Definition and Classification of Stress

Definition and Classification of Strain

Definition and classification of elastic modulus

Basic laws such as Hooke's law, elasticity law, Poisson's ratio, etc.

Application of basic laws of mechanics of materials

Deformation of material during stretching

Generation and distribution of tensile force

Energy conversion during stretching

mechanical stretching

Hydraulic stretching

heat stretching

Stretch forming

Stretching test

Stretching

Deformation of materials during compression

Generation and distribution of compressive force

Energy conversion during compression

mechanical compression

hydraulic compression

thermocompression

Compression molding

Compression test

Compression processing;

Moment of inertia is a physical quantity that measures the ability of an object to resist rotation.

The moment of inertia is related to the mass, shape and distribution of the object

Moment of inertia has important applications in engineering and physics

The calculation formula is I=∫r^2dm, where r is the distance to the center of mass and dm is the differential mass.

For objects with complex shapes, the integral method needs to be used to calculate the moment of inertia.

The calculation of the moment of inertia is very important in determining the moment of inertia of an object

Moment of inertia is the physical quantity of an object's ability to resist rotation.

The moment of inertia is proportional to the moment of inertia, that is, J=Iω, where ω is the angular velocity

The calculation of the moment of inertia is very important for analyzing the rotational motion of an object

Static moment is a physical quantity that measures the moment of inertia of an object about an axis.

The static moment is related to the mass, shape and center of mass position of the object

The calculation formula for static moment is I = m * d^2

generation of shear force

shear deformation

Definition of shear stress

Calculation of shear stress

Distribution of shear stress

Basic principles of twisting

Application range of torsion

Type of twist

Torsional deformation characteristics

Torsional stress calculation

torsional stress concentration

torsional strength formula

torsional strength conditions

Torsional deformation characteristics

The law of torsional deformation

twist deformation formula

Torsional deformation calculation method

Tensile internal force is the internal force generated when an object is subjected to a stretching force

Compression internal force is the internal force generated by an object when it is subjected to compression force

Shear internal force is the internal force generated by an object when it is subjected to shear force

The elastic modulus, Poisson's ratio and other properties of the material will affect the bending internal force

The shape and size of the cross-section will affect the bending internal force

The magnitude, direction and point of action of the force will affect the bending internal force

When designing a structure, it is necessary to consider the impact of bending internal forces on the structure

According to the requirements of bending internal force, select the appropriate material

By optimizing the structural design, the internal bending force is reduced and the stability and safety of the structure are improved;

Bending stress is the stress produced when an object is subjected to a bending force

Classification according to stress properties

Classification according to stress direction

Material properties

Geometry

Loading conditions

Bending stress formula, shear stress formula, etc.

Integral method, analytical method, etc.

Calculation of bending stress of typical structures such as beams, plates, and shells

Structural optimization, strength check, etc.

Fatigue damage, fracture damage, etc.

Structural safety factor, ultimate load-bearing capacity, etc.

Stress is the force within an object that resists deformation

The unit of stress is Pascal (Pa) or Megapascal (MPa)

Normal stress and shear stress

Normal stress and tangential stress

Unidirectional stress and multidirectional stress

The purpose of stress state analysis

Methods of stress state analysis

Strength theory is the theory that studies the ability of materials to resist damage

Elasticity theory, plasticity theory and fracture theory

Application of strength theory in engineering design

Application of strength theory in materials research