unit of uniform load is n / m. In some cases, the pressure is also calculated as a uniform load. For example, the pressure on the object and the gravity on the fixed beam are uniformly distributed loadsusing the formula of uniformly distributed load to calculate bending moment, it can be simply considered that M = (Q * x ^ 2) / 2, X is the length of uniformly distributed load. Its origin is: Q * x is the resultant force F acting on the structure, the unit is n, the action point of resultant force is located at the midpoint of load action, so the arm of force of F is x / 2m, so the bending moment M = (Q * x ^ 2) / 2
extended data:
basic value of load:
standard value of load the basic representative value of load used in structural design is the standard load listed in the load code. The concept of standard load generally refers to the maximum load value of structure or component under normal service conditions, so it should be higher than the frequently occurring load value
from the statistical point of view, the standard value of load is the load value whose exceeding probability is less than a specified value within the specified design reference period, also known as characteristic value, which is the maximum value acceptable for engineering design
in some cases, a load can have two standard values: upper limit and lower limit. When the load rection has more dangerous effect on the structure, the lower limit value should be taken as the standard value; On the contrary, when the increase of load makes the structure more dangerous, the upper limit value is taken as the standard value
When there is enough observation data, it should be statistically determined according to the definition of the above standard value; When there is not enough observation data, the standard value of load can be determined according to the above concept agreement in combination with design experience1. The force fdxdy on the uniformly distributed load F and DXDY is constant, and the torque generated is xfdxdy (x-axis direction type). It can be solved by using double integral proct for xfdxdy along the force area. If it is circular r-Radial type
Themoment is rrdrda, which can be solved by double integral proct along the stressed area. For the force and moment distributed on the load triangle, the direction of the moment and the boundary equation of the load surface should be determined
The uniform load can be regarded as a concentrated force. The size of the concentrated force is the area of the uniform load (Q · L), which acts on the midpoint of the distribution area (L / 2)using the formula of uniformly distributed load to calculate bending moment, it can be simply considered that M = (Q * x ^ 2) / 2, X is the length of uniformly distributed load. Its origin is: Q * x is the resultant force F acting on the structure, the unit is n, the action point of resultant force is located at the midpoint of load action, so the arm of force of F is x / 2m, so the bending moment M = (Q * x ^ 2) / 2
In physics, torque refers to the tendency that the force makes the object rotate around the axis of rotation or fulcrum. The unit of moment is Newton meter. The Greek letter is tau The concept of moment originated from Archimedes' research on lever. Rotational torque is also called torque or torque. Torque can change the rotational motion of an object. Pushing or pulling involves forces, while torsion involves moments. The moment is equal to the cross proct of the radial vector and the applied force
Properties of moment:
1. The moment of force F to point O is not only determined by the force, but also related to the position of moment center. The moment varies with the position of the moment center
When the force is zero or the arm of force is zero, the moment is zero When the force moves along its action line, because the magnitude, direction and arm of the force do not change, the moment does not change The algebraic sum of the moments of two mutually balanced forces at the same point is equal to zeroe to the direct or indirect action on the structure, internal forces (such as axial force, bending moment, shear force, torque, etc.) and deformation (such as corner, crack, etc.) are generated in the structure, which is called "structural effect", that is, the action
The self inctance of DC torque motor is very small, so the response is very good; The output torque is directly proportional to the input current and has nothing to do with the speed and position of the rotorit can directly connect with the load and run at low speed without gear deceleration when the rotor is nearly locked, so it can proce a high torque to inertia ratio on the load shaft and eliminate the system error caused by the use of the rection gear